Ontology highlight
ABSTRACT:
SUBMITTER: Chen EM
PROVIDER: S-EPMC6009434 | biostudies-literature | 2018 Jun
REPOSITORIES: biostudies-literature
Chemical science 20180515 24
Earth-abundant solar absorber materials with large optical absorption coefficients in the visible enable the fabrication of low-cost high-efficiency single and multi-junction thin-film solar cells. Here, we report a new p-type semiconductor, Cu<sub>4</sub>TiSe<sub>4</sub> (CTSe), featuring indirect (1.15 eV) and direct (1.34 eV) band gaps in the optimal range for solar absorber materials. CTSe crystallizes in a new noncentrosymmetric cubic structure (space group <i>F</i>4[combining macron]3<i>c< ...[more]