Fully Solution-Processing Route toward Highly Transparent Polymer Solar Cells
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- 作者：Fei Guo ; Peter Kubis ; Tobias Stubhan ; Ning Li ; Derya Baran ; Thomas Przybilla ; Erdmann Spiecker ; Karen Forberich ; Christoph J. Brabec
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2014
- 出版时间：October 22, 2014
- 年：2014
- 卷：6
- 期：20
- 页码：18251-18257
- 全文大小：338K
- ISSN：1944-8252
文摘
We report highly transparent polymer solar cells using metallic silver nanowires (AgNWs) as both the electron- and hole-collecting electrodes. The entire stack of the devices is processed from solution using a doctor blading technique. A thin layer of zinc oxide nanoparticles is introduced between photoactive layer and top AgNW electrode which plays decisive roles in device functionality: it serves as a mechanical foundation which allows the solution-deposition of top AgNWs, and more importantly it facilitates charge carriers extraction due to the better energy level alignment and the formation of ohmic contacts between the active layer/ZnO and ZnO/AgNWs. The resulting semitransparent polymer:fullerene solar cells showed a power conversion efficiency of 2.9%, which is 72% of the efficiency of an opaque reference device. Moreover, an average transmittance of 41% in the wavelength range of 400鈥?00 nm is achieved, which is of particular interest for applications in transparent architectures.