What is it about?
Using deep level transient spectroscopy to assess the defect content of antimony selenide (Sb2Se3) solar cells and single crystals.
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Why is it important?
Antimony selenide is an emerging solar cell material of particular interest. This work shows that the material has a number of significant defects which are potentially harmful to performance. Interestingly the single crystals and polycrystalline thin films show near identical defect content, implying grain boundaries in the material do not generate defects.
Perspectives
This article was a long time in the making despite its concise nature. We first observed the defects in thin films in around 2017 but took another two years to resolve the doping type of the material, primarily through the development of a single crystal growth process.
Jonathan Major
University of Liverpool
Read the Original
This page is a summary of: Defect properties of Sb2Se3 thin film solar cells and bulk crystals, Applied Physics Letters, June 2020, American Institute of Physics, DOI: 10.1063/5.0012697.
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