Papers by Keyword: Semiconductor Alloy

Abstract: Semiconductor alloy films of Cu₂ZnSn_1-xGe_xS₄ (CZTGS) were prepared by deposition and sintering of mixed nanoparticle suspensions composed of Cu₂ZnSnS₄ (CZTS) and Cu₂ZnGeS₄ (CZGS) nanoparticles with 1-dodecanethiol surfactant. Colloidal CZTS and CZGS nanoparticles were synthesized via the liquid-phase route and used without post-processing treatment. The CZTGS films are crystallized in the form of kesterite structures and form an alloy of CZTS and CZGS without an apparent phase separation. The Sn/Ge ratios in the alloy films were finely controlled by tuning a mixing ratio between CZTS and CZGS nanoparticles. The bandgap energy of the CZTGS film systematically increased from 1.6 to 2.1 eV as the Ge-substitution for Sn in the films proceeded, which indicates the potential of the fabrication method in the manufacture of bandgap-tuned multinary semiconductor thin films.

Abstract: This paper concerns the structural and optical properties of the group III-V semiconductor alloy, indium gallium nitride (InGaN). We focus on the reasons of interest to study InGaN. Recent advances regarding the basic understanding (ex. accurate composition determination) and some yet unclear issues (ex. phase separation) regarding this material system, are also briefly discussed. Illustrative results on the light emitting and structural properties are presented.