Researchers reveal defect properties in photovoltaic material

As a new member of photovoltaic family, antimony trisulfide (Sb2S3) has the satisfactory bandgap of 1.7eV, benefiting the fabrication of the top absorber layer of tandem solar cells. Due to a special quasi-one-dimensional structure, it shows advantages of less dangling bonds. Based on these advantages, the vacancy defects upon the surface causing the recombination of carriers could be reduced sharply, which helps to solve the photovoltaic problems in solar cells.

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