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journal article·2023-04-01Open access

Post treatment for precise size and shape control of monodisperse CsPbBr3 nanocrystals under ambient condition using ZnBr2

Di Kai Foo, Yanan Fang, Jaiswal Ankit, Jing Jun Lee, Baisong Cheng, Rong Ji, Qiang Zhu, Cheng Cheh Tan, Fengxia Wei, Timothy J. White

APL Materials· Volume 11· Issue 4
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Source abstract

Abstract

A mixed passivation strategy is deployed to produce monodisperse and pure CsPbBr3 nanocrystals under ambient condition via post treatment using ZnBr2 in mixed organic solvents. This room temperature synthesis route provides precise size and shape control, and colloidal nanocubes or nanospheres can be obtained depending on the choice of organic solvents. Any secondary phases’ nucleation was inhibited. The ZnBr2 can reduce the Br− vacancies at the surface termination layers, thus enhancing their properties. This approach can potentially offer a cheap and viable route for perovskite nanocrystals in optical and electrical devices.
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Research context

NanomaterialsElectronic materials

OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · 2D Materials and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR) 1 , 2 Fusionopolis Way, Innovis #08-03, Singapore 138634

School of Materials Science and Engineering, Nanyang Technological University 2 , 50 Nanyang Avenue, Singapore 639798

Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR) 3 , 2 Fusionopolis Way, Singapore 138634

School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University 4 , 21 Nanyang Link, Singapore 637371

Funding

Nanyang Technological University · Agency for Science, Technology and Research

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