Skip to main content
Top

2017 | OriginalPaper | Chapter

5. Imaging and Detection

Author : Gurinder Kaur Ahluwalia, Ph.D

Published in: Applications of Chalcogenides: S, Se, and Te

Publisher: Springer International Publishing

Activate our intelligent search to find suitable subject content or patents.

search-config
loading …

Abstract

Excellent X-ray detection properties and the unique nature of avalanche breakdown observed in amorphous selenium (a-Se) have enabled its use for several important applications such as in flat panel X-ray image (FPXI) detectors for medical and industrial applications and high resolution HARP (High gain Avalanche Rushing amorphous Photoconductor) TV pickup tubes. Stabilized amorphous selenium (doped and alloyed a-Se) meets the essential requirements for these applications and has been commercialized. Advances in photolithography and electronic microfabrication techniques have enabled the development of large area X-ray detectors with integrated readout mechanisms based on arrays of thin-film transistors. Unlike older, charged-coupled device (CCD)-based detectors that require optical coupling and image demagnification (discussed later), thin-film transistor-based, flat panel systems are constructed such that the pixel charge collection and readout electronics for each pixel are immediately adjacent to the site of the X-ray interactions. Digital detectors offer several advantages when compared to conventional analog detectors. FPXIs based on a-Se, operating at the ideal limit of high detective quantum efficiency (DQE) and are particularly suitable for mammography, chest radiology, angiography, fluoroscopy, and computed tomography. An all solid-state version of the HARP has been recently demonstrated with excellent avalanche gain which is expected to lead to novel imaging device applications that would be quantum noise limited. This chapter reviews the important characteristics of a-Se, its applications, and competing technologies for imaging and detection applications.

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 102.000 Bücher
  • über 537 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 67.000 Bücher
  • über 390 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Maschinenbau + Werkstoffe




 

Jetzt Wissensvorsprung sichern!

Literature
1.
go back to reference J.T. Dobbins, D.L. Ergun, L. Rutz, D.A. Hinshaw, H. Blume, D.C. Clark, DQE(f) of four generations of computed radiography acquisition devices. Med. Phys. 22, 1581–1593 (1995)CrossRef J.T. Dobbins, D.L. Ergun, L. Rutz, D.A. Hinshaw, H. Blume, D.C. Clark, DQE(f) of four generations of computed radiography acquisition devices. Med. Phys. 22, 1581–1593 (1995)CrossRef
2.
go back to reference P.C. Bunch, Performance characteristics of asymmetric zero-crossover screen-film systems. Proc. SPIE 1992, 46–65 (1653) P.C. Bunch, Performance characteristics of asymmetric zero-crossover screen-film systems. Proc. SPIE 1992, 46–65 (1653)
3.
go back to reference U. Neitzel, I. Maack, S. Gunther-Kohfahl, Image quality of a digital chest radiography system based on a selenium detector. Med. Phys. 21, 509–516 (1994)CrossRef U. Neitzel, I. Maack, S. Gunther-Kohfahl, Image quality of a digital chest radiography system based on a selenium detector. Med. Phys. 21, 509–516 (1994)CrossRef
4.
go back to reference E. Kotter, M. Langer, Digital radiography with large-area flat-panel detectors. Eur. Radiol. 12, 2562–2570 (2002)CrossRef E. Kotter, M. Langer, Digital radiography with large-area flat-panel detectors. Eur. Radiol. 12, 2562–2570 (2002)CrossRef
5.
go back to reference L. Lanca, A. Silva, Digital Radiography Detectors: A Technical Overview (Springer Science + Bussiness Media, New York, 2013). Ch 2, Digital Imaging Systems for plain radiography L. Lanca, A. Silva, Digital Radiography Detectors: A Technical Overview (Springer Science + Bussiness Media, New York, 2013). Ch 2, Digital Imaging Systems for plain radiography
6.
go back to reference G. Harrell, C. James, T. Dobbins, C.E. Ravin, Principles of digital radiography with large-area, electronically readable detectors: a review of the basics. Radiology 210, 595–599 (1999)CrossRef G. Harrell, C. James, T. Dobbins, C.E. Ravin, Principles of digital radiography with large-area, electronically readable detectors: a review of the basics. Radiology 210, 595–599 (1999)CrossRef
7.
go back to reference J.C. Dainty, R. Shaw, Medical Imaging. Image Science (Academic, London, 1974). ISBN 0-12 200850-2 J.C. Dainty, R. Shaw, Medical Imaging. Image Science (Academic, London, 1974). ISBN 0-12 200850-2
8.
go back to reference J.T. Dobbins III, Effect of under sampling on the proper interpretation of modulation transfer function, noise power spectra and noise equivalent quanta of digital imaging systems. Med. Phys. 22, 171–181 (1995)CrossRef J.T. Dobbins III, Effect of under sampling on the proper interpretation of modulation transfer function, noise power spectra and noise equivalent quanta of digital imaging systems. Med. Phys. 22, 171–181 (1995)CrossRef
9.
go back to reference M. Lundqvist, Silicon strip detectors for scanned multi-slit X-ray imaging, PhD Thesis, Kungl Tekniska Högskolan, Fysiska Institutionen, Stockholm, 2003. ISBN 91-7283-512-5, ISSN 0280-316X M. Lundqvist, Silicon strip detectors for scanned multi-slit X-ray imaging, PhD Thesis, Kungl Tekniska Högskolan, Fysiska Institutionen, Stockholm, 2003. ISBN 91-7283-512-5, ISSN 0280-316X
10.
go back to reference B. Mikulec, Single photon detection with semiconductor pixel arrays for medical imaging applications, PhD Thesis, University of Vienna, Austria, 2000. CERN-THESIS 2000-021 B. Mikulec, Single photon detection with semiconductor pixel arrays for medical imaging applications, PhD Thesis, University of Vienna, Austria, 2000. CERN-THESIS 2000-021
11.
go back to reference W.R. Hendee, E.R. Ritenour, Medical Imaging Physics, 4th edn. (Wiley, New York, 2002), pp. F1–F88. ISBN 0-471-38226-4CrossRef W.R. Hendee, E.R. Ritenour, Medical Imaging Physics, 4th edn. (Wiley, New York, 2002), pp. F1–F88. ISBN 0-471-38226-4CrossRef
12.
go back to reference J.T. Dobbins III, Determination of MTF, NPS and DQE in practice, in Lectures Notes: Physics of Medical X-ray Imaging, ed. by L.G. Mansson (European Commission, ERPET Course, Malmö, 1999), pp. 8–12 J.T. Dobbins III, Determination of MTF, NPS and DQE in practice, in Lectures Notes: Physics of Medical X-ray Imaging, ed. by L.G. Mansson (European Commission, ERPET Course, Malmö, 1999), pp. 8–12
13.
go back to reference J.P. Moy, Signal-to-noise ratio and spatial resolution in X-ray electronic imagers: is the MTF a relevant parameter? Med. Phys. 27, 86–93 (2000)CrossRef J.P. Moy, Signal-to-noise ratio and spatial resolution in X-ray electronic imagers: is the MTF a relevant parameter? Med. Phys. 27, 86–93 (2000)CrossRef
15.
go back to reference C. Floyd Jr., J.A. Baker, H.G. Chotas, D.M. Delong, C.E. Ravin, Selenium based digital radiography of the chest: radiologist’s preference compared with film screen radiographs. AJR 165, 1353–1358 (1995)CrossRef C. Floyd Jr., J.A. Baker, H.G. Chotas, D.M. Delong, C.E. Ravin, Selenium based digital radiography of the chest: radiologist’s preference compared with film screen radiographs. AJR 165, 1353–1358 (1995)CrossRef
16.
go back to reference P.K. Woodard, R.M. Stone, D.S. Gierada, G.G. Reiker, T.K. Pilgram, R.G. Jost, Chest radiography; depiction of normal anatomy and pathologic structures with selenium based digital radiography versus conventional screen-film radiography. Radiology 203, 197–201 (1997)CrossRef P.K. Woodard, R.M. Stone, D.S. Gierada, G.G. Reiker, T.K. Pilgram, R.G. Jost, Chest radiography; depiction of normal anatomy and pathologic structures with selenium based digital radiography versus conventional screen-film radiography. Radiology 203, 197–201 (1997)CrossRef
17.
go back to reference C.H. Slump, P.W. van Dijk, G. Laanstra et al., Real time diagnostic imaging with a novel X-ray detector with multiple screen CCD sensors. Proc. SPIE 3336, 418–429 (1999)CrossRef C.H. Slump, P.W. van Dijk, G. Laanstra et al., Real time diagnostic imaging with a novel X-ray detector with multiple screen CCD sensors. Proc. SPIE 3336, 418–429 (1999)CrossRef
18.
go back to reference H.G. Chotas, C. Floyd Jr., C.E. Ravin, Memory artifact related to selenium based digital radiography systems. Radiology 203, 881–883 (1997)CrossRef H.G. Chotas, C. Floyd Jr., C.E. Ravin, Memory artifact related to selenium based digital radiography systems. Radiology 203, 881–883 (1997)CrossRef
19.
go back to reference S.O. Kasap, V. Aiyah, X-ray induced hole trapping in electroradiographic plates. J. Appl. Phys. 69, 7087–7096 (1991)CrossRef S.O. Kasap, V. Aiyah, X-ray induced hole trapping in electroradiographic plates. J. Appl. Phys. 69, 7087–7096 (1991)CrossRef
20.
go back to reference W. Zhao, I. Blevis, S. Germann, J.A. Rowlands, D. Waetcher, Z. Huang, Digital radiology using active matrix readout of amorphous selenium; construction and evaluation of a prototype real time detector. Med. Phys. 24, 1834–1843 (1997)CrossRef W. Zhao, I. Blevis, S. Germann, J.A. Rowlands, D. Waetcher, Z. Huang, Digital radiology using active matrix readout of amorphous selenium; construction and evaluation of a prototype real time detector. Med. Phys. 24, 1834–1843 (1997)CrossRef
21.
go back to reference A. Tsukamoto, S. Yamada, T. Tomisaki et al., Development of a selenium based flat panel detector for real time radiography and fluoroscopy. Proc. SPIE 3336, 388–395 (1999)CrossRef A. Tsukamoto, S. Yamada, T. Tomisaki et al., Development of a selenium based flat panel detector for real time radiography and fluoroscopy. Proc. SPIE 3336, 388–395 (1999)CrossRef
22.
go back to reference H. von Seggern, T. Voigt, W. Knopfer, G. Lange, Physical model of photostimulated luminescence of X-ray irradiated BaFBr:Eu2+. J. Appl. Phys. 64, 1405–1412 (1998)CrossRef H. von Seggern, T. Voigt, W. Knopfer, G. Lange, Physical model of photostimulated luminescence of X-ray irradiated BaFBr:Eu2+. J. Appl. Phys. 64, 1405–1412 (1998)CrossRef
23.
go back to reference M.J. Yaffe, Digital mammography, in Handbook of Medical Imaging, ed. by J. Beuttel, H.L. Kundel, R.L. Van Metter (SPIE, Bellingham, 2000), pp. 329–372 M.J. Yaffe, Digital mammography, in Handbook of Medical Imaging, ed. by J. Beuttel, H.L. Kundel, R.L. Van Metter (SPIE, Bellingham, 2000), pp. 329–372
24.
go back to reference E. Samei, J.A. Selbert, C.E. Willis, M.J. Flynn, E. Mah, K.L. Junck, Performance evaluation of computed radiography systems. Med. Phys. 28, 361–371 (2000)CrossRef E. Samei, J.A. Selbert, C.E. Willis, M.J. Flynn, E. Mah, K.L. Junck, Performance evaluation of computed radiography systems. Med. Phys. 28, 361–371 (2000)CrossRef
25.
go back to reference G. Belev, S.O. Kasap, Amorphous selenium as an X-ray photoconductor. J. Non-Cryst. Solids 345–346, 484–488 (2004)CrossRef G. Belev, S.O. Kasap, Amorphous selenium as an X-ray photoconductor. J. Non-Cryst. Solids 345–346, 484–488 (2004)CrossRef
26.
go back to reference R.E. Johanson, S.O. Kasap, J.A. Rowlands, B. Polischuk, J. Non Cryst. Solids 227, 1359 (1988) R.E. Johanson, S.O. Kasap, J.A. Rowlands, B. Polischuk, J. Non Cryst. Solids 227, 1359 (1988)
27.
go back to reference S.O. Kasap, J.A. Rowlands, IEEE Proc. Circ. Dev. Syst. 149, 83 (2002) S.O. Kasap, J.A. Rowlands, IEEE Proc. Circ. Dev. Syst. 149, 83 (2002)
28.
go back to reference O. Tousignant, M. Choquette, Y. Demers, L. Laperriere, J. Leoeuf, M. Honda, M. Nishiki, A. Takahashi, A. Tsukamoto, SPIE Proc. 4682, 503 (2002)CrossRef O. Tousignant, M. Choquette, Y. Demers, L. Laperriere, J. Leoeuf, M. Honda, M. Nishiki, A. Takahashi, A. Tsukamoto, SPIE Proc. 4682, 503 (2002)CrossRef
29.
go back to reference G. Belev, K. Safa, J.A. Rowlands, D. Hunter, M. Yaffe, Dependence of the electrical properties of stabilized a-Se on the preparation conditions and the development of a double layer X-ray detector structure. Curr. Appl. Phys. 8, 383–387 (2008)CrossRef G. Belev, K. Safa, J.A. Rowlands, D. Hunter, M. Yaffe, Dependence of the electrical properties of stabilized a-Se on the preparation conditions and the development of a double layer X-ray detector structure. Curr. Appl. Phys. 8, 383–387 (2008)CrossRef
30.
go back to reference S. Kasap, J. Rowlands, K. Tanioka, A. Nathan, Applications of disordered semiconductors in modern electronics: selected examples, in Charge Transport in Disordered Solids, ed. by S. Baranovskii (Wiley, New York, 2006) S. Kasap, J. Rowlands, K. Tanioka, A. Nathan, Applications of disordered semiconductors in modern electronics: selected examples, in Charge Transport in Disordered Solids, ed. by S. Baranovskii (Wiley, New York, 2006)
31.
go back to reference S. Kasap, J.B. Frey, G. Belev, O. Tousignant, H. Mani, J. Greenspan, L. Laperriere, O. Bubon, A. Reznik, G. DeCrescenzo, K.S. Karim, J.A. Rowlands, Amorphous and polycrystalline photoconductors for direct conversion flat panel X-ray image sensors. Sensors 11, 5112–5157 (2011). doi:10.3390/s110505112 CrossRef S. Kasap, J.B. Frey, G. Belev, O. Tousignant, H. Mani, J. Greenspan, L. Laperriere, O. Bubon, A. Reznik, G. DeCrescenzo, K.S. Karim, J.A. Rowlands, Amorphous and polycrystalline photoconductors for direct conversion flat panel X-ray image sensors. Sensors 11, 5112–5157 (2011). doi:10.​3390/​s110505112 CrossRef
32.
go back to reference N. Destefano, M. Mulato, Influence of multi-depositions on the final properties of thermally evaporated TlBr films. Nucl. Instrum. Methods Phys. Res. A 624, 114–117 (2010)CrossRef N. Destefano, M. Mulato, Influence of multi-depositions on the final properties of thermally evaporated TlBr films. Nucl. Instrum. Methods Phys. Res. A 624, 114–117 (2010)CrossRef
33.
go back to reference P.R. Bennett, K.S. Shah, L.J. Cirignano, M.B. Klugerman, L.P. Moy, M.R. Squillante, Characterization of polycrystalline TlBr films for radiographic detectors. IEEE Trans. Nucl. Sci. 46, 689–693 (1999) P.R. Bennett, K.S. Shah, L.J. Cirignano, M.B. Klugerman, L.P. Moy, M.R. Squillante, Characterization of polycrystalline TlBr films for radiographic detectors. IEEE Trans. Nucl. Sci. 46, 689–693 (1999)
34.
go back to reference M. Yun, S. Cho, R. Lee, G. Jang, Y. Kim, W. Shin, S. Nam, Investigation of PbI2 film fabricated by a new sedimentation method as an X-ray conversion material. Jpn. J. Appl. Phys. 49, 041801–041805 (2010)CrossRef M. Yun, S. Cho, R. Lee, G. Jang, Y. Kim, W. Shin, S. Nam, Investigation of PbI2 film fabricated by a new sedimentation method as an X-ray conversion material. Jpn. J. Appl. Phys. 49, 041801–041805 (2010)CrossRef
35.
go back to reference K.S. Shah, R.A. Street, Y. Dmitriyev, P. Bennett, L. Cirignano, M. Klugermaa, M.R. Squillante, G. Entine, X-ray imaging with PbI2-based a-Si:H flat panel detectors. Nucl. Instrum. Methods Phys. Res. A 458, 140–147 (2001)CrossRef K.S. Shah, R.A. Street, Y. Dmitriyev, P. Bennett, L. Cirignano, M. Klugermaa, M.R. Squillante, G. Entine, X-ray imaging with PbI2-based a-Si:H flat panel detectors. Nucl. Instrum. Methods Phys. Res. A 458, 140–147 (2001)CrossRef
36.
go back to reference Q. Zhao, L.E. Antonuk, Y. El-Mohri, Y. Wang, H. Du, A. Sawant, Z. Su, J. Yamamoto, Performance evaluation of polycrystalline HgI2 photoconductors for radiation therapy imaging. Med. Phys. 37, 2738–2748 (2010)CrossRef Q. Zhao, L.E. Antonuk, Y. El-Mohri, Y. Wang, H. Du, A. Sawant, Z. Su, J. Yamamoto, Performance evaluation of polycrystalline HgI2 photoconductors for radiation therapy imaging. Med. Phys. 37, 2738–2748 (2010)CrossRef
37.
go back to reference H. Du, L.E. Antonuk, Y. El-Mohri, Q. Zhao, Z. Su, J. Yamamoto, Y. Wang, Investigation of the signal behavior at diagnostic energies of prototype, direct detection, active matrix, flat-panel imagers incorporating polycrystalline HgI2. Phys. Med. Biol. 53, 1325–135 (2010)CrossRef H. Du, L.E. Antonuk, Y. El-Mohri, Q. Zhao, Z. Su, J. Yamamoto, Y. Wang, Investigation of the signal behavior at diagnostic energies of prototype, direct detection, active matrix, flat-panel imagers incorporating polycrystalline HgI2. Phys. Med. Biol. 53, 1325–135 (2010)CrossRef
38.
go back to reference G. Zentai, L. Partain, R. Pavlyuchkova, Dark current and DQE improvements of mercuric iodide medical imagers. Proc. SPIE 2007, 6510, doi:10.1117/12.713848 G. Zentai, L. Partain, R. Pavlyuchkova, Dark current and DQE improvements of mercuric iodide medical imagers. Proc. SPIE 2007, 6510, doi:10.​1117/​12.​713848
39.
go back to reference K. Kim, S. Kang, J. Park, S. Cho, B. Cha, J. Shin, S. Nam, J. Kim, Quantitative evaluation of mercuric iodide thick film for X-ray imaging device. Proc. SPIE 2007, 6142, doi:10.1117/12.653002 K. Kim, S. Kang, J. Park, S. Cho, B. Cha, J. Shin, S. Nam, J. Kim, Quantitative evaluation of mercuric iodide thick film for X-ray imaging device. Proc. SPIE 2007, 6142, doi:10.1117/12.653002
40.
go back to reference A. Zuck, M. Schieber, O. Khakhan, Z. Burshtein, Near single-crystal electrical properties of polycrystalline HgI2 produced by physical vapor deposition. IEEE Trans. Nucl. Sci. 50, 991–997 (2003)CrossRef A. Zuck, M. Schieber, O. Khakhan, Z. Burshtein, Near single-crystal electrical properties of polycrystalline HgI2 produced by physical vapor deposition. IEEE Trans. Nucl. Sci. 50, 991–997 (2003)CrossRef
41.
go back to reference J.S. Iwanczyk, B.E. Patt, C.R. Tull, L.R. MacDonald, N. Skinner, E.J. Hoffman, L. Fornaro, HgI2 polycrystalline films for digital X-ray imagers. IEEE Trans. Nucl. Sci. 49, 160–164 (2002)CrossRef J.S. Iwanczyk, B.E. Patt, C.R. Tull, L.R. MacDonald, N. Skinner, E.J. Hoffman, L. Fornaro, HgI2 polycrystalline films for digital X-ray imagers. IEEE Trans. Nucl. Sci. 49, 160–164 (2002)CrossRef
42.
go back to reference R.A. Street, S.E. Ready, K. van Schuylenbergh, J. Ho, J.B. Boyec, P. Nylen, K. Shah, L. Melekhov, Comparison of PbI2 and HgI2 for direct detection active matrix X-ray image sensors. J. Appl. Phys. 91, 3345 (2002)CrossRef R.A. Street, S.E. Ready, K. van Schuylenbergh, J. Ho, J.B. Boyec, P. Nylen, K. Shah, L. Melekhov, Comparison of PbI2 and HgI2 for direct detection active matrix X-ray image sensors. J. Appl. Phys. 91, 3345 (2002)CrossRef
43.
go back to reference S. Tokuda, H. Kishihara, S. Adachi, T. Sato, Improvement of temporal response and output uniformity of polycrystalline CdZnTe films for high-sensitivity X-ray imaging. Proc. SPIE 5030, 861–870 (2003)CrossRef S. Tokuda, H. Kishihara, S. Adachi, T. Sato, Improvement of temporal response and output uniformity of polycrystalline CdZnTe films for high-sensitivity X-ray imaging. Proc. SPIE 5030, 861–870 (2003)CrossRef
44.
go back to reference S. Tokuda, H. Kishihara, S. Adachi, T. Sato, Preparation and characterization of polycrystalline CdZnTe films for large-area, high-sensitivity X-ray detectors. J. Mater. Sci. Mater. Electron. 5, 1–8 (2004)CrossRef S. Tokuda, H. Kishihara, S. Adachi, T. Sato, Preparation and characterization of polycrystalline CdZnTe films for large-area, high-sensitivity X-ray detectors. J. Mater. Sci. Mater. Electron. 5, 1–8 (2004)CrossRef
45.
go back to reference M. Simon, R.A. Ford, A.R. Franklin, S.P. Grabowski, B. Mensor, G. Much, A. Nascetti, M. Overdick, M.J. Powell, D.U. Wiechert, PbO as direct conversion X-ray detector material. Proc. SPIE 5368, 188–199 (2004)CrossRef M. Simon, R.A. Ford, A.R. Franklin, S.P. Grabowski, B. Mensor, G. Much, A. Nascetti, M. Overdick, M.J. Powell, D.U. Wiechert, PbO as direct conversion X-ray detector material. Proc. SPIE 5368, 188–199 (2004)CrossRef
46.
go back to reference M. Simon, R.A. Ford, A.R. Franklin, S.P. Grabowski, B. Mensor, G. Much, A. Nascetti, M. Overdick, M.J. Powell, D.U. Wiechert, Analysis of lead oxide (PbO) layers for direct conversion X-ray detection. IEEE Trans. Nucl. Sci. 52, 2035–2040 (2005)CrossRef M. Simon, R.A. Ford, A.R. Franklin, S.P. Grabowski, B. Mensor, G. Much, A. Nascetti, M. Overdick, M.J. Powell, D.U. Wiechert, Analysis of lead oxide (PbO) layers for direct conversion X-ray detection. IEEE Trans. Nucl. Sci. 52, 2035–2040 (2005)CrossRef
47.
go back to reference C.A. Klein, Bandgap dependence and related features of radiation ionization energies in semiconductors. J. Appl. Phys. 39, 2029–2038 (1968)CrossRef C.A. Klein, Bandgap dependence and related features of radiation ionization energies in semiconductors. J. Appl. Phys. 39, 2029–2038 (1968)CrossRef
48.
go back to reference R.C. Alig, S. Bloom, Electron-hole pair creation energies in semiconductors. Phys. Rev. Lett. 35, 1522–1525 (1975)CrossRef R.C. Alig, S. Bloom, Electron-hole pair creation energies in semiconductors. Phys. Rev. Lett. 35, 1522–1525 (1975)CrossRef
49.
go back to reference C. Haugen, S.O. Kasap, J.A. Rowlands, Charge transport and electron-hole creation energy in stabilized a-Se X-ray photoconductors. J. Phys. D Appl. Phys. 32, 200–207 (1999)CrossRef C. Haugen, S.O. Kasap, J.A. Rowlands, Charge transport and electron-hole creation energy in stabilized a-Se X-ray photoconductors. J. Phys. D Appl. Phys. 32, 200–207 (1999)CrossRef
50.
go back to reference S.O. Kasap, J.A. Rowlands, Direct-conversion flat-panel X-ray image detectors. IEEE Proc. Circ. Dev. Syst. 149, 85–96 (2002)CrossRef S.O. Kasap, J.A. Rowlands, Direct-conversion flat-panel X-ray image detectors. IEEE Proc. Circ. Dev. Syst. 149, 85–96 (2002)CrossRef
51.
go back to reference D. Tonchev, S.O. Kasap, Effect of ageing on glass transformation by temperature modulated DSC. Mater. Sci. Eng. A 328, 1–5 (2002)CrossRef D. Tonchev, S.O. Kasap, Effect of ageing on glass transformation by temperature modulated DSC. Mater. Sci. Eng. A 328, 1–5 (2002)CrossRef
52.
go back to reference B. Fogal, R.E. Johanson, G. Belev, S. Leary, S. Kasap, X-ray induced effects in stabilized a-Se X-ray photoconductors. J. Non-Cryst. Solids 299, 993–997 (2000) B. Fogal, R.E. Johanson, G. Belev, S. Leary, S. Kasap, X-ray induced effects in stabilized a-Se X-ray photoconductors. J. Non-Cryst. Solids 299, 993–997 (2000)
53.
go back to reference S.O. Kasap, C. Juhasz, Charge transport in selenium based amorphous xerographic photoreceptors. Photograph Sci. Eng. SPSE 26, 239–244 (1982) S.O. Kasap, C. Juhasz, Charge transport in selenium based amorphous xerographic photoreceptors. Photograph Sci. Eng. SPSE 26, 239–244 (1982)
54.
go back to reference W. Zhao, G. DeCrescenzo, S.O. Kasap, J.A. Rowlands, Ghosting caused by bulk charge trapping in direct conversion flat-panel detectors using amorphous selenium. Med. Phy. 32, 488–500 (2005)CrossRef W. Zhao, G. DeCrescenzo, S.O. Kasap, J.A. Rowlands, Ghosting caused by bulk charge trapping in direct conversion flat-panel detectors using amorphous selenium. Med. Phy. 32, 488–500 (2005)CrossRef
55.
go back to reference M.Z. Kabir, M. Yunus, S.O. Kasap, O. Tousignant, H. Mani, P. Gauthier, Sensitivity of stabilized a-Se based X-ray photoconductors. Curr. Appl. Phys. 6, 393–398 (2006)CrossRef M.Z. Kabir, M. Yunus, S.O. Kasap, O. Tousignant, H. Mani, P. Gauthier, Sensitivity of stabilized a-Se based X-ray photoconductors. Curr. Appl. Phys. 6, 393–398 (2006)CrossRef
56.
go back to reference M.H. Chowdhury, M.Z. Kabir, Electrical properties of grain boundaries in polycrystalline materials under intrinsic or low doping. J. Phys. D Appl. Phys. 44, 015102–015106 (2011)CrossRef M.H. Chowdhury, M.Z. Kabir, Electrical properties of grain boundaries in polycrystalline materials under intrinsic or low doping. J. Phys. D Appl. Phys. 44, 015102–015106 (2011)CrossRef
57.
go back to reference M. Schieber, A. Zuck, Advances in physical vapor deposited polycrystalline-HgI2 X-ray imaging detectors. J. Optoelectron. Adv. Mater. 5, 1299–1303 (2003) M. Schieber, A. Zuck, Advances in physical vapor deposited polycrystalline-HgI2 X-ray imaging detectors. J. Optoelectron. Adv. Mater. 5, 1299–1303 (2003)
58.
go back to reference S. Kasap, J.B. Frey, G. Belev, O. Tousignant, H. Mani, L. Laperriere, A. Reznik, J.A. Rowlands, Amorphous Selenium and its Alloys from early xerography to high resolution x-ray image detectors and ultrasensitive imaging tubes. Phys. Status Sol. B Basic Sol. State Phys. 246, 1794–1805 (2009). and references thereinCrossRef S. Kasap, J.B. Frey, G. Belev, O. Tousignant, H. Mani, L. Laperriere, A. Reznik, J.A. Rowlands, Amorphous Selenium and its Alloys from early xerography to high resolution x-ray image detectors and ultrasensitive imaging tubes. Phys. Status Sol. B Basic Sol. State Phys. 246, 1794–1805 (2009). and references thereinCrossRef
60.
go back to reference H.Z. Song, G.J. Adriaenssens, E.V. Emelianova, V.I. Arkhipov, Phys. Rev. B 59, 10607 (1999)CrossRef H.Z. Song, G.J. Adriaenssens, E.V. Emelianova, V.I. Arkhipov, Phys. Rev. B 59, 10607 (1999)CrossRef
61.
62.
go back to reference L. Benkhedir, M.S. Aida, G.J. Adriaenssens, J. Non-Cryst. Solids 344, 193 (2004)CrossRef L. Benkhedir, M.S. Aida, G.J. Adriaenssens, J. Non-Cryst. Solids 344, 193 (2004)CrossRef
63.
go back to reference L. Benkhedir, M. Brinza, G.J. Adriaenssens, J. Phys. Condens. Matter 16, S5253 (2004)CrossRef L. Benkhedir, M. Brinza, G.J. Adriaenssens, J. Phys. Condens. Matter 16, S5253 (2004)CrossRef
64.
go back to reference N. Qamhich, M.L. Benkhedir, M. Brinza, J. Willekens, G.J. Adriaenssens, J. Phys. Condens. Matter 16, 3827 (2004)CrossRef N. Qamhich, M.L. Benkhedir, M. Brinza, J. Willekens, G.J. Adriaenssens, J. Phys. Condens. Matter 16, 3827 (2004)CrossRef
65.
go back to reference K. Koughia, Z. Shakoor, S.O. Kasap, J.M. Marshall, J. Appl. Phys. 97, 33706 (2005)CrossRef K. Koughia, Z. Shakoor, S.O. Kasap, J.M. Marshall, J. Appl. Phys. 97, 33706 (2005)CrossRef
66.
go back to reference K.V. Koughia, B. Fogal, G. Belev, R.E. Johanson, S.O. Kasap, Density of states in the mobility gap of stabilized a-Se from electron time-of flight photocurrent analysis. JNCS 338–340, 569–573 (2004)CrossRef K.V. Koughia, B. Fogal, G. Belev, R.E. Johanson, S.O. Kasap, Density of states in the mobility gap of stabilized a-Se from electron time-of flight photocurrent analysis. JNCS 338–340, 569–573 (2004)CrossRef
67.
go back to reference K. Koughia, Z. Shakoor, S.O. Kasap, J.M. Marshall, Density of localized electronic states in a-Se from electron time of flight photocurrent measurements. J. Appl. Phys. 97, 033706 (2005)CrossRef K. Koughia, Z. Shakoor, S.O. Kasap, J.M. Marshall, Density of localized electronic states in a-Se from electron time of flight photocurrent measurements. J. Appl. Phys. 97, 033706 (2005)CrossRef
69.
70.
go back to reference K. Tanioka, J. Yamazaki, K. Shidara, K. Taketoshi, T. Hirai, Y. Takasaki, Adv. Electron. Electron. Phys. 74, 379 (1988)CrossRef K. Tanioka, J. Yamazaki, K. Shidara, K. Taketoshi, T. Hirai, Y. Takasaki, Adv. Electron. Electron. Phys. 74, 379 (1988)CrossRef
73.
go back to reference K. Tanioka, J. Yamazaki, K. Shidara, K. Taketoshi, T. Kawamura, S. Ishioka, Y. Takasaki, IEEE Electron. Dev. Lett. EDL-8(392) (1987) K. Tanioka, J. Yamazaki, K. Shidara, K. Taketoshi, T. Kawamura, S. Ishioka, Y. Takasaki, IEEE Electron. Dev. Lett. EDL-8(392) (1987)
74.
75.
go back to reference K. Tsuji, T. Ohshima, T. Hirai, N. Gotoh, K. Tanioka, K. Shidara, Mater. Res. Symp. Proc. 219, 507 (1991)CrossRef K. Tsuji, T. Ohshima, T. Hirai, N. Gotoh, K. Tanioka, K. Shidara, Mater. Res. Symp. Proc. 219, 507 (1991)CrossRef
76.
go back to reference K. Tsuji, Y. Takasaki, T. Hirai, J. Yamazaki, K. Tanioka, Optoelectron. Dev. Technol. (Jpn.) 9, 367 (1994) K. Tsuji, Y. Takasaki, T. Hirai, J. Yamazaki, K. Tanioka, Optoelectron. Dev. Technol. (Jpn.) 9, 367 (1994)
77.
go back to reference T. Watanabe, M. Goto, H. Ohtake, H. Maruyama, M. Abe, K. Tanioka, N. Egami, IEEE Trans. Electron. Dev. 50, 63 (2003)CrossRef T. Watanabe, M. Goto, H. Ohtake, H. Maruyama, M. Abe, K. Tanioka, N. Egami, IEEE Trans. Electron. Dev. 50, 63 (2003)CrossRef
78.
go back to reference J. Mort, The Anatomy of Xerography (McFarland, London, 1989) J. Mort, The Anatomy of Xerography (McFarland, London, 1989)
79.
go back to reference S.O. Kasap, in The Handbook of Imaging Materials, ed. by A. Diamond (Marcel Dekker, New York, 1991), ch. 8 and references therein S.O. Kasap, in The Handbook of Imaging Materials, ed. by A. Diamond (Marcel Dekker, New York, 1991), ch. 8 and references therein
Metadata
Title
Imaging and Detection
Author
Gurinder Kaur Ahluwalia, Ph.D
Copyright Year
2017
DOI
https://doi.org/10.1007/978-3-319-41190-3_5