Synthesis and characterization of thermally evaporated Cu2SnSe3 ternary semiconductor

Optical absorption, Raman spectra, and electrical properties of Mn-doped Cu2 SnSe3 semiconductor compound

“…The value of the characteristic energy for this transition where the change of slope occurs is E GI = (0.92 ± 0.04) in reasonable agreement with E G ≈ 0.84 eV reported for Cu 2 SnSe 3 bulk crystals and thin films . It appears that this transition has been mistakenly considered as the fundamental band gap edge of Cu 2 SnSe 3 in several optical absorption studies performed only above 0.6–0.7 eV .…”

“…On the other hand, Cu 2 SnSe 3 , especially when it is doped with foreign elements like Mn, In, Ga, and Zn could be used as a high efficient thermoelectric material. For these reasons, bulk crystals , films , and nanocrystals of Cu 2 SnSe 3 have received considerable attention recently. Hence, a comprehensive understanding of its growth, optical, and electrical properties is essential at present since discrepancies still exist in the literature about them.…”

“…Hence, a comprehensive understanding of its growth, optical, and electrical properties is essential at present since discrepancies still exist in the literature about them. Thus, although it has been established that stoichiometric Cu 2 SnSe 3 crystallizes in a monoclinic structure at low and in a cubic structure at elevated temperatures; much of the bulk materials , films , and nanocrystals crystallize in a cubic or wurtzite structures at room temperature. On the other hand, while first‐principles calculations and ellipsometry studies determine for Cu 2 SnSe 3 a band‐gap energy at room temperature from 0 to 0.45 and 0.49 to 0.68 eV, respectively, a considerable larger value of E G ranging from 0.5 to 1.7 eV was found from absorption spectra .…”

Environment-friendly copper-based chalcogenide thin film solar cells: status and perspectives

“…Several attempts have been made to develop various ternary-CIS compounds as photoactive materials for solar cells. 9,78–82 To form a ternary system, additional transition metals or metalloids (such as Sb, Bi, Sn, In, Fe, Ag, etc. ) need to be added to the binary system (CuS/Se).…”

“…The simple to complex compositions of Cu Ch can be fabricated using various methods, including solution-processed and vacuum techniques with various temperature processes. 6–10 This will give more flexibility to deposit Cu Ch thin film onto various glass substrates, such as glass, plastic, or metal substrates. 4 Cu Ch materials have been used for many optoelectronic device applications, such as photodetectors, light-emitting diodes (LEDs), near-infrared plasmon resonances, biomedical imaging, and biosensors, that can operate in a wide wavelength range from visible to the near-infrared (NIR) due to tuneable bandgaps.…”