Publication date: 6th November 2020
Organic-inorganic hybrid perovskite solar cells are very promising photovoltaics with a fastly increasing efficiency of over 25%. But the instability of the performance is currently one of the significant technical barriers to their commercialization. Mobile ions migration/accumulation is reported to be the physical mechanism for performance instability, I-V hysteresis, and performance changes during light soaking. An extensive comprehension of how illumination/light-soaking influence perovskites are of fundamental significance to improve the stability of its optoelectronic applications. In this report, a light soaking study on several kinds of perovskites monocrystalline and polycrystalline film will be discussed via temporal-resolved and detection-wavelength selective micro-imaging spectroscopic techniques.[1-5] These works clarify different roles of mobile ion and charge carriers and demonstrate the advantages of the imaging spectroscopy in studying the carrier dynamics of perovskite-based materials under light soaking.
This work is supported by the Australian Government through the Australian Renewable Energy Agency. Responsibility for the views, information, or advice expressed herein is not accepted by the Australian Government.
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