Synthesis of Cu2 ZnSnSn4 nanoparticles for solar cell applications

Deepa, KG and Ramamurthy, PC (2018) Synthesis of Cu2 ZnSnSn4 nanoparticles for solar cell applications. In: 4th IEEE International Conference on Emerging Electronics, ICEE 2018, 17-19 December 2018, Bengaluru.

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Abstract

Cu2 ZnSnS4 (CZTS) nanoparticles are synthesized using hot injection method at different durations such as 3, 6, 9 and 12h. With increase in the duration to 6h, Cu3SnS4 phase appeared to be prominent together with CZTS phase. Fixing the deposition time at 3 h, the composition is varied to get a Cu poor sample Cu(Zn+Sn) ratio of 0.78 which is known to be in the optimum range for device fabricaton. These films showed tetragonal kesterite structure of CZTS with traces of wurtzite phase. Band gap varied from 1.55 to 1.3 eV and the nanoparticles have a size of 8 nm. The optimized film had a resistivity of 15 Ømega cm and mobility of 8 cm2/Vs suitable for solar cells.

Item Type:	Conference Paper
Publication:	2018 4th IEEE International Conference on Emerging Electronics, ICEE 2018
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to the Institute of Electrical and Electronics Engineers Inc.
Keywords:	Carrier mobility; Energy gap; Nanoparticles; Solar cells; Ternary alloys; Zinc sulfide, Cu-poor; Deposition time; Hot injection; Kesterites; Raman; Solar-cell applications; Wurtzite phase, Synthesis (chemical)
Department/Centre:	Division of Interdisciplinary Sciences > Interdisciplinary Centre for Energy Research
Date Deposited:	01 Aug 2022 08:45
Last Modified:	01 Aug 2022 08:45
URI:	https://eprints.iisc.ac.in/id/eprint/75077

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