期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 30, 页码 19658-19664出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b05348
关键词
work function; surface dipole; organic solar cells; solution-processable electrodes; charge-neutral interlayer; photoelectron spectroscopy; energy-level alignment
We demonstrate the ability of the highly fluorinated, chemically inert copolymer poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) to significantly increase the work function of a variety of common electrode materials. The work function change is hypothesized to occur via physisorption of the polymer layer and formation of a surface dipole at the polymer/conductor interface. When incorporated into organic solar cells, an interlayer of PVDF HFP at an Ag anode increases the open circuit voltage by 0.4 eV and improves device power conversion efficiency by approximately an order of magnitude relative to Ag alone. Solution-processable in air, PVDF-HFP thin films provide one possible route toward achieving low cost, nonreactive, high work function electrodes.
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