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Effect of starting-solution pH on the growth of Cu2ZnSnS4thin films deposited by spray pyrolysis

✍ Scribed by Kumar, Y. B. Kishore ;Babu, G. Suresh ;Bhaskar, P. Uday ;Raja, V. Sundara

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
469 KB
Volume
206
Category
Article
ISSN
0031-8965

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✦ Synopsis

Abstract

Cu~2~ZnSnS~4~ (CZTS) thin films, a potential solar‐cell absorber material, have been successfully deposited onto soda lime glass held at a substrate temperature of 643 K. The effect of starting‐solution pH on the properties of deposited films is investigated. The solution pH was varied in the range 3.0 to 5.5. The films were characterized by studying their composition, structural, optical and electrical properties. X‐ray diffraction studies revealed that polycrystalline CZTS films with kesterite structure could be obtained from a solution with pH = 3.0. However, the films are nonstoichiometric and may contain binary phases in the amorphous form. Films deposited from a solution with pH = 4.5 contain binary phases in addition to CZTS. The lattice parameters of CZTS films are found to be a = 0.542 nm and c = 1.085 nm. The optical bandgap of these films is 1.45 eV and the optical absorption coefficient is >10^4^ cm^–1^. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Effect of copper salt and thiourea concentrations on the formation of Cu2ZnSnS4thin films by spray pyrolysis
✍ Kumar, Y.B. Kishore ;Bhaskar, P. Uday ;Babu, G. Suresh ;Raja, V. Sundara 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 679 KB

## Abstract Thin films of Cu~2~ZnSnS~4~ (CZTS), a potential candidate for absorber layer in thin film heterojunction solar cell, have been deposited by spray pyrolysis technique onto soda‐lime glass substrates held at a substrate temperature (__T__~s~) of 643 K. The effect of copper salt and thiour