Exploration of Near-Infrared-Emissive Colloidal Multinary Lead Halide Perovskite Nanocrystals Using an Automated Microfluidic Platform

ACS Nano
Ioannis LignosMaksym V Kovalenko

Abstract

Hybrid organic-inorganic and fully inorganic lead halide perovskite nanocrystals (NCs) have recently emerged as versatile solution-processable light-emitting and light-harvesting optoelectronic materials. A particularly difficult challenge lies in warranting the practical utility of such semiconductor NCs in the red and infrared spectral regions. In this context, all three archetypal A-site monocationic perovskites-CH3NH3PbI3, CH(NH2)2PbI3, and CsPbI3-suffer from either chemical or thermodynamic instabilities in their bulk form. A promising approach toward the mitigation of these challenges lies in the formation of multinary compositions (mixed cation and mixed anion). In the case of multinary colloidal NCs, such as quinary Cs xFA1- xPb(Br1- yI y)3 NCs, the outcome of the synthesis is defined by a complex interplay between the bulk thermodynamics of the solid solutions, crystal surface energies, energetics, dynamics of capping ligands, and the multiple effects of the reagents in solution. Accordingly, the rational synthesis of such NCs is a formidable challenge. Herein, we show that droplet-based microfluidics can successfully tackle this problem and synthesize Cs xFA1- xPbI3 and Cs xFA1- xPb(Br1- yI y)3 NCs in both a time- and...Continue Reading

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Citations

Sep 25, 2018·Physical Chemistry Chemical Physics : PCCP·Ilia A VovkIvan D Rukhlenko
Jul 25, 2019·Chemical Communications : Chem Comm·Akkapol Suea-NgamAndrew J deMello
Mar 13, 2019·Angewandte Chemie·Jingru ZhangShengzhong Frank Liu
Feb 27, 2020·Physical Chemistry Chemical Physics : PCCP·Josefa Ibaceta-JañaAxel Hoffmann
Nov 23, 2019·Small·Jinsong SuiGuangsheng Luo
Jun 17, 2020·Chemical Society Reviews·Cheng-Hsin LuZhiqun Lin
Jan 16, 2021·Analytical Chemistry·Yu ZhangMichele Zagnoni
Apr 3, 2021·Journal of Chemical Information and Modeling·Yuanqing TangJoshua Schrier
Apr 15, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Mayssam NajiE Yegan Erdem
Jun 18, 2021·ACS Nano·Amrita DeyLakshminarayana Polavarapu
Mar 26, 2019·Chemistry of Materials : a Publication of the American Chemical Society·Quinten A AkkermanLiberato Manna
Nov 27, 2019·Analytical Chemistry·Yun DingAndrew J deMello
Jan 16, 2022·Advanced Science·Lu LiuShengzhong Frank Liu
Jan 13, 2022·Lab on a Chip·Logan M WilderRichard M Crooks

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Methods Mentioned

BETA
X-ray
transmission electron microscopy
size-fractioning
differential scanning calorimetry
Assay

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