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Title: Understanding and Eliminating Hysteresis for Highly Efficient Planar Perovskite Solar Cells

Abstract

Through detailed device characterization using cross-sectional Kelvin probe force microscopy (KPFM) and trap density of states measurements, we identify that the J-V hysteresis seen in planar organic-inorganic hybrid perovskite solar cells (PVSCs) using SnO2 electron selective layers (ESLs) synthesized by low-temperature plasma-enhanced atomic-layer deposition (PEALD) method is mainly caused by the imbalanced charge transportation between the ESL/perovskite and the hole selective layer/perovskite interfaces. We find that this charge transportation imbalance is originated from the poor electrical conductivity of the low-temperature PEALD SnO2 ESL. We further discover that a facile low-temperature thermal annealing of SnO2 ESLs can effectively improve the electrical mobility of low-temperature PEALD SnO2 ESLs and consequently significantly reduce or even eliminate the J-V hysteresis. With the reduction of J-V hysteresis and optimization of deposition process, planar PVSCs with stabilized output powers up to 20.3% are achieved. Here, the results of this study provide insights for further enhancing the efficiency of planar PVSCs.

Authors:
 [1];  [2];  [3];  [3];  [3];  [3];  [3];  [4];  [3];  [3];  [5];  [6];  [3];  [2];  [2];  [5]; ORCiD logo [3]
  1. Univ. of Toledo, Toledo, OH (United States); Wuhan Univ., Wuhan (China)
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  3. Univ. of Toledo, Toledo, OH (United States)
  4. Univ. of Heidelberg, Heidelberg (Germany)
  5. Wuhan Univ., Wuhan (China)
  6. Southeast Univ., Nanjing (China)
Publication Date:
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), SunShot Initiative; USDOE
OSTI Identifier:
1392207
Alternate Identifier(s):
OSTI ID: 1378809
Report Number(s):
NREL/JA-5K00-68335
Journal ID: ISSN 1614-6832
Grant/Contract Number:  
AC36-08GO28308; FOA-0000990
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Energy Materials
Additional Journal Information:
Journal Volume: 7; Journal Issue: 17; Journal ID: ISSN 1614-6832
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; hysteresis; Kelvin probe force microscopy; perovskite solar cells; post annealing

Citation Formats

Wang, Changlei, Xiao, Chuanxiao, Yu, Yue, Zhao, Dewei, Awni, Rasha A., Grice, Corey R., Ghimire, Kiran, Constantinou, Iordania, Liao, Weiqiang, Cimaroli, Alexander J., Liu, Pei, Chen, Jing, Podraza, Nikolas J., Jiang, Chun -Sheng, Al-Jassim, Mowafak M., Zhao, Xingzhong, and Yan, Yanfa. Understanding and Eliminating Hysteresis for Highly Efficient Planar Perovskite Solar Cells. United States: N. p., 2017. Web. doi:10.1002/aenm.201700414.
Wang, Changlei, Xiao, Chuanxiao, Yu, Yue, Zhao, Dewei, Awni, Rasha A., Grice, Corey R., Ghimire, Kiran, Constantinou, Iordania, Liao, Weiqiang, Cimaroli, Alexander J., Liu, Pei, Chen, Jing, Podraza, Nikolas J., Jiang, Chun -Sheng, Al-Jassim, Mowafak M., Zhao, Xingzhong, & Yan, Yanfa. Understanding and Eliminating Hysteresis for Highly Efficient Planar Perovskite Solar Cells. United States. doi:10.1002/aenm.201700414.
Wang, Changlei, Xiao, Chuanxiao, Yu, Yue, Zhao, Dewei, Awni, Rasha A., Grice, Corey R., Ghimire, Kiran, Constantinou, Iordania, Liao, Weiqiang, Cimaroli, Alexander J., Liu, Pei, Chen, Jing, Podraza, Nikolas J., Jiang, Chun -Sheng, Al-Jassim, Mowafak M., Zhao, Xingzhong, and Yan, Yanfa. Thu . "Understanding and Eliminating Hysteresis for Highly Efficient Planar Perovskite Solar Cells". United States. doi:10.1002/aenm.201700414. https://www.osti.gov/servlets/purl/1392207.
@article{osti_1392207,
title = {Understanding and Eliminating Hysteresis for Highly Efficient Planar Perovskite Solar Cells},
author = {Wang, Changlei and Xiao, Chuanxiao and Yu, Yue and Zhao, Dewei and Awni, Rasha A. and Grice, Corey R. and Ghimire, Kiran and Constantinou, Iordania and Liao, Weiqiang and Cimaroli, Alexander J. and Liu, Pei and Chen, Jing and Podraza, Nikolas J. and Jiang, Chun -Sheng and Al-Jassim, Mowafak M. and Zhao, Xingzhong and Yan, Yanfa},
abstractNote = {Through detailed device characterization using cross-sectional Kelvin probe force microscopy (KPFM) and trap density of states measurements, we identify that the J-V hysteresis seen in planar organic-inorganic hybrid perovskite solar cells (PVSCs) using SnO2 electron selective layers (ESLs) synthesized by low-temperature plasma-enhanced atomic-layer deposition (PEALD) method is mainly caused by the imbalanced charge transportation between the ESL/perovskite and the hole selective layer/perovskite interfaces. We find that this charge transportation imbalance is originated from the poor electrical conductivity of the low-temperature PEALD SnO2 ESL. We further discover that a facile low-temperature thermal annealing of SnO2 ESLs can effectively improve the electrical mobility of low-temperature PEALD SnO2 ESLs and consequently significantly reduce or even eliminate the J-V hysteresis. With the reduction of J-V hysteresis and optimization of deposition process, planar PVSCs with stabilized output powers up to 20.3% are achieved. Here, the results of this study provide insights for further enhancing the efficiency of planar PVSCs.},
doi = {10.1002/aenm.201700414},
journal = {Advanced Energy Materials},
number = 17,
volume = 7,
place = {United States},
year = {2017},
month = {5}
}

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