Integrated organic photovoltaic modules

William J. Potscavage; Seunghyup Yoo; Benoit Domercq; Jungbae Kim; Joe Holt; Bernard Kippelen

doi:10.1117/12.735320

17 October 2007 Integrated organic photovoltaic modules

William J. Potscavage, Seunghyup Yoo, Benoit Domercq, Jungbae Kim, Joe Holt, Bernard Kippelen

Proceedings Volume 6656, Organic Photovoltaics VIII; 66560R (2007) https://doi.org/10.1117/12.735320
Event: Photonic Devices + Applications, 2007, San Diego, California, United States

Abstract

Methods for scalable output voltage and encapsulation of organic photovoltaic cells are addressed in this paper. To obtain scalable output voltages, integrated photovoltaic modules comprised of a bulk heterojunction of poly(3- hexylthiophene) (P3HT) and a soluble C₇₀ derivative, [6,6]-phenyl C₇₁ butyric acid methyl ester (PCBM-70), were fabricated. Power conversion efficiency of individual P3HT/PCBM-70 cells was estimated to be 4.1 % for AM1.5 G illumination. Modules of one to four cells connected in series produced open-circuit voltages V_OC that linearly depend on the number of cells N as V_OC = N × 0.621 V with a nearly constant short-circuit current of 1.4 ± 0.1 mA. Separately, shelf lifetimes of more than one year were achieved for pentacene/C₆₀ solar cells by encapsulation with a 200-nm-thick layer of Al₂O₃ deposited by atomic layer deposition (ALD). In addition, the ALD process improved the open-circuit voltage and power conversion efficiency of the solar cells by thermal annealing that occurs during the process.

Citation Download Citation

William J. Potscavage, Seunghyup Yoo, Benoit Domercq, Jungbae Kim, Joe Holt, and Bernard Kippelen "Integrated organic photovoltaic modules", Proc. SPIE 6656, Organic Photovoltaics VIII, 66560R (17 October 2007); https://doi.org/10.1117/12.735320

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