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Recent Progress on Cu 2 BaSn(S x Se 1– x ) 4 : From Material to Solar Cell Applications
Author(s) -
Luo Haitian,
Zhang Yi,
Wang Wenjing,
Gu Hongwei,
Li Hui
Publication year - 2020
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.202000060
Subject(s) - materials science , fabrication , solar cell , open circuit voltage , photovoltaics , optoelectronics , nanotechnology , photovoltaic system , voltage , medicine , physics , electrical engineering , alternative medicine , pathology , engineering , quantum mechanics
Thin film solar cells show great potential applications in building‐integrated photovoltaics (BIPV) and portable devices. Among these thin film solar cells, Cu 2 BaSn(S x Se 1– x ) 4 solar cells derived from Cu 2 ZnSn(S x Se 1– x ) 4 solar cells have attracted intense research interests recently because of their high theoretical PCE of ap;31%, easy tunability of band gaps ( E g = 1.28–1.79 eV), large optical absorption coefficient ( α > 10 4 cm −1 ), environment‐friendly composition, low materials, and fabrication cost. Importantly, Cu 2 BaSn(S x Se 1– x ) 4 solar cells are expected to have low open‐circuit voltage deficit, leading to high open‐circuit voltage and PCEs. In fact, since their initial development in 2016, the maximum PCE of Cu 2 BaSn(S x Se 1– x ) 4 solar cells has surpassed 5% via adjustment of the fabrication methods and material properties, optimization of the device structures, and so forth. Here, a review of the recent progress of Cu 2 BaSn(S x Se 1– x ) 4 solar cells is presented, including properties of Cu 2 BaSn(S x Se 1– x ) 4 , material and device fabrication methods, device performances, potential applications, as well as the bulk and interface recombination. In addition, other solar cells which are similar with the Cu 2 BaSn(S x Se 1– x ) 4 solar cells are also discussed. Finally, according to these discussions, prospect for PCEs improvement is given to accelerate their development.