Efficient Luminescence from Perovskite Quantum Dot Solids

被引：510

作者：

Kim, Younghoon ^{[1
]}

Yassitepe, Emre ^{[1
,2
]}

Voznyy, Oleksandr ^{[1
]}

Comin, Riccardo ^{[1
]}

Walters, Grant ^{[1
]}

Gong, Xiwen ^{[1
]}

Kanjanaboos, Pongsakorn ^{[1
]}

Nogueira, Ana F. ^{[2
]}

Sargent, Edward H. ^{[1
]}

机构：

[1] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada

[2] Univ Estadual Campinas, UNICAMP, Inst Chem, BR-13084971 Campinas, SP, Brazil

来源：

ACS APPLIED MATERIALS & INTERFACES | 2015年 / 7卷 / 45期

基金：

巴西圣保罗研究基金会; 加拿大自然科学与工程研究理事会;

关键词：

cesium lead halide; perovskites; quantum dots; centrifugal casting; nanocrystal films; ANION-EXCHANGE; PERFORMANCE; NANOCRYSTALS; PHOTOLUMINESCENCE; BR; CL; EMISSION; CSPBX3;

D O I：

10.1021/acsami.5b09084

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nanocrystals of CsPbX3 perovskites are promising materials for light-emitting optoelectronics because of their colloidal stability, optically tunable bandgap, bright photoluminescence, and excellent photoluminescence quantum yield. Despite their promise, nanocrystal-only films of CsPbX3 perovskites have not yet been fabricated; instead, highly insulating polymers have been relied upon to compensate for nanocrystals unstable surfaces. We develop solution chemistry that enables single-step casting of perovskite nanocrystal films and overcomes problems in both perovskite quantum dot purification and film fabrication. Centrifugally cast films retain bright photoluminescence and achieve dense and homogeneous morphologies. The new materials offer a platform for optoelectronic applications of perovskite quantum dot solids.

引用

页码：25007 / 25013

页数：7

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