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Title: Low Surface Recombination Velocity in Solution-Grown CH3NH3PbBr3 Perovskite Single Crystal

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms8961· OSTI ID:1220695

Organic-inorganic hybrid perovskites are attracting intense research effort due to their impressive performance in solar cells. While the carrier transport parameters such as mobility and bulk carrier lifetime shows sufficient characteristics, the surface recombination, which can have major impact on the solar cell performance, has not been studied. Here we measure surface recombination dynamics in CH3NH3PbBr3 perovskite single crystals using broadband transient reflectance spectroscopy. The surface recombination velocity is found to be 3.4±0.1 103 cm s-1, B2–3 orders of magnitude lower than that in many important unpassivated semiconductors employed in solar cells. Our result suggests that the planar grain size for the perovskite thin films should be larger thanB30 mm to avoid the influence of surface recombination on the effective carrier lifetime.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1220695
Report Number(s):
NREL/JA-5900-63911
Journal Information:
Nature Communications, Vol. 6; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 368 works
Citation information provided by
Web of Science

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Strontium Insertion in Methylammonium Lead Iodide: Long Charge Carrier Lifetime and High Fill-Factor Solar Cells journal September 2016
Organic Cations Might Not Be Essential to the Remarkable Properties of Band Edge Carriers in Lead Halide Perovskites journal October 2016
High-Temperature Ionic Epitaxy of Halide Perovskite Thin Film and the Hidden Carrier Dynamics journal July 2017
High-Performance Single-Crystalline Perovskite Thin-Film Photodetector journal January 2018
Argon Plasma Treatment to Tune Perovskite Surface Composition for High Efficiency Solar Cells and Fast Photodetectors journal January 2018
Defect and Contact Passivation for Perovskite Solar Cells journal April 2019
Investigation of Electrode Electrochemical Reactions in CH 3 NH 3 PbBr 3 Perovskite Single‐Crystal Field‐Effect Transistors journal July 2019
Nonradiative Recombination in Perovskite Solar Cells: The Role of Interfaces journal October 2019
Two‐Step Antisolvent Precipitated MAPbI 3 ‐Pellet‐Based Robust Room‐Temperature Ammonia Sensor journal August 2019
Transient Energy Reservoir in 2D Perovskites journal August 2019
Structure and Growth Control of Organic-Inorganic Halide Perovskites for Optoelectronics: From Polycrystalline Films to Single Crystals journal March 2016
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