Inside Perovskites: Quantum Luminescence from Bulk Cs4PbBr6 Single Crystals

被引：212

作者：

De Bastiani, Michele ^{[1
]}

Dursun, Ibrahim ^{[1
]}

Zhang, Yuhai ^{[1
]}

Alshankiti, Buthainah A. ^{[1
]}

Miao, Xiao-He ^{[2
]}

Yin, Jun ^{[1
]}

Yengel, Emre ^{[1
]}

Alarousu, Erkki ^{[1
]}

Turedi, Bekir ^{[1
]}

Almutlaq, Jawaher M. ^{[1
]}

Saidaminov, Makhsud I. ^{[1
,7
]}

Mitra, Somak ^{[3
]}

Gereige, Issam ^{[4
]}

AlSaggaf, Ahmed ^{[4
]}

Zhu, Yihan ^{[5
]}

Han, Yu ^{[5
]}

Rogan, Iman S. ^{[3
]}

Bredas, Jean-Luc ^{[1
]}

Mohammed, Omar F. ^{[1
]}

Bakr, Osman M. ^{[1
,6
]}

机构：

[1] King Abdullah Univ Sci & Technol, Div Phys Sci & Engn PSE, KAUST Solar Ctr KSC, Thuwal 239556900, Saudi Arabia

[2] King Abdullah Univ Sci & Technol, Imaging & Characterizat Core Lab, Thuwal 239556900, Saudi Arabia

[3] King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Thuwal 239556900, Saudi Arabia

[4] Saudi Aramco Res & Dev Ctr, Dhahran 31311, Saudi Arabia

[5] King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Adv Membranes & Porous Mat Ctr, Thuwal 239556900, Saudi Arabia

[6] King Abdullah Univ Sci & Technol, Div Phys Sci & Engn PSE, KAUST Catalysis Ctr KCC, Thuwal 239556900, Saudi Arabia

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

来源：

CHEMISTRY OF MATERIALS | 2017年 / 29卷 / 17期

关键词：

DEPENDENT EXCITONIC PHOTOLUMINESCENCE; HETEROJUNCTION SOLAR-CELLS; ROOM-TEMPERATURE SYNTHESIS; HALIDE PEROVSKITES; NANOCRYSTALS; CRYSTALLIZATION; ABSORPTION; EMISSION; DEFECTS; GROWTH;

D O I：

10.1021/acs.chemmater.7b02415

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Zero-dimensional perovskite-related structures (0D-PRS) are a new frontier of perovskite-based materials. 0D-PRS, commonly synthesized in powder form, manifest distinctive optical properties such as strong photoluminescence (PL), narrow emission line width, and high exciton binding energy. These properties make 0D-PRS compelling for several types of optoelectronic applications, including phosphor screens and electroluminescent devices. However, it would not be possible to rationally design the chemistry and structure of these materials, without revealing the origins of their optical behavior, which is contradictory to the well-studied APbX(3) perovskites. In this work, we synthesize single crystals of Cs(4)PbB(r)6 0D-PRS, and investigated the origins of their unique optical and electronic properties. The crystals exhibit a PL quantum yield higher than 40%, the highest reported for perovskite-based single crystals. Time-resolved and temperature dependent PL studies, supported by DFT calculations, and structural analysis, elucidate an emissive behavior reminiscent of a quantum confined structure rather than a typical bulk perovskite material.

引用

页码：7108 / 7113

页数：6

共 55 条

[1] Nearly Monodisperse Insulator Cs4PbX6 (X = Cl, Br, I) Nanocrystals, Their Mixed Halide Compositions, and Their Transformation into CsPbX3 Nanocrystals [J].