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Title: Synthetic Control of the Photoluminescence Stability of Organolead Halide Perovskites

Abstract

An optimized synthetic procedure for preparing photostable nanocrystalline methylammonium lead halide materials is reported. The procedure was developed by adjusting the lead halide to methylammonium/octylammonium halide precursor ratio. At a high precursor ratio (1:3), a blue-shifted photoinduced luminescence peak is measured at 642 nm for CH 3NH 3PbI 3 with 0.01 to 12 mJ pulsed-laser irradiation. The appearance of this peak is reversible over 300 min upon blocking the irradiation. In order to determine if the peak is the result of a phase change, in situ x-ray diffraction measurements were performed. No phase change was measured with an irradiance that causes the appearance of the photoinduced luminescence peak. Luminescence microscpectroscopy measurements showed that the use of a lower precursor ratio (1:1.5) produces CH 3NH 3PbI 3 and CH 3NH 3PbBr 3 perovskites that are stable over 4 min of illumination. Given the lack of a measured phase change, and the dependence on the precursor ratio, the photoinduced luminesce peak may derive from surface trap states. Finally, the enhanced photostability of the resulting perovskite nanocrystals produced with the optimized synthetic procedure supports their use in stable optoelectronic devices.

Authors:
 [1];  [1];  [1];  [2];  [2];  [1];  [1]; ORCiD logo [1]
  1. Ames Lab., and Iowa State Univ., Ames, IA (United States). Dept. of Chemistry
  2. Iowa State Univ., Ames, IA (United States). Dept. of Chemistry
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Chemical Sciences, Geosciences & Biosciences Division
OSTI Identifier:
1573237
Report Number(s):
IS-J 10069
Journal ID: ISSN 1870-249X
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the Mexican Chemical Society
Additional Journal Information:
Journal Volume: 63; Journal Issue: 3; Journal ID: ISSN 1870-249X
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; surface traps; nanocrystalline perovskites; photostability; single nanocrystal analysis; synthetic optimization; optoelectronics

Citation Formats

Freppon, Daniel J., Men, Long, Bhattacharjee, Ujjal, Rosales, Bryan A., Zhu, Feng, Petrich, Jacob W., Smith, Emily A., and Vela, Javier. Synthetic Control of the Photoluminescence Stability of Organolead Halide Perovskites. United States: N. p., 2019. Web. doi:10.29356/jmcs.v63i3.623.
Freppon, Daniel J., Men, Long, Bhattacharjee, Ujjal, Rosales, Bryan A., Zhu, Feng, Petrich, Jacob W., Smith, Emily A., & Vela, Javier. Synthetic Control of the Photoluminescence Stability of Organolead Halide Perovskites. United States. doi:10.29356/jmcs.v63i3.623.
Freppon, Daniel J., Men, Long, Bhattacharjee, Ujjal, Rosales, Bryan A., Zhu, Feng, Petrich, Jacob W., Smith, Emily A., and Vela, Javier. Thu . "Synthetic Control of the Photoluminescence Stability of Organolead Halide Perovskites". United States. doi:10.29356/jmcs.v63i3.623. https://www.osti.gov/servlets/purl/1573237.
@article{osti_1573237,
title = {Synthetic Control of the Photoluminescence Stability of Organolead Halide Perovskites},
author = {Freppon, Daniel J. and Men, Long and Bhattacharjee, Ujjal and Rosales, Bryan A. and Zhu, Feng and Petrich, Jacob W. and Smith, Emily A. and Vela, Javier},
abstractNote = {An optimized synthetic procedure for preparing photostable nanocrystalline methylammonium lead halide materials is reported. The procedure was developed by adjusting the lead halide to methylammonium/octylammonium halide precursor ratio. At a high precursor ratio (1:3), a blue-shifted photoinduced luminescence peak is measured at 642 nm for CH3NH3PbI3 with 0.01 to 12 mJ pulsed-laser irradiation. The appearance of this peak is reversible over 300 min upon blocking the irradiation. In order to determine if the peak is the result of a phase change, in situ x-ray diffraction measurements were performed. No phase change was measured with an irradiance that causes the appearance of the photoinduced luminescence peak. Luminescence microscpectroscopy measurements showed that the use of a lower precursor ratio (1:1.5) produces CH3NH3PbI3 and CH3NH3PbBr3 perovskites that are stable over 4 min of illumination. Given the lack of a measured phase change, and the dependence on the precursor ratio, the photoinduced luminesce peak may derive from surface trap states. Finally, the enhanced photostability of the resulting perovskite nanocrystals produced with the optimized synthetic procedure supports their use in stable optoelectronic devices.},
doi = {10.29356/jmcs.v63i3.623},
journal = {Journal of the Mexican Chemical Society},
number = 3,
volume = 63,
place = {United States},
year = {2019},
month = {10}
}

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