Single step electrosynthesis of Cu2ZnSnS4 (CZTS) thin films for solar cell application |
| |
Authors: | S.M. Pawar B.S. Pawar A.V. Moholkar J.H. Yun S.S. Kolekar |
| |
Affiliation: | a Department of Materials Science and Engineering, Chonnam National University, 300 Yongbong-Dong, Puk-Gu, Gwangju 500-757, South Korea b Analytical Chemistry Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416 004, India c Photovoltaic Research Group, Korea Institute of Energy Research, 71-2 Jang-Dong, Yuseong-Gu, Daejeon 305-343, South Korea |
| |
Abstract: | The Cu2ZnSnS4 (CZTS) thin films have been electrodeposited onto the Mo coated and ITO glass substrates, in potentiostatic mode at room temperature. The deposition mechanism of the CZTS thin film has been studied using electrochemical techniques like cyclic voltammetery. For the synthesis of these CZTS films, tri-sodium citrate and tartaric acid were used as complexing agents in precursor solution. The structural, morphological, compositional, and optical properties of the CZTS thin films have been studied using X-ray diffraction (XRD), scanning electron microscopy (SEM), EDAX and optical absorption techniques respectively. These properties are found to be strongly dependent on the post-annealing treatment. The polycrystalline CZTS thin films with kieserite crystal structure have been obtained after annealing as-deposited thin films at 550 in Ar atmosphere for 1 h. The electrosynthesized CZTS film exhibits a quite smooth, uniform and dense topography. EDAX study reveals that the deposited thin films are nearly stoichiometric. The direct band gap energy for the CZTS thin films is found to be about 1.50 eV. The photoelectrochemical (PEC) characterization showed that the annealed CZTS thin films are photoactive. |
| |
Keywords: | Cu2ZnSnS4 thin films Single step electrodeposition Cyclic voltammetry X-ray diffraction Scanning electron microscopy Optical absorption Photoelectrochemical (PEC) characterization |
本文献已被 ScienceDirect 等数据库收录! |
|