Top and bottom surfaces limit carrier lifetime in lead iodide perovskite films
Abstract
Carrier recombination at defects is detrimental to the performance of solar energy conversion systems, including solar cells and photoelectrochemical devices. Point defects are localized within the bulk crystal while extended defects occur at surfaces and grain boundaries. If not properly managed, surfaces can be a large source of carrier recombination. Separating surface carrier dynamics from bulk and/or grain-boundary recombination in thin films is challenging. Here, we employ transient reflection spectroscopy to measure the surface carrier dynamics in methylammonium lead iodide perovskite polycrystalline films. We find that surface recombination limits the total carrier lifetime in perovskite polycrystalline thin films, meaning that recombination inside grains and/or at grain boundaries is less important than top and bottom surface recombination. As a result, the surface recombination velocity in polycrystalline films is nearly an order of magnitude smaller than that in single crystals, possibly due to unintended surface passivation of the films during synthesis.
- Authors:
-
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- National Renewable Energy Lab. (NREL), Golden, CO (United States); New Jersey Institute of Technology, Newark, NJ (United States)
- Publication Date:
- Research Org.:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; USDOE NREL Director's Fellowship; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1343263
- Report Number(s):
- NREL/JA-5900-67004
Journal ID: ISSN 2058-7546
- Grant/Contract Number:
- AC36-08GO28308
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Energy
- Additional Journal Information:
- Journal Volume: 2; Journal Issue: 2; Journal ID: ISSN 2058-7546
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 14 SOLAR ENERGY; 36 MATERIALS SCIENCE; surface recombination; perovskite solar cells; transient spectroscopy; solar cells; solar energy; optical spectroscopy
Citation Formats
Yang, Ye, Yang, Mengjin, Moore, David T., Yan, Yong, Miller, Elisa M., Zhu, Kai, and Beard, Matthew C. Top and bottom surfaces limit carrier lifetime in lead iodide perovskite films. United States: N. p., 2017.
Web. doi:10.1038/nenergy.2016.207.
Yang, Ye, Yang, Mengjin, Moore, David T., Yan, Yong, Miller, Elisa M., Zhu, Kai, & Beard, Matthew C. Top and bottom surfaces limit carrier lifetime in lead iodide perovskite films. United States. https://doi.org/10.1038/nenergy.2016.207
Yang, Ye, Yang, Mengjin, Moore, David T., Yan, Yong, Miller, Elisa M., Zhu, Kai, and Beard, Matthew C. Mon .
"Top and bottom surfaces limit carrier lifetime in lead iodide perovskite films". United States. https://doi.org/10.1038/nenergy.2016.207. https://www.osti.gov/servlets/purl/1343263.
@article{osti_1343263,
title = {Top and bottom surfaces limit carrier lifetime in lead iodide perovskite films},
author = {Yang, Ye and Yang, Mengjin and Moore, David T. and Yan, Yong and Miller, Elisa M. and Zhu, Kai and Beard, Matthew C.},
abstractNote = {Carrier recombination at defects is detrimental to the performance of solar energy conversion systems, including solar cells and photoelectrochemical devices. Point defects are localized within the bulk crystal while extended defects occur at surfaces and grain boundaries. If not properly managed, surfaces can be a large source of carrier recombination. Separating surface carrier dynamics from bulk and/or grain-boundary recombination in thin films is challenging. Here, we employ transient reflection spectroscopy to measure the surface carrier dynamics in methylammonium lead iodide perovskite polycrystalline films. We find that surface recombination limits the total carrier lifetime in perovskite polycrystalline thin films, meaning that recombination inside grains and/or at grain boundaries is less important than top and bottom surface recombination. As a result, the surface recombination velocity in polycrystalline films is nearly an order of magnitude smaller than that in single crystals, possibly due to unintended surface passivation of the films during synthesis.},
doi = {10.1038/nenergy.2016.207},
journal = {Nature Energy},
number = 2,
volume = 2,
place = {United States},
year = {2017},
month = {1}
}
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- Zhao, Baodan; Bai, S.; Kim, Vincent
- Apollo - University of Cambridge Repository
Thin single crystal perovskite solar cells to harvest below-bandgap light absorption
text, January 2017
- Shi, Tang,; Yehao, Deng,; Xun, Xiao,
- The University of North Carolina at Chapel Hill University Libraries
Hot Electron Injection into Semiconducting Polymers in Polymer Based-Perovskite Solar Cells and Their Fate
journal, January 2018
- Jiménez-López, Jesús; Puscher, Bianka M. D.; Cambarau, Werther
- SSRN Electronic Journal
Nonradiative Recombination in Perovskite Solar Cells: The Role of Interfaces
text, January 2019
- Wolff, Christian M.; Caprioglio, Pietro; Stolterfoht, Martin
- FID GEO
High-efficiency perovskite-polymer bulk heterostructure light-emitting diodes
text, January 2018
- Zhao, Baodan; Bai, Sai; Kim, Vincent
- arXiv