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Title: Lead halide perovskite nanowires stabilized by block copolymers for Langmuir-Blodgett assembly

Abstract

The rapid development of solar cells based on lead halide perovskites (LHPs) has prompted very active research activities in other closely-related fields. Colloidal nanostructures of such materials display superior optoelectronic properties. Especially, one-dimensional (1D) LHPs nanowires show anisotropic optical properties when they are highly oriented. However, the ionic nature makes them very sensitive to external environment, limiting their large scale practical applications. Here, we introduce an amphiphilic block copolymer, polystyrene-block-poly(4-vinylpyridine) (PS-P4VP), to chemically modify the surface of colloidal CsPbBr3 nanowires. Finally, the resulting core-shell nanowires show enhanced photoluminescent emission and good colloidal stability against water. Taking advantage of the stability enhancement, we further applied a modified Langmuir-Blodgett technique to assemble monolayers of highly aligned nanowires, and studied their anisotropic optical properties.

Authors:
 [1];  [2];  [1];  [1];  [3];  [1];  [1];  [3];  [3]
+ Show Author Affiliations
  1. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Univ. of California, Berkeley, CA (United States)
  3. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Kavli Energy NanoScience Institute, Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
OSTI Identifier:
1619155
Grant/Contract Number:  
AC02-05CH11231; DGE 1752814
Resource Type:
Accepted Manuscript
Journal Name:
Nano Research
Additional Journal Information:
Journal Volume: 13; Journal Issue: 5; Journal ID: ISSN 1998-0124
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; nanowires; anisotropic optical properties; aligned monolayer; lead halide perovskites; stability enhancement

Citation Formats

Liu, Hao, Siron, Martin, Gao, Mengyu, Lu, Dylan, Bekenstein, Yehonadav, Zhang, Dandan, Dou, Letian, Alivisatos, A. Paul, and Yang, Peidong. Lead halide perovskite nanowires stabilized by block copolymers for Langmuir-Blodgett assembly. United States: N. p., 2020. Web. doi:10.1007/s12274-020-2717-9.
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Liu, Hao, Siron, Martin, Gao, Mengyu, Lu, Dylan, Bekenstein, Yehonadav, Zhang, Dandan, Dou, Letian, Alivisatos, A. Paul, & Yang, Peidong. Lead halide perovskite nanowires stabilized by block copolymers for Langmuir-Blodgett assembly. United States. https://doi.org/10.1007/s12274-020-2717-9
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Liu, Hao, Siron, Martin, Gao, Mengyu, Lu, Dylan, Bekenstein, Yehonadav, Zhang, Dandan, Dou, Letian, Alivisatos, A. Paul, and Yang, Peidong. Mon . "Lead halide perovskite nanowires stabilized by block copolymers for Langmuir-Blodgett assembly". United States. https://doi.org/10.1007/s12274-020-2717-9. https://www.osti.gov/servlets/purl/1619155.
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@article{osti_1619155,
title = {Lead halide perovskite nanowires stabilized by block copolymers for Langmuir-Blodgett assembly},
author = {Liu, Hao and Siron, Martin and Gao, Mengyu and Lu, Dylan and Bekenstein, Yehonadav and Zhang, Dandan and Dou, Letian and Alivisatos, A. Paul and Yang, Peidong},
abstractNote = {The rapid development of solar cells based on lead halide perovskites (LHPs) has prompted very active research activities in other closely-related fields. Colloidal nanostructures of such materials display superior optoelectronic properties. Especially, one-dimensional (1D) LHPs nanowires show anisotropic optical properties when they are highly oriented. However, the ionic nature makes them very sensitive to external environment, limiting their large scale practical applications. Here, we introduce an amphiphilic block copolymer, polystyrene-block-poly(4-vinylpyridine) (PS-P4VP), to chemically modify the surface of colloidal CsPbBr3 nanowires. Finally, the resulting core-shell nanowires show enhanced photoluminescent emission and good colloidal stability against water. Taking advantage of the stability enhancement, we further applied a modified Langmuir-Blodgett technique to assemble monolayers of highly aligned nanowires, and studied their anisotropic optical properties.},
doi = {10.1007/s12274-020-2717-9},
journal = {Nano Research},
number = 5,
volume = 13,
place = {United States},
year = {Mon Mar 09 00:00:00 EDT 2020},
month = {Mon Mar 09 00:00:00 EDT 2020}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1007/s12274-020-2717-9
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