Structural, optical and electrical properties of ZnTe thin films electrochemically deposited from a citric acid aqueous solution

Takahiro Ishizaki, Takeshi Ohtomo, Akio Fuwa

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

ZnTe thin films were electrodeposited onto Au-coated Cu substrates from an electrolytic solution containing ZnSO4, TeO2, citric acid and sodium citrate, and the dependence of structure, composition and surface morphology on the solution's Zn concentration were investigated. Results of examinations for resistivity and optical absorption demonstrated, respectively, that as the Zn concentration in the electrolyte was reduced over the range of 5-50 mmol dm-3, the resistivity of the films obtained continuously decreased and their band gap increased. Quantitative analysis of energy dispersive x-ray analysis and inductively coupled plasma results indicated that the composition ratio (Zn:Te) was approximately stoichiometric under all conditions in this study. X-ray diffraction results revealed that all the ZnTe thin films obtained showed a preferred (111) orientation with cubic structure. ZnTe thin films we transferred onto nonconductive epoxy resin also showed the same structure.

Original languageEnglish
Pages (from-to)255-260
Number of pages6
JournalJournal of Physics D: Applied Physics
Volume37
Issue number2
DOIs
Publication statusPublished - 2004 Jan 21
Externally publishedYes

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citric acid
Citric acid
Citric Acid
Structural properties
Electric properties
Optical properties
electrical properties
aqueous solutions
optical properties
Thin films
thin films
Chemical analysis
Epoxy Resins
x ray analysis
electrical resistivity
Inductively coupled plasma
epoxy resins
citrates
Epoxy resins
Light absorption

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Structural, optical and electrical properties of ZnTe thin films electrochemically deposited from a citric acid aqueous solution. / Ishizaki, Takahiro; Ohtomo, Takeshi; Fuwa, Akio.

In: Journal of Physics D: Applied Physics, Vol. 37, No. 2, 21.01.2004, p. 255-260.

Research output: Contribution to journalArticle

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