Effects of Stacking Sequences in the Formation of CZTS Thin Film Using Electron Beam Evaporation

Kesavan, P K Pidugu and Chaudhari, Sushmita and Dey, Suhash Ranjan (2016) Effects of Stacking Sequences in the Formation of CZTS Thin Film Using Electron Beam Evaporation. In: 32nd European Photovoltaic Solar Energy Conference and Exhibition, 20-24 June 2016, Munich, Germany.

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Abstract

This study investigated the influence of stacking sequences in the formation of deleterious secondary phases which has degrading effects on the performance of Cu2ZnSnS4 (CZTS) thin film solar cells. Various stacking of absorber layer precursors for e.g. Zn/Sn/Cu, Sn/Zn/Cu, Cu/Zn/Sn/Cu and Cu/Sn/Zn/Cu are prepared on glass substrates without heating using electron beam evaporation of elemental metallic precursors. Interdiffusion of metals is confirmed from the XRD results. Further, the precursor films are sulfurized at 500°C for 1 hr in the presence of elemental sulfur powder having N2 as the carrier gas. The effect of ramping rates on the formation of secondary phases are investigated using XRD and Raman spectroscopy. It is found that precursor stacking sequence of Sn/Zn/Cu sulfurized at a rate of 1°C/min and Cu/Sn/Zn/Cu at a sulfurization ramping rate of 1°C/min are the optimum condition for the formation of phase pure CZTS thin films.

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IITH Creators:	IITH Creators ORCiD Dey, Suhash Ranjan http://orcid.org/0000-0002-5148-9534
Item Type:	Conference or Workshop Item (Paper)
Subjects:	Materials Engineering > Materials engineering
Divisions:	Department of Material Science Engineering
Depositing User:	Team Library
Date Deposited:	04 Jul 2019 10:15
Last Modified:	04 Jul 2019 10:15
URI:	http://raiithold.iith.ac.in/id/eprint/5624
Publisher URL:	http://doi.org/10.4229/EUPVSEC20162016-3CV.2.32
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