skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: CsPbBr 3 Perovskite Nanocrystal Grown on MXene Nanosheets for Enhanced Photoelectric Detection and Photocatalytic CO 2 Reduction

Abstract

All-inorganic CsPbX 3 (X = Cl, Br or I) perovskite nanocrystals have attracted extensive interest recently due to their exceptional optoelectronic properties. In an effort to improve the charge separation and transfer following efficient exciton generation in such nanocrystals, novel functional nanocomposites were synthesized by the in situ growth of CsPbBr 3 perovskite nanocrystals on two-dimensional MXene nanosheets. Efficient excited state charge transfer occurs between CsPbBr 3 NCs and MXene nanosheets, as indicated by significant photoluminescence (PL) quenching and much shorter PL decay lifetimes compared with pure CsPbBr 3 NCs. The as-obtained CsPbBr 3/MXene nanocomposites demonstrated increased photocurrent generation in response to visible light and X-ray illumination, attesting to the potential application of these heterostructure nanocomposites for photoelectric detection. The efficient charge transfer also renders the CsPbBr 3/MXene nanocomposite an active photocatalyst for the reduction of CO 2 to CO and CH 4. This work provides a guide for exploration of perovskite materials in next-generation optoelectronics, such as photoelectric detectors or photocatalyst.

Authors:
ORCiD logo [1];  [1];  [1];  [1];  [1];  [2];  [3];  [2]; ORCiD logo [1]; ORCiD logo [4]
  1. Xi'an Jiaotong Univ., Shaanxi (China). Dept. of Chemistry
  2. Chengdu Univ. of Information Technology, Chengdu (China). College of Optoelectronic Technology
  3. Xi'an Jiaotong Univ., Shaanxi (China). International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). The Molecular Foundry
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
OSTI Identifier:
1599813
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Physical Chemistry Letters
Additional Journal Information:
Journal Volume: 10; Journal Issue: 21; Journal ID: ISSN 1948-7185
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Charge transfer; Two dimensional materials; Nanocomposites; Photoluminescence; Transmission electron microscopy

Citation Formats

Pan, Aizhao, Ma, Xiaoqin, Huang, Shengying, Wu, Youshen, Jia, Mengjun, Shi, Yeming, Liu, Ya, Wangyang, Peihua, He, Ling, and Liu, Yi. CsPbBr3 Perovskite Nanocrystal Grown on MXene Nanosheets for Enhanced Photoelectric Detection and Photocatalytic CO2 Reduction. United States: N. p., 2019. Web. doi:10.1021/acs.jpclett.9b02605.
Pan, Aizhao, Ma, Xiaoqin, Huang, Shengying, Wu, Youshen, Jia, Mengjun, Shi, Yeming, Liu, Ya, Wangyang, Peihua, He, Ling, & Liu, Yi. CsPbBr3 Perovskite Nanocrystal Grown on MXene Nanosheets for Enhanced Photoelectric Detection and Photocatalytic CO2 Reduction. United States. doi:10.1021/acs.jpclett.9b02605.
Pan, Aizhao, Ma, Xiaoqin, Huang, Shengying, Wu, Youshen, Jia, Mengjun, Shi, Yeming, Liu, Ya, Wangyang, Peihua, He, Ling, and Liu, Yi. Wed . "CsPbBr3 Perovskite Nanocrystal Grown on MXene Nanosheets for Enhanced Photoelectric Detection and Photocatalytic CO2 Reduction". United States. doi:10.1021/acs.jpclett.9b02605. https://www.osti.gov/servlets/purl/1599813.
@article{osti_1599813,
title = {CsPbBr3 Perovskite Nanocrystal Grown on MXene Nanosheets for Enhanced Photoelectric Detection and Photocatalytic CO2 Reduction},
author = {Pan, Aizhao and Ma, Xiaoqin and Huang, Shengying and Wu, Youshen and Jia, Mengjun and Shi, Yeming and Liu, Ya and Wangyang, Peihua and He, Ling and Liu, Yi},
abstractNote = {All-inorganic CsPbX3 (X = Cl, Br or I) perovskite nanocrystals have attracted extensive interest recently due to their exceptional optoelectronic properties. In an effort to improve the charge separation and transfer following efficient exciton generation in such nanocrystals, novel functional nanocomposites were synthesized by the in situ growth of CsPbBr3 perovskite nanocrystals on two-dimensional MXene nanosheets. Efficient excited state charge transfer occurs between CsPbBr3 NCs and MXene nanosheets, as indicated by significant photoluminescence (PL) quenching and much shorter PL decay lifetimes compared with pure CsPbBr3 NCs. The as-obtained CsPbBr3/MXene nanocomposites demonstrated increased photocurrent generation in response to visible light and X-ray illumination, attesting to the potential application of these heterostructure nanocomposites for photoelectric detection. The efficient charge transfer also renders the CsPbBr3/MXene nanocomposite an active photocatalyst for the reduction of CO2 to CO and CH4. This work provides a guide for exploration of perovskite materials in next-generation optoelectronics, such as photoelectric detectors or photocatalyst.},
doi = {10.1021/acs.jpclett.9b02605},
journal = {Journal of Physical Chemistry Letters},
issn = {1948-7185},
number = 21,
volume = 10,
place = {United States},
year = {2019},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

Save / Share: