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Title: Low-dimensional perovskite nanoplatelet synthesis using in situ photophysical monitoring to establish controlled growth

Abstract

Perovskite nanoparticles have attracted the attention of research groups around the world for their impressive photophysical properties, facile synthesis and versatile surface chemistry. Here, we report a synthetic route that takes advantage of a suite of soluble precursors to generate CsPbBr 3 perovskite nanoplatelets with fine control over size, thickness and optical properties. We demonstrate near unit cell precision, creating well characterized materials with sharp, narrow emission lines at 430, 460 and 490 nm corresponding to nanoplatelets that are 2, 4, and 6 unit cells thick, respectively. Nanoplatelets were characterized with optical spectroscopy, atomic force microscopy, scanning electron microscopy and transmission electron microscopy to explicitly correlate growth conditions, thickness and resulting photophysical properties. Detailed in situ photoluminescence spectroscopic studies were carried out to understand and optimize particle growth by correlating light emission with nanoplatelet growth across a range of synthetic conditions. It was found that nanoplatelet thickness and emission wavelength increase as the ratio of oleic acid to oleyl amine or the reaction temperature is increased. Using this information, we control the lateral size, width and corresponding emission wavelength of the desired nanoplatelets by modulating the temperature and ratios of the ligand.

Authors:
 [1];  [2];  [2];  [1];  [3];  [1]; ORCiD logo [4];  [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
  3. Univ. of California, Berkeley, CA (United States)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Ecole Polytechnique Fédérale de Lausanne, Lausanne (Switzerland)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS) (SC-27)
OSTI Identifier:
1564046
Alternate Identifier(s):
OSTI ID: 1529707
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Nanoscale
Additional Journal Information:
Journal Volume: 11; Journal Issue: 37; Journal ID: ISSN 2040-3364
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English

Citation Formats

Do, Mai, Kim, Irene, Kolaczkowski, Matthew A., Kang, Jun, Kamat, Gaurav A., Yuan, Zhenghao, Barchi, Nicola S., Wang, Lin -Wang, Liu, Yi, Jurow, Matthew J., and Sutter-Fella, Carolin M. Low-dimensional perovskite nanoplatelet synthesis using in situ photophysical monitoring to establish controlled growth. United States: N. p., 2019. Web. doi:10.1039/c9nr04010b.
Do, Mai, Kim, Irene, Kolaczkowski, Matthew A., Kang, Jun, Kamat, Gaurav A., Yuan, Zhenghao, Barchi, Nicola S., Wang, Lin -Wang, Liu, Yi, Jurow, Matthew J., & Sutter-Fella, Carolin M. Low-dimensional perovskite nanoplatelet synthesis using in situ photophysical monitoring to establish controlled growth. United States. doi:10.1039/c9nr04010b.
Do, Mai, Kim, Irene, Kolaczkowski, Matthew A., Kang, Jun, Kamat, Gaurav A., Yuan, Zhenghao, Barchi, Nicola S., Wang, Lin -Wang, Liu, Yi, Jurow, Matthew J., and Sutter-Fella, Carolin M. Tue . "Low-dimensional perovskite nanoplatelet synthesis using in situ photophysical monitoring to establish controlled growth". United States. doi:10.1039/c9nr04010b.
@article{osti_1564046,
title = {Low-dimensional perovskite nanoplatelet synthesis using in situ photophysical monitoring to establish controlled growth},
author = {Do, Mai and Kim, Irene and Kolaczkowski, Matthew A. and Kang, Jun and Kamat, Gaurav A. and Yuan, Zhenghao and Barchi, Nicola S. and Wang, Lin -Wang and Liu, Yi and Jurow, Matthew J. and Sutter-Fella, Carolin M.},
abstractNote = {Perovskite nanoparticles have attracted the attention of research groups around the world for their impressive photophysical properties, facile synthesis and versatile surface chemistry. Here, we report a synthetic route that takes advantage of a suite of soluble precursors to generate CsPbBr3 perovskite nanoplatelets with fine control over size, thickness and optical properties. We demonstrate near unit cell precision, creating well characterized materials with sharp, narrow emission lines at 430, 460 and 490 nm corresponding to nanoplatelets that are 2, 4, and 6 unit cells thick, respectively. Nanoplatelets were characterized with optical spectroscopy, atomic force microscopy, scanning electron microscopy and transmission electron microscopy to explicitly correlate growth conditions, thickness and resulting photophysical properties. Detailed in situ photoluminescence spectroscopic studies were carried out to understand and optimize particle growth by correlating light emission with nanoplatelet growth across a range of synthetic conditions. It was found that nanoplatelet thickness and emission wavelength increase as the ratio of oleic acid to oleyl amine or the reaction temperature is increased. Using this information, we control the lateral size, width and corresponding emission wavelength of the desired nanoplatelets by modulating the temperature and ratios of the ligand.},
doi = {10.1039/c9nr04010b},
journal = {Nanoscale},
number = 37,
volume = 11,
place = {United States},
year = {2019},
month = {6}
}

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Works referenced in this record:

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Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set
journal, October 1996


From ultrasoft pseudopotentials to the projector augmented-wave method
journal, January 1999


The rise of graphene
journal, March 2007

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