@article{oai:soar-ir.repo.nii.ac.jp:00018434, author = {Momose, Noritaka and Myo, Than Htay and Sakurai, Kazuki and Iwano, Shota and Hashimoto, Yoshio and Ito, Kentaro}, issue = {8}, journal = {APPLIED PHYSICS EXPRESS}, month = {}, note = {A Cu2ZnSn(SxSe1-x)(4) (CZTSSe) solid alloy was prepared by reacting a metallic precursor with sulfur and selenium in a closed tube simultaneously. It was confirmed that the CZTSSe alloy could be synthesized over the whole compositional range and its lattice transformation was in good agreement with Vegard's law. The crystal grain size and electrical conductivity were enhanced when the selenium content was increased. In a CdS/CZTSSe heterojunction solar cell, the photovoltaic efficiency was improved due to the enhancement of the short-circuit current in accordance with the narrowing of the optical bandgap of the CZTSSe absorber. (c) 2012 The Japan Society of Applied Physics, Article, APPLIED PHYSICS EXPRESS. 5(8): 81201 (2012)}, title = {Cu2ZnSn(SxSe1-x)4 Thin-Film Solar Cells Utilizing Simultaneous Reaction of a Metallic Precursor with Elemental Sulfur and Selenium Vapor Sources}, volume = {5}, year = {2012} }