Effect of organic small-molecule hole injection materials on the performance of inverted organic solar cells

Jie Li; Yifan Zheng; Ding Zheng; Junsheng Yu

doi:10.1117/1.JPE.6.035502

3 August 2016 Effect of organic small-molecule hole injection materials on the performance of inverted organic solar cells

Jie Li, Yifan Zheng, Ding Zheng, Junsheng Yu

Author Affiliations +

Journal of Photonics for Energy, Vol. 6, Issue 3, 035502 (August 2016). https://doi.org/10.1117/1.JPE.6.035502

Abstract

In this study, the influence of small-molecule organic hole injection materials on the performance of organic solar cells (OSCs) as the hole transport layer (HTL) with an architecture of ITO/ZnO/P3HT:PC₇₁BM/HTL/Ag has been investigated. A significant enhancement on the performance of OSCs from 1.06% to 2.63% is obtained by using N, N′-bis(1-naphthalenyl)-N, N′-bis-phenyl-(1, 1′-biphenyl)-4, 4′-diamine (NPB) HTL. Through the resistance simulation and space-charge limited current analysis, we found that NPB HTL cannot merely improve the hole mobility of the device but also form the Ohmic contact between the active layer and anode. Besides, when we apply mix HTL by depositing the NPB on the surface of molybdenum oxide, the power conversion efficiency of OSC are able to be further improved to 2.96%.

Citation Download Citation

Jie Li, Yifan Zheng, Ding Zheng, and Junsheng Yu "Effect of organic small-molecule hole injection materials on the performance of inverted organic solar cells," Journal of Photonics for Energy 6(3), 035502 (3 August 2016). https://doi.org/10.1117/1.JPE.6.035502

Published: 3 August 2016

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