Photovoltaic Materials, Devices, and Technologies

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

[+] Author Affiliations
Jie Li, Yifan Zheng, Ding Zheng, Junsheng Yu

University of Electronic Science and Technology of China, School of Optoelectronic Information, State Key Laboratory of Electronic Thin Films and Integrated Devices, Chengdu 610054, China

J. Photon. Energy. 6(3), 035502 (Aug 03, 2016). doi:10.1117/1.JPE.6.035502
History: Received February 2, 2016; Accepted July 11, 2016
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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%.

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© 2016 Society of Photo-Optical Instrumentation Engineers

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", J. Photon. Energy. 6(3), 035502 (Aug 03, 2016). ; http://dx.doi.org/10.1117/1.JPE.6.035502


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