New architecture for high-efficiency polymer photovoltaic cells using solution-based titanium oxide layer

Kwanghee Lee; Jin Young Kim; Alan J. Heeger

doi:10.1117/12.640666

23 February 2006 New architecture for high-efficiency polymer photovoltaic cells using solution-based titanium oxide layer

Kwanghee Lee, Jin Young Kim, Alan J. Heeger

Author Affiliations +

Proceedings Volume 6117, Organic Photonic Materials and Devices VIII; 61170T (2006) https://doi.org/10.1117/12.640666
Event: Integrated Optoelectronic Devices 2006, 2006, San Jose, California, United States

Abstract

New architectural polymer photovoltaic cells approaching 5% power conversion efficiency have been fabricated using titanium oxide (TiO_x) as an optical spacer. Solar cells with a TiO_x layer (deposited by a sol-gel process) between the active layer and the electron collecting aluminum electrode exhibit approximately 50% enhancement in power conversion efficiency compared to similar devices without the optical spacer. The TiO_x layer increases the efficiency by modifying the spatial distribution of the light intensity inside the device, thereby creating more photogenerated charge carriers in the bulk heterojunction layer.

Citation Download Citation

Kwanghee Lee, Jin Young Kim, and Alan J. Heeger "New architecture for high-efficiency polymer photovoltaic cells using solution-based titanium oxide layer", Proc. SPIE 6117, Organic Photonic Materials and Devices VIII, 61170T (23 February 2006); https://doi.org/10.1117/12.640666

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