Abstract
The surface composition of poly(3-hexylthiophene-2,5-diyl) and fullerene derivative [6,6]-phenyl-C61-butyric acid methyl ester (P3HT/PCBM) blend films could be changed by controlling the film formation process via using mixed solvents with different evaporation rates. The second solvent, with a higher boiling point than that of the first solvent and much better solubility for PCBM than P3HT, is chosen to mix with the first solvent with a lower boiling point and good solubility for both PCBM and P3HT. The slow evaporation rate of the second solvent provides enough time for PCBM to diffuse upwards during the solvent evaporation. Thus, the weight ratio of PCBM and P3HT (m PCBM/m P3HT) at surface of the blend films was varied from ca. 0.1 to ca. 0.72, i.e., it increases about seven times by changing from single solvent to mixed solvents. Meanwhile, the mixed solvents were in favor to form P3HT naonofiber network and enhance phase separation of P3HT/PCBM blend films. As a result, the power conversion efficiency of the device from mixed solvents with slow evaporation process was about 1.5 times of the one from single solvents.
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Yu, G., Gao, J., Hummelen, J.C., Wudl, F. and Heeger, A.J., Science, 1995, 270: 1789
Lee, J.Y., Zhang, Q., Emrick, T. and Crosby, A.J., Macromolecules, 2006, 39: 7392
Mackay, M.E., Dao, T.T., Tuteja, A., Ho, D.L., Horn, B.V., Kim, H.C. and Hawker, C.J., Nat. Mater., 2003, 2: 762
Björström, C.M., Bernasik, A., Rysz, J., Budkowski, A., Nilsson, S., Svensson, M., Andersson, M.R., Magnusson, K.O. and Moons, E., J. Phys.: Condens. Matter., 2005, 17: L529
McGarrity, E.S., Frischknecht, A.L., Frink, L.J.D. and Mackay, M.E., Phys. Rev. Lett., 2007, 99: 238302
Yamamoto, S., Kitazawa, D., Tsukamoto, J., Shibamori, T., Seki, H. and Nakagawa, Y., Thin Solid Film, 2010, 518: 2115
Yu, B.Y., Lin, W.C., Wang, W.B., Iida, S.I., Chen, S.Z., Liu, C.Y., Kuo, C.H., Lee, S.H., Kao, W.L., Yen, G.J., You, Y.W., Liu, C.P., Jou, J.H. and Shyue, J.J., ACS Nano., 2010, 4: 833
Xu, Z., Chen, L.M., Yang, G., Huang, C.H., Hou, J., Wu, Y., Li, G., Hsu, C.S. and Yang, Y., Adv. Funct. Mater., 2009, 19: 1227
C-Quiles, M., Ferenczi, T., Agostinelli, T., Etchegoin, P.G., Kim, Y., Anthopoulos, T.D., Stavrinou, P.N., Bradley, D.D.C. and Nelson, J., Nat. Mater., 2008, 7: 158
Parnell, A.J., Dunbar, A.D.F., Pearson, A.J., Staniec, P.A., Dennison, A.J.C., Hamamatsu, H., Skoda, M.W.A., Lidzey, D.G. and Jones, R.A.L., Adv. Mater., 2010, 22: 2444
Kiel, J.W., Kirby, B.J., Majkrzak, C.F., Maranville, B.B. and Mackay, M.E., Soft Matter., 2010, 6: 641
de Villers, B.T., Tassone, C.J., Tolbert, S.H. and Schwartz, B.J., J. Phys. Chem. C, 2009, 113: 18978
Jo, J., Na, S.I., Kim, S.S., Lee, T.W., Chung, Y., Kang, S.J., Vak, D. and Kim, D.Y., Adv. Funct. Mater., 2009, 19: 2398
Arias, A.C., Polym. Rev., 2006, 46: 103
Wei, Q., Tajima, K., Tong, Y., Ye, S. and Hashimoto, K., J. Am. Chem. Soc., 2009, 131: 17597
Wei, Q., Nishizawa, T., Tajima, K. and Hashimoto, K., Adv. Mater., 2008, 20: 2211
Germack, D.S., Chan, C.K., Kline, R.J., Fischer, D.A., Gundlach, D.J., Toney, M.F., Richter, L.J. and de Longchamp, D.M., Macromolecules, 2010, 43: 3828
Germack, D.S., Chan, C.K., Hamadani, B.H., Richter, L.J., Fischer, D.A., Gundlach, D.J. and de Longchamp, D.M., Appl. Phys. Lett., 2009, 94: 233303
Park, H.J., Kang, M.G., Ahn, S.H. and Guo, L.J., Adv. Mater., 2010, 22: E247
Arias, A.C., Corcoran, N., Banach, M., Friend, R.H., MacKenzie, J.D. and Huck, W.T.S., Appl. Phys. Lett., 2002, 80: 1695
Goffri, S., Mülier, C., S-Stutzmann, N., Breiby, D.W., Ranano, C.P., Andreasen, J.W., Thompson, R., Janssen, R.A.J., Nielsen, M.M., Smith, P. and Sirringhaus, H., Nat. Mater., 2006, 5: 950
Zhao, K., Ding, Z., Xue, L. and Han, Y., Macromol. Rapid Commun., 2010, 31: 532
Wang, D.H., Lee, H.K., Choi, D.G., Park, J.H. and Park, O.O., Appl. Phys. Lett., 2009, 95: 043505
Wang, D.H., Choi, D.G., Park, O.O. and Park, J.H., J. Mater. Chem., 2010, 20: 4910
Wang, D.H., Choi, D.G., Lee, K.J., Park, O.O. and Park, J.H., Langmuir, 2010, 26: 9584
Liang, C.W., Su, W.F. and Wang, L., Appl. Phys. Lett., 2009, 95: 133303
Heriot, S.Y. and Jones, R.A.L., Nat. Mater., 2005, 4: 782
Jukes, P.C., Heriot, S.Y., Sharp, J.S. and Jones, R.A.L., Macromolecules, 2005, 38: 2030
Machui, F., Langner, S., Zhu, X., Abbott, S. and Brabec, C.J., Solar Energy Materials & Solar Cells, 2012, 100: 138
Park, C.D., Fleetham, T.A., Li, J. and Vogt, B.D., Organic Electronics, 2011, 12: 1465
Li, L., Tang, H., Wu, H., Lu, G. and Yang, X., Organic Electronics, 2009, 10: 1334
Gao, X. and Han, Y., Chinese J. Polym. Sci., 2013, 31(4): 610
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This work was financially supported by the National Natural Science Foundation of China (Nos. 20621401, 20834005, 51073151), and the Ministry of Science and Technology of China (No. 2009CB623604).
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Sun, Y., Liu, Jg., Ding, Y. et al. Controlling the surface composition of PCBM in P3HT/PCBM blend films by using mixed solvents with different evaporation rates. Chin J Polym Sci 31, 1029–1037 (2013). https://doi.org/10.1007/s10118-013-1295-7
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DOI: https://doi.org/10.1007/s10118-013-1295-7