期刊
JOULE
卷 4, 期 6, 页码 1206-1235出版社
CELL PRESS
DOI: 10.1016/j.joule.2020.04.007
关键词
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资金
- National Research Foundation of Korea (NRF) - Korea government (Ministry of Science and ICT) [NRF-2016R1A3B1908431]
- Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) - Ministry of Science and ICT [NRF-2018M3D1A1058536]
- U.S. Department of Energy (DOE) [DE-AC36-08GO28308]
- Alliance for Sustainable Energy, LLC
- U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Solar Energy Technologies office
Metal halide perovskites (MHPs) are being widely studied as a light-absorber for high-efficiency solar cells. With efforts being made throughout the globe, the power conversion efficiency of MHP solar cells has recently soared up to 25.2%. MHPs are now being spotlighted as a next-generation light-emitter as well. Their high color purity and solution-processability are of particular interest for display applications, which in general benefit from wide color gamut and low-cost high-resolution subpixel patterning. For this reason, research activities on perovskite light-emitting diodes (LEDs) are rapidly growing, and their external quantum efficiencies have been dramatically improved to over 20%. As more and more research groups with different backgrounds are working on these perovskite optoelectronic devices, the demand is growing for standard methods for accurate efficiency measurement that can be agreed upon across the disciplines and, at the same time, can be realized easily in the lab environment with due diligence. Herein, optoelectronic characterization methods are revisited from the viewpoint of MHP solar cells and LEDs. General efficiency measurement practices are first reviewed, common sources of errors are introduced, and guidelines for avoiding or minimizing those errors are then suggested to help researchers in fields develop the best measurement practice.
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