Quantitative Specifications to Avoid Degradation during E-Beam and Induced Current Microscopy of Halide Perovskite Devices
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1659669.pdf
Description
Accepted version
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1.76 MB
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Checksum (MD5)
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Author(s)
Luo, Yanqi
Parikh, Pritesh
Brenner, Thomas M
Kim, Min-cheol
Wang, Rui
Yang, Yang
Correa-Baena, Juan-Pablo
Buonassisi, Tonio
Meng, Ying Shirley
Fenning, David P
Date Issued
2020
Journal
Journal of Physical Chemistry C
Publisher
American Chemical Society (ACS)
Citation
Luo, Yanqi, Parikh, Pritesh, Brenner, Thomas M, Kim, Min-cheol, Wang, Rui et al. 2020. "Quantitative Specifications to Avoid Degradation during E-Beam and Induced Current Microscopy of Halide Perovskite Devices." Journal of Physical Chemistry C, 124 (35).
Version
Author's final manuscript
Abstract
Copyright © 2020 American Chemical Society. Degradation due to electron beam exposure has posed a challenge in the use of electron microscopy to probe halide perovskite materials and devices. In this study, the interaction between the electron beam and the perovskite across acceleration voltages and at low probe currents is investigated in a scanning electron microscope (SEM) by monitoring the electron-beam-induced current (EBIC) response in perovskite solar cells in a plan-view configuration. SEM probe conditions are identified where dozens of repeated scans over a single region of the perovskite solar cell induce minimal electronic degradation. Overall, the induced current response of the perovskite device is found to strongly depend upon the beam condition: Rapid decay occurs at high beam powers, the current activates at the lowest beam powers, and a newfound quasi-steady response is revealed at intermediate beam conditions. A quantitative window for the successful conduction of e-beam studies with minimal electronic degradation is revealed by evaluating induced current response over a wide range of perovskite devices, which invites broader use of SEM-based characterization techniques, including EBIC, as powerful techniques for correlative microscopy investigations.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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DOI of Published Version
https://doi.org/10.1021/ACS.JPCC.0C06733
