All-Solution-Processed Metal-Oxide-Free Flexible Organic Solar Cells with Over 10% Efficiency

Advanced Materials
Wei SongZiyi Ge

Abstract

All-solution-processing at low temperatures is important and desirable for making printed photovoltaic devices and also offers the possibility of a safe and cost-effective fabrication environment for the devices. Herein, an all-solution-processed flexible organic solar cell (OSC) using poly(3,4-ethylenedioxythiophene):poly-(styrenesulfonate) electrodes is reported. The all-solution-processed flexible devices yield the highest power conversion efficiency of 10.12% with high fill factor of over 70%, which is the highest value for metal-oxide-free flexible OSCs reported so far. The enhanced performance is attributed to the newly developed gentle acid treatment at room temperature that enables a high-performance PEDOT:PSS/plastic underlying substrate with a matched work function (≈4.91 eV), and the interface engineering that endows the devices with better interface contacts and improved hole mobility. Furthermore, the flexible devices exhibit an excellent mechanical flexibility, as indicated by a high retention (≈94%) of the initial efficiency after 1000 bending cycles. This work provides a simple route to fabricate high-performance all-solution-processed flexible OSCs, which is important for the development of printing, blading, a...Continue Reading

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Citations

Nov 27, 2018·Chemical Communications : Chem Comm·Zhouyi LiXinsheng Peng
Aug 17, 2018·ACS Applied Materials & Interfaces·Sang Woo JinJeong Sook Ha
Feb 6, 2020·The Journal of Physical Chemistry Letters·Jianqiu XuMin Xiao
Jan 22, 2020·Chemical Reviews·Yaokang ZhangZijian Zheng
Mar 10, 2020·ACS Applied Materials & Interfaces·Cheng ZhangJian-Mei Lu
Nov 16, 2019·ACS Applied Materials & Interfaces·Zhiqiang ZhangRabah Boukherroub
Dec 17, 2021·ACS Applied Materials & Interfaces·Young Un KimDong Hoon Choi
Jan 19, 2022·ACS Applied Materials & Interfaces·Jeong-Hyun WooJu-Young Kim

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