Abstract
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 400-800 nm is achieved, which is of particular interest for applications in transparent architectures.
Original language | English (US) |
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Pages (from-to) | 18251-18257 |
Number of pages | 7 |
Journal | ACS Applied Materials and Interfaces |
Volume | 6 |
Issue number | 20 |
DOIs | |
State | Published - Oct 22 2014 |
Externally published | Yes |
Keywords
- ITO-free
- OPV
- fully solution-processing
- semitransparent polymer solar cells
ASJC Scopus subject areas
- General Materials Science