A Novel and Versatile
Strategy to Prepare Metal–Organic Molecular Precursor Solutions
and Its Application in Cu(In,Ga)(S,Se)<sub>2</sub> Solar Cells
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Abstract
A novel and versatile metal–organic molecular
precursor-based solution approach and the fabrication of high efficiency
Cu(In,Ga)(S,Se)<sub>2</sub> solar cells are presented. Many types
of metal oxides, hydroxides, and acetylacetonates (acac), such as
Cu<sub>2</sub>O, ZnO, SnO, Sb<sub>2</sub>O<sub>3</sub>, MnO, PbO,
In(OH)<sub>3</sub>, Cd(OH)<sub>2</sub>, Ga(acac)<sub>3</sub>, and
so forth, can be easily dissolved in butyldithiocarbamic acid, forming
thermally degradable metal–organic molecular precursor solutions.
By developing a simple and green ethanol solution-processed route
and tuning the chemical composition of the Cu(In,Ga)(S,Se)<sub>2</sub> thin film, as-fabricated solar cells exhibit an average power conversion
efficiency up to 8.8%
