Inverted organic solar cell using ZnO interfacial layer with low temperature process

Jun Young Kim

doi:10.1117/12.3002371

12 March 2024 Inverted organic solar cell using ZnO interfacial layer with low temperature process

Jun Young Kim

Proceedings Volume PC12883, Organic Photonic Materials and Devices XXVI; PC128830G (2024) https://doi.org/10.1117/12.3002371
Event: SPIE OPTO, 2024, San Francisco, California, United States

Conference Poster

Abstract

This study applies various ZnO thin films (sol-gel process based on high and low temperature and nanoparticle process) as electron extraction layer in inverted organic solar cells based on PBDB-T:ITIC, and the correlation between ZnO and solar cell performance was analyzed. When the ZnO thin film was formed by the high temperature(450°C) sol-gel process, the sheet resistance of ITO electrode was increased up to 5 times. As a result, the power conversion efficiency was low at 4.12%. In the nanoparticle process, butanol-based ZnO has better dispersion and surface properties than IPA-based ZnO, resulting in improved organic solar cell performance (PCE of 6.35% and 4.58% with butanol and IPA-based ZnO respectively). In addition, ZnO precursor solution with a low-temperature (150°C) sol-gel process was developed, and as a result of applying it as an electron extraction layer of an inverted organic solar cell, the device performance was greatly improved (PCE of 8.89%). The main reason for the improvement of the device performance is that the ripple-shaped surface is formed, which facilitates extraction of electrons and has excellent surface roughness.

Citation Download Citation

Jun Young Kim "Inverted organic solar cell using ZnO interfacial layer with low temperature process", Proc. SPIE PC12883, Organic Photonic Materials and Devices XXVI, PC128830G (12 March 2024); https://doi.org/10.1117/12.3002371

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