najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2016-7-3-509-512najo-1266Research ArticlePAPERS, PRESENTED AT NANO-2015PAPERS, PRESENTED AT NANO-2015Effect of excess selenium in the formation of Cu2Zn1.5Sn1.2(S0.9+Se0.1)4 alloys for solar cell applicationsEffect of excess selenium in the formation of Cu2Zn1.5Sn1.2(S0.9+Se0.1)4 alloys for solar cell applicationsSripanChinnaiyahSripanChinnaiyah

Pondicherry

Pondicherry

Srimannano2007@gmail.comViswanathAnnamraju KasiViswanathAnnamraju Kasi

Pondicherry

Pondicherry

vkasi@hotmail.comGanesanR.GanesanR.

Department of Physics.

Bangalore, Karnataka

Department of Physics.

Bangalore, Karnataka

rajamanickam.ganesan@gmail.comCentre for Nanoscience and Technology, Pondicherry UniversityИндияCentre for Nanoscience and Technology, Pondicherry UniversityIndiaIndian Institute of ScienceИндияIndian Institute of ScienceIndia20162008202573509512Copyright © Sripan C., Viswanath A., Ganesan R., 20252025Sripan C., Viswanath A., Ganesan R.Sripan C., Viswanath A., Ganesan R.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/1266

Copper zinc tin sulfide/selenide Cu2ZnSn(S, Se)4 (CZTSSe) is an alternative promising material for solar cell applications. It exhibits a high optical absorbance and tunable band gap. We have investigated the effect of excess selenium on the formation of CZTSSe phase which was prepared by the thermal melt method. The CZTSSe alloys were characterized by X-ray diffraction (XRD), Raman spectroscopy and UV-VIS spectroscopy. The crystallographic structure and phase were confirmed by X-ray diffraction and Raman spectroscopic techniques. In Raman spectroscopy, we found that the phase shifts from 327 cm−1 to 338 cm−1 when the selenium content excess is 5 %. In optical studies, a band gap for the CZTSSe alloys of about 1.43 eV to 1.44 eV was observed.

Copper zinc tin sulfide/selenide Cu2ZnSn(S, Se)4 (CZTSSe) is an alternative promising material for solar cell applications. It exhibits a high optical absorbance and tunable band gap. We have investigated the effect of excess selenium on the formation of CZTSSe phase which was prepared by the thermal melt method. The CZTSSe alloys were characterized by X-ray diffraction (XRD), Raman spectroscopy and UV-VIS spectroscopy. The crystallographic structure and phase were confirmed by X-ray diffraction and Raman spectroscopic techniques. In Raman spectroscopy, we found that the phase shifts from 327 cm−1 to 338 cm−1 when the selenium content excess is 5 %. In optical studies, a band gap for the CZTSSe alloys of about 1.43 eV to 1.44 eV was observed.

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The authors declare that there are no conflicts of interest present.