期刊
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
卷 208, 期 10, 页码 2339-2343出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssa.201084174
关键词
electronic mobility; graphene; HOMO; LUMO; SPF graphene
资金
- National Outstanding Youth Science Foundation [60825407]
- National Natural Science Fund Project [60877025, 61077044]
- Beijing Science and Technology Committee [Z08000303220803, D090803044009001, Z101103055810003]
- Beijing Natural Science Fund Project [2092024]
- Beijing education Committee
- National Basic Research Program of China (973 Program) [2011CB932700, 2011CB932703]
We present the fabrication and performance studies of organic photovoltaic (OPV) devices with bulk heterojunction (BHJ) structure that use organic solution-processable functionalized graphene (SPFGraphene) as an electron-acceptor material and poly(3-octylthiophene) (P3OT) as a donor material. The structural configuration of the device is ITO/PEDOT:PSS/P3OT:PCBM-SPFGraphene/LiF/Al. After mixing graphene into the device, the performance enhanced significantly. Given illumination at 100 mW/cm(2) AM1.5 and P3OT/PCBM (1:1) mixture with 9 wt% of SPFGraphene, we recorded the best performances. The open-circuit voltage (V-oc) is 0.67 V. The short-circuit current density (J(sc)) is 4.6 mA/cm(2). The FF is 0.37. And the power conversion efficiency is 1.14%. In the P3OT:PCBM-SPFGraphene composite, the SPFGraphene acts as exciton dissociation sites and provides the transport pathway of LUMO-graphene-Al. Adding SPFGraphene into P3OT produces an appropriate energetic distance between the HOMO and the LUMO of the donor/acceptor, which leads to a high open-circuit voltage. Besides, doping SPFGraphene provides a higher exciton dissociation volume mobility of carrier transport, which leads to a large short-circuit current density. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据