Liquid-phase sintering of lead halide perovskites and metal-organic framework glasses

Journal:
Science
Published:
DOI:
10.1126/science.abf4460
Affiliations:
13
Authors:
27
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Research Highlight

Glass brings stability to an unstable semiconductor

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Tiny crystals of an inherently unstable photoluminescent semiconductor become much more robust when encased in a glassy matrix, opening the way to use them in LED lighting and device screens.

A class of semiconductors known as lead halide perovskites have excellent optoelectronic properties that could see them replace silicon-based and other conventional semiconductors in solar cells and optoelectronic devices. But heat, moisture, intense light, and water can make them unstable and they can leak toxic lead ions.

Now, a team led by researchers at the University of Queensland in Australia has overcome these problems by forming a composite between nanocrystals of lead halide perovskite and a special type of glass.

The glass acts as a matrix that stabilizes the lead halide perovskite, and its photoluminescence holds up well even when it is immersed in water for thousands of hours.

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References

  1. Science 374, 621–625 (2021). doi: 10.1126/science.abf4460
Institutions Authors Share
The University of Queensland (UQ), Australia
11.000000
11.000000
 0.41
University of Leeds, United Kingdom (UK)
3.000000
 0.11
National Institute of Chemistry, Slovenia, Slovenia
2.000000
 0.07
University of Cambridge, United Kingdom (UK)
2.000000
 0.07
European Synchrotron Radiation Facility (ESRF), France
2.000000
 0.07
Shanghai Jiao Tong University (SJTU), China
1.000000
 0.04
Laboratoire de Physique des Solides (LPS), France
1.000000
 0.04
Nagasaki University, Japan
1.000000
 0.04
Australian Synchrotron, ANSTO, Australia
1.000000
 0.04
Civil Aviation University of China (CAUC), China
1.000000
 0.04
China Academy of Engineering Physics (CAEP), China
1.000000
 0.04
University of California, Santa Barbara (UCSB), United States of America (USA)
0.500000
 0.02
National University of Singapore (NUS), Singapore
0.500000
 0.02