Phase development, microstructure and optical properties of Cu2ZnSnSe4 thin films modified with Pb and Ti

Seung Min Lee, Bhaskar Chandra Mohanty, Yeon Hwa Jo, Deuk Ho Yeon, Yong Soo Cho

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

For the first time we report the growth of Cu2ZnSnSe4 (CZTSe) thin films modified with Pb and Ti, and their structure, morphology and optical properties for possible photovoltaic applications. The polycrystalline films with stannite structure were grown by pulsed laser deposition from the homegrown dense targets. While a small amount of Pb was soluble in CZTSe, a higher concentration of Pb led to the distinct formation of secondary phase of PbSe. For Ti modification, however, no Ti-related secondary phase could be identified and only a minor trace of Cu2Se was detected at a high concentration of Ti. Grain growth and surface morphology of the films were affected in a different manner by the substitution of Pb and Ti. For both Pb and Ti, an initial decrease followed by a large increase in the band gap of the films was observed. The band gap tunability in the range of about 1.2 to 2.1eV by the substitutions is believed to be advantageous for photovoltaic applications.

Original languageEnglish
Pages (from-to)389-393
Number of pages5
JournalSurface and Coatings Technology
Volume231
DOIs
Publication statusPublished - 2013 Sep 25

Fingerprint

Optical properties
optical properties
Thin films
microstructure
Microstructure
Energy gap
Substitution reactions
thin films
substitutes
Pulsed laser deposition
Grain growth
pulsed laser deposition
Surface morphology
stannite
lead selenide

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Lee, Seung Min ; Mohanty, Bhaskar Chandra ; Jo, Yeon Hwa ; Yeon, Deuk Ho ; Cho, Yong Soo. / Phase development, microstructure and optical properties of Cu2ZnSnSe4 thin films modified with Pb and Ti. In: Surface and Coatings Technology. 2013 ; Vol. 231. pp. 389-393.
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Phase development, microstructure and optical properties of Cu2ZnSnSe4 thin films modified with Pb and Ti. / Lee, Seung Min; Mohanty, Bhaskar Chandra; Jo, Yeon Hwa; Yeon, Deuk Ho; Cho, Yong Soo.

In: Surface and Coatings Technology, Vol. 231, 25.09.2013, p. 389-393.

Research output: Contribution to journalArticle

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T1 - Phase development, microstructure and optical properties of Cu2ZnSnSe4 thin films modified with Pb and Ti

AU - Lee, Seung Min

AU - Mohanty, Bhaskar Chandra

AU - Jo, Yeon Hwa

AU - Yeon, Deuk Ho

AU - Cho, Yong Soo

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