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High‐Pressure Band‐Gap Engineering in Lead‐Free Cs2AgBiBr6 Double Perovskite

Li, Qian, Wang, Yonggang, Pan, Weicheng, Yang, Wenge, Zou, Bo, Tang, Jiang, Quan, Zewei·2017·Angewandte Chemie International Edition

Abstract

Novel inorganic lead‐free double perovskites with improved stability are regarded as alternatives to state‐of‐art hybrid lead halide perovskites in photovoltaic devices. The recently discovered Cs 2 AgBiBr 6 double perovskite exhibits attractive optical and electronic features, making it promising for various optoelectronic applications. However, its practical performance is hampered by the large band gap. In this work, remarkable band gap narrowing of Cs 2 AgBiBr 6 is, for the first time, achieved on inorganic photovoltaic double perovskites through high pressure treatments. Moreover, the narrowed band gap is partially retainable after releasing pressure, promoting its optoelectronic applications. This work not only provides novel insights into the structure–property relationship in lead‐free double perovskites, but also offers new strategies for further development of advanced perovskite devices.

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Metadata

Authors
Li, Q., Wang, Y., Pan, W., Yang, W., Zou, B., Tang, J., & Quan, Z.
Venue
Angewandte Chemie International Edition
Publisher
Wiley
Published
2017-11-15
Volume
56
Issue
50
Pages
15969-15973
ISSN
  • 1433-7851 (ISSN-L)
  • 1521-3773
OpenAlex
W2766386126
Cited by
292
References
20
FWCI
8.17
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: High‐Pressure Band‐Gap Engineering in Lead‐Free Cs2AgBiBr6 Double Perovskite. https://app.cochat.ai/papers/10.1002/anie.201708684
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Li, Q., Wang, Y., Pan, W., Yang, W., Zou, B., Tang, J., & Quan, Z. (2017). High‐Pressure Band‐Gap Engineering in Lead‐Free Cs2AgBiBr6 Double Perovskite. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.201708684

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