Publication date: 6th November 2020
In the last few years, the interest and research on new thin film inorganic materials for photovoltaic (PV) applications have largely increased. There are two main motivations for this: i. the necessity to substitute scarce and/or expensive materials currently used in the thin film photovoltaic industry (such as In, Ga or Te); and ii. the necessity of materials with new properties that are required for non-conventional PV applications (flexible, transparent). In this context, kesterite type semiconductors, including Cu2ZnSn(S,Se)4 (CZTSSe), Cu2ZnSnS4 (CZTS), and Cu2ZnSnSe4 (CZTSe) are recognized as one of the most relevant and promising thin film photovoltaic technologies.
In the first part of the presentation, the most relevant progresses achieved for kesterite in the last years will be reviewed, focusing on the recent strategies followed to improve their efficiency, that are mainly based on the partial cationic and anionic substitution including Cu by Ag, Zn by Cd, Mn and Mg, Sn by Ge, extended to the S, Se and Te substitutions as possible anions in the structure. In the second part of the presentation, other relevant emerging photovoltaic materials will be discussed, including oxides, pnictides and halides, giving insights about the most promising ones for different PV applications.
H2020 Programme project SENSATE (H2020-ERC-CoG-2019-866018)
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