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Erschienen in: Optical and Quantum Electronics 4/2023

01.04.2023

Conduction mechanism and UV/visible photodetection properties of p-Si/n-SiC heterostructure

verfasst von: Betül Ceviz Şakar, Fatma Yıldırım, Zeynep Orhan, Ş. Aydoğan

Erschienen in: Optical and Quantum Electronics | Ausgabe 4/2023

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Abstract

This study examines the electrical and optical properties of p-Si/n-SiC heterojunctions subjected to UV and visible light in addition to the conduction mechanism of the device. The surfaces of the sputtered SiC film was analyzed using energy-dispersive X-ray (EDX) and scanning electron microscopy (SEM). The rectification ratio of the heterojunction was determined as 1.4 × 103 in the dark. In addition, the device exhibited good rectification under all lights. In stability tests of the device, an improvement in characteristics was observed in I–V measurements after 67 days, and this was attributed to carbon migration or stacking faults between Si and SiC, the interface modification and interfacial states. Since the band gap of SiC is suitable for UV detection, it was observed that the photoresponse under UV was quite good. Responsivity, detectivity, ON/OFF ratio and EQE values were analyzed as the function of applied voltage. It was observed that the device exhibited the best performance especially under 365 nm UV light. The responsivity and detectivity of the device are found to be ~ 5 A/W and 7.6 × 1011 Jones, respectively under UV (365 nm) illumination, respectively.

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Metadaten
Titel
Conduction mechanism and UV/visible photodetection properties of p-Si/n-SiC heterostructure
verfasst von
Betül Ceviz Şakar
Fatma Yıldırım
Zeynep Orhan
Ş. Aydoğan
Publikationsdatum
01.04.2023
Verlag
Springer US
Erschienen in
Optical and Quantum Electronics / Ausgabe 4/2023
Print ISSN: 0306-8919
Elektronische ISSN: 1572-817X
DOI
https://doi.org/10.1007/s11082-023-04571-9

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