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Title: Mechanism for dimethylformamide-treatment of poly(3,4-ethylenedioxythiophene) : poly(styrene sulfonate) layer to enhance short circuit current of polymer solar cells
Authors: Gong, Cheng
Yang, Hongbin
Song, Qun Liang
Lu, Zhisong
Li, Chang Ming
Issue Date: 2012
Source: Gong, C., Yang, H. B., Song, Q. L., Lu, Z. S., & Li, C. M. (2012). Mechanism for dimethylformamide-treatment of poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) layer to enhance short circuit current of polymer solar cells. Solar Energy Materials and Solar Cells, 100, 115-119.
Series/Report no.: Solar energy materials and solar cells
Abstract: Dimethylformamide (DMF), an organic solvent, was used to treat the poly(3, 4-ethylenedioxythiophene): poly(styrene sulfonate) (PEDOT: PSS) layer in poly(3-hexylthiophene) (P3HT): [6,6]-phenyl C61-butyric acid methyl ester (PCBM) polymer solar cells, resulting in significant enhancement of photocurrent and power conversion efficiency (PCE) improvement by 70%. Analyses of I–V characteristics reveal that the change in the active layer rather than that of the PEDOT: PSS buffer layer is ascribed to performance improvement. AFM images indicate that the roughness of PEDOT: PSS layer has been increased after the treatment. We argue that the protrudent PEDOT: PSS could serve as the centers for an initial crystallization of P3HT chains leading to a better alignment of P3HT: PCBM domains for a greatly enhanced photocurrent.
ISSN: 0927-0248
DOI: 10.1016/j.solmat.2011.12.006
Rights: © 2012 Elsevier B.V.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCBE Journal Articles

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