Solution-Processable NiO<sub>x</sub>:PMMA Hole Transport Layer for Efficient and Stable Inverted Organic Solar Cells

Tianyu Kong; Genjie Yang; Pu Fan; Junsheng Yu

doi:10.3390/polym15081875

Polymers (Apr 2023)

Solution-Processable NiO<sub>x</sub>:PMMA Hole Transport Layer for Efficient and Stable Inverted Organic Solar Cells

Tianyu Kong,
Genjie Yang,
Pu Fan,
Junsheng Yu

Affiliations

Tianyu Kong: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Genjie Yang: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Pu Fan: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Junsheng Yu: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China

DOI: https://doi.org/10.3390/polym15081875
Journal volume & issue: Vol. 15, no. 8
p. 1875

Abstract

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For organic solar cells (OSCs), nickel oxide (NiOx) is a potential candidate as the hole transport layer (HTL) material. However, due to the interfacial wettability mismatch, developing solution-based fabrication methods of the NiOx HTL is challenging for OSCs with inverted device structures. In this work, by using N, N-dimethylformamide (DMF) to dissolve poly(methyl methacrylate) (PMMA), the polymer is successfully incorporated into the NiOx nanoparticle (NP) dispersions to modify the solution-processable HTL of the inverted OSCs. Benefiting from the improvements of electrical and surface properties, the inverted PM6:Y6 OSCs based on the PMMA-doped NiOx NP HTL achieves an enhanced power conversion efficiency of 15.11% as well as improved performance stability in ambient conditions. The results demonstrated a viable approach to realize efficient and stable inverted OSCs by tuning the solution-processable HTL.

Published in Polymers

ISSN: 2073-4360 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Organic chemistry
Website: http://www.mdpi.com/journal/polymers/

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