High Intensity Photodegradation of Lead Halide Perovskite Nanocrystals

被引：1
作者：
Shaw, Peter J. [1 ]
Mercier, Thomas M. [1 ]
Bailey, Christopher G. [2 ]
Kanaras, Antonios G. [2 ]
Lagoudakis, Pavlos G. [2 ]
Charlton, Martin D. B. [1 ]
机构：
[1] Univ Southampton, Elect & Comp Sci, Southampton, Hants, England
[2] Univ Southampton, Phys & Astron, Southampton, Hants, England
来源：
LIGHT-EMITTING DEVICES, MATERIALS, AND APPLICATIONS XXIV | 2020年 / 11302卷
关键词：
perovskite; nanocrystals; colour conversion; LEDs; high intensity; stability; degradation; photoactivation; ENHANCED STABILITY; ANION-EXCHANGE; QUANTUM DOTS; CSPBBR3; BR; CL; PHOTOACTIVATION; LUMINESCENT; CSPBX3; BRIGHT;
D O I：
10.1117/12.2544170
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this work, we probe the photodegradative behaviour of CsPbBr3 perovskite nanocrystals under illumination intensities in excess of 1 W/cm(2). 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 FAPbBr(3) and show that FAPbBr(3) can withstand such high intensities for approximately ten times longer than CsPbBr3. This marks out FAPbBr(3) as a potential successor to CsPbBr3 in optoelectronic applications.
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页数：9
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