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Title: The controlling mechanism for potential loss in CH 3NH 3PbBr 3 hybrid solar cells

In this study, we investigated moisture and thermal stability of MAPbBr 3 perovskite material. Cubic MAPbBr 3 was found to be moisture-insensitive and can avoid the thermal stability issues introduced by low-temperature phase transition in MAPbI 3. MAPbBr 3 and MAPbI 3 hybrid solar cells with efficiencies of ~7.1% and ~15.5%, respectively, were fabricated, and we identified the correlation between the working temperature, light intensity, and the photovoltaic performance. No charge-carrier transport barriers were found in the MAPbBr 3 and MAPbI 3 solar cells. The MAPbBr 3 solar cell displays a better stability under high working temperature because of its close-packed crystal structure. Temperature-dependent photocurrent-voltage characteristics indicate that, unlike the MAPbI 3 solar cell with an activation energy (E A) nearly equal to its band gap (E g), the E A for the MAPbBr 3 solar cell is much lower than its E g. This indicates that a high interface recombination process limits the photovoltage and consequently the device performance of the MAPbBr 3 solar cell.
Authors:
 [1] ;  [1] ;  [2] ;  [1] ;  [1] ;  [1] ;  [2] ;  [1]
  1. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)
Publication Date:
Report Number(s):
NREL/JA-5900-66015
Journal ID: ISSN 2380-8195
Grant/Contract Number:
AC36-08GO28308
Type:
Accepted Manuscript
Journal Name:
ACS Energy Letters
Additional Journal Information:
Journal Volume: 1; Journal Issue: 2; Journal ID: ISSN 2380-8195
Publisher:
American Chemical Society (ACS)
Research Org:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; activation energy; potential loss; interface recombination; transition temperature; perovskite solar cell
OSTI Identifier:
1329465

Zheng, Xiaojia, Chen, Bo, Yang, Mengjin, Wu, Congcong, Orler, Bruce, Moore, Robert B., Zhu, Kai, and Priya, Shashank. The controlling mechanism for potential loss in CH3NH3PbBr3 hybrid solar cells. United States: N. p., Web. doi:10.1021/acsenergylett.6b00215.
Zheng, Xiaojia, Chen, Bo, Yang, Mengjin, Wu, Congcong, Orler, Bruce, Moore, Robert B., Zhu, Kai, & Priya, Shashank. The controlling mechanism for potential loss in CH3NH3PbBr3 hybrid solar cells. United States. doi:10.1021/acsenergylett.6b00215.
Zheng, Xiaojia, Chen, Bo, Yang, Mengjin, Wu, Congcong, Orler, Bruce, Moore, Robert B., Zhu, Kai, and Priya, Shashank. 2016. "The controlling mechanism for potential loss in CH3NH3PbBr3 hybrid solar cells". United States. doi:10.1021/acsenergylett.6b00215. https://www.osti.gov/servlets/purl/1329465.
@article{osti_1329465,
title = {The controlling mechanism for potential loss in CH3NH3PbBr3 hybrid solar cells},
author = {Zheng, Xiaojia and Chen, Bo and Yang, Mengjin and Wu, Congcong and Orler, Bruce and Moore, Robert B. and Zhu, Kai and Priya, Shashank},
abstractNote = {In this study, we investigated moisture and thermal stability of MAPbBr3 perovskite material. Cubic MAPbBr3 was found to be moisture-insensitive and can avoid the thermal stability issues introduced by low-temperature phase transition in MAPbI3. MAPbBr3 and MAPbI3 hybrid solar cells with efficiencies of ~7.1% and ~15.5%, respectively, were fabricated, and we identified the correlation between the working temperature, light intensity, and the photovoltaic performance. No charge-carrier transport barriers were found in the MAPbBr3 and MAPbI3 solar cells. The MAPbBr3 solar cell displays a better stability under high working temperature because of its close-packed crystal structure. Temperature-dependent photocurrent-voltage characteristics indicate that, unlike the MAPbI3 solar cell with an activation energy (EA) nearly equal to its band gap (Eg), the EA for the MAPbBr3 solar cell is much lower than its Eg. This indicates that a high interface recombination process limits the photovoltage and consequently the device performance of the MAPbBr3 solar cell.},
doi = {10.1021/acsenergylett.6b00215},
journal = {ACS Energy Letters},
number = 2,
volume = 1,
place = {United States},
year = {2016},
month = {7}
}