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Title: Spatially resolved multicolor CsPbX 3 nanowire heterojunctions via anion exchange

Abstract

Halide perovskites are promising semiconductor materials for solution-processed optoelectronic devices. Their strong ionic bonding nature results in highly dynamic crystal lattices, inherently allowing rapid ion exchange at the solid–vapor and solid–liquid interface. In this paper, we show that the anion-exchange chemistry can be precisely controlled in single-crystalline halide perovskite nanomaterials when combined with nanofabrication techniques. We demonstrate spatially resolved multicolor CsPbX3 (X = Cl, Br, I, or alloy of two halides) nanowire heterojunctions with a pixel size down to 500 nm with the photoluminescence tunable over the entire visible spectrum. In addition, the heterojunctions show distinct electronic states across the interface, as revealed by Kelvin probe force microscopy. Finally, these perovskite heterojunctions represent key building blocks for high-resolution multicolor displays beyond current state-of-the-art technology as well as high-density diode/transistor arrays.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
OSTI Identifier:
1369085
Alternate Identifier(s):
OSTI ID: 1417596
Grant/Contract Number:  
AC02-05CH11231; DGE 1106400
Resource Type:
Published Article
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Volume: 114 Journal Issue: 28; Journal ID: ISSN 0027-8424
Publisher:
Proceedings of the National Academy of Sciences
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; nanowire; halide perovskite; anion exchange; heterojunction

Citation Formats

Dou, Letian, Lai, Minliang, Kley, Christopher S., Yang, Yiming, Bischak, Connor G., Zhang, Dandan, Eaton, Samuel W., Ginsberg, Naomi S., and Yang, Peidong. Spatially resolved multicolor CsPbX 3 nanowire heterojunctions via anion exchange. United States: N. p., 2017. Web. doi:10.1073/pnas.1703860114.
Dou, Letian, Lai, Minliang, Kley, Christopher S., Yang, Yiming, Bischak, Connor G., Zhang, Dandan, Eaton, Samuel W., Ginsberg, Naomi S., & Yang, Peidong. Spatially resolved multicolor CsPbX 3 nanowire heterojunctions via anion exchange. United States. doi:10.1073/pnas.1703860114.
Dou, Letian, Lai, Minliang, Kley, Christopher S., Yang, Yiming, Bischak, Connor G., Zhang, Dandan, Eaton, Samuel W., Ginsberg, Naomi S., and Yang, Peidong. Mon . "Spatially resolved multicolor CsPbX 3 nanowire heterojunctions via anion exchange". United States. doi:10.1073/pnas.1703860114.
@article{osti_1369085,
title = {Spatially resolved multicolor CsPbX 3 nanowire heterojunctions via anion exchange},
author = {Dou, Letian and Lai, Minliang and Kley, Christopher S. and Yang, Yiming and Bischak, Connor G. and Zhang, Dandan and Eaton, Samuel W. and Ginsberg, Naomi S. and Yang, Peidong},
abstractNote = {Halide perovskites are promising semiconductor materials for solution-processed optoelectronic devices. Their strong ionic bonding nature results in highly dynamic crystal lattices, inherently allowing rapid ion exchange at the solid–vapor and solid–liquid interface. In this paper, we show that the anion-exchange chemistry can be precisely controlled in single-crystalline halide perovskite nanomaterials when combined with nanofabrication techniques. We demonstrate spatially resolved multicolor CsPbX3 (X = Cl, Br, I, or alloy of two halides) nanowire heterojunctions with a pixel size down to 500 nm with the photoluminescence tunable over the entire visible spectrum. In addition, the heterojunctions show distinct electronic states across the interface, as revealed by Kelvin probe force microscopy. Finally, these perovskite heterojunctions represent key building blocks for high-resolution multicolor displays beyond current state-of-the-art technology as well as high-density diode/transistor arrays.},
doi = {10.1073/pnas.1703860114},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 28,
volume = 114,
place = {United States},
year = {2017},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1073/pnas.1703860114

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