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.

引用

页数：9

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