標題: Influences of thermal annealing on P3HT/PCBM interfacial properties and charge dynamics in polymer solar cells
作者: Cheng, Cheng-En
Dinelli, Franco
Yu, Chen-Te
Shih, Hwa-Wei
Pei, Zingway
Chang, Chen-Shiung
Chien, Forest Shih-Sen
光電工程學系
Department of Photonics
公開日期: 1-十二月-2015
摘要: The effects of thermal annealing on the interfacial properties of poly(3-hexylthiophene) (P3HT)/[6,6]-phenyl C-61 butyric acid methyl ester (PCBM) and on the charge dynamics in P3HT: PCBM polymer solar cells (PSCs) are investigated. This study determines that an effective phase separation of the P3HT and PCBM caused by thermal annealing achieves a larger interfacial area for efficient exciton dissociation and a well-defined pn junction with few defect levels at the P3HT/PCBM interface. Additionally, thermal annealing creates a compositional gradient across the P3HT: PCBM films, which enhances the charge transit ability significantly. These improved interfacial properties and efficiency in charge transit ability account for the better power conversion efficiency of P3HT: PCBM PSCs treated with thermal annealing. (C) 2015 The Japan Society of Applied Physics
URI: http://dx.doi.org/10.7567/JJAP.54.122301
http://hdl.handle.net/11536/129344
ISSN: 0021-4922
DOI: 10.7567/JJAP.54.122301
期刊: JAPANESE JOURNAL OF APPLIED PHYSICS
Volume: 54
Issue: 12
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