High intensity photodegradation of lead halide perovskite nanocrystals

Peter J. Shaw; Thomas M. Mercier; Christopher G. Bailey; Antonios G. Kanaras; Pavlos G. Lagoudakis; Martin D. B. Charlton

doi:10.1117/12.2544170

25 February 2020 High intensity photodegradation of lead halide perovskite nanocrystals

Peter J. Shaw, Thomas M. Mercier, Christopher G. Bailey, Antonios G. Kanaras, Pavlos G. Lagoudakis, Martin D. B. Charlton

Author Affiliations +

Proceedings Volume 11302, Light-Emitting Devices, Materials, and Applications XXIV; 1130208 (2020) https://doi.org/10.1117/12.2544170
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

In this work, we probe the photodegradative behaviour of CsPbBr₃ perovskite nanocrystals under illumination intensities in excess of 1 W=cm². In doing so, we uncover optical behaviours unique to this extreme form of degradation namely a pronounced period of increasing photoluminescent intensity at the outset of degradation along with a red-shifted emission lobe.

We also compare the photochemical lifetimes of CsPbBr3 to the relating organic-inorganic hybrid of FAPbBr₃ and show that FAPbBr₃ can withstand such high intensities for approximately ten times longer than CsPbBr₃. This marks out FAPbBr₃ as a potential successor to CsPbBr₃ in optoelectronic applications.

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Citation Download Citation

Peter J. Shaw, Thomas M. Mercier, Christopher G. Bailey, Antonios G. Kanaras, Pavlos G. Lagoudakis, and Martin D. B. Charlton "High intensity photodegradation of lead halide perovskite nanocrystals", Proc. SPIE 11302, Light-Emitting Devices, Materials, and Applications XXIV, 1130208 (25 February 2020); https://doi.org/10.1117/12.2544170

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