New architecture for high-efficiency polymer photovoltaic cells using solution-based titanium oxide as an optical spacer
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- New architecture for high-efficiency polymer photovoltaic cells using solution-based titanium oxide as an optical spacer
- Kim, Jin Young; Kim, SH; Lee, HH; Lee, K; Ma, WL; Gong, X; Heeger, AJ
- PLASTIC SOLAR-CELLS; PHOTOINDUCED ELECTRON-TRANSFER; BULK-HETEROJUNCTION; THIN-FILMS; DEVICES; CONVERSION; NETWORK
- Issue Date
- WILEY-V C H VERLAG GMBH
- ADVANCED MATERIALS, v.18, no.5, pp.572 - 576
- Polymer photovoltaic cells with power conversion efficiencies approaching 5% have been fabricated using titanium oxide (TiOx) as an optical spacer (see Figure). Solar cells with a TiOx layer (deposited via a sol-gel process) between the active layer and the electron-collecting aluminum electrode exhibit approximately a 50 % enhancement in short-circuit current compared to similar devices without the optical spacer, as a result of modification of the spatial distribution of the light intensity inside the device.
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