期刊
SYNTHETIC METALS
卷 198, 期 -, 页码 1-5出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2014.09.035
关键词
CuI; Anode buffer layer; Complex impedance; Inverted polymer solar cells
资金
- National Natural Science Foundation of China [61275035, 61370046]
- Chinese National Programs for High Technology Research and Development (863 program) [2013AA030902]
- Project of Science and Technology Development Plan of Jilin Province [20120324, 20130206075SF]
- Scientific Frontier and Interdiscipline Innovative Projects of Jilin University [2013ZY18]
- Key Technology Research and Development Program of Changchun [13KG66]
- Opened Fund of the State Key Laboratory on Integrated Optoelectronics [IOSKL2012KF03]
The p-type semiconductor copper iodide (CuI) was incorporated into P3HT:ICBA bulk heterojunction polymer solar cells (PSCs) as a novel anode buffer layer. The power conversion efficiency of PSCs with 2 nm CuI is 3.84%, about 1.6 times higher than that of the reference device without CuI, which is due to the simultaneous enhanced photocurrent (J(sc)), open current voltage (V-oc) and fill factor (FF). The CuI buffer layer can module the Schottky barrier and form an ohmic contact at the P3HT:ICBA/Au interface, which act as both holes transport layer and electron block layer. The complex impedance spectra indicate that CuI buffer layer can also effectively decrease the series resistance of whole device. (C) 2014 Elsevier B.V. All rights reserved.
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