Effects of Ag contents and deposition temperatures on the electrical and optical behaviors of Ag-doped Cu2O thin films

C. C. Tseng, J. H. Hsieh, S. J. Liu, W. Wu

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Cu2O-Ag thin films were co-deposited by reactive sputtering on glass substrates. During deposition, Ag contents and deposited temperatures were varied. After deposition, a UV-VIS-NIR photometer and a Hall measurement system were used to characterize the optical and electrical properties of these films. The results showed that the Cu2O-Ag thin films had a decreased optical transmittance with the increase of Ag contents. The resistivity was also decreased, which is most likely due to the formation of Ag phase. Through the measurement of photo-induced conductivity, it was found that, when Ag concentration was at 4 at.%, the film had the highest increase in conductivity under light irradiation. This is due to the co-existence of Ag2O and Cu2O. However, when deposited at a temperature higher than room temperature, the photo-induced conductivity of this film became less obvious, apparently due to the dissociation of Ag2O. The results of Photoluminescence (PL) measurement confirmed that the Cu2O-Ag(4 at.%) sample might produce more electron-hole pairs than other samples, which caused the increase of conductivity.

Original languageEnglish
Pages (from-to)1407-1410
Number of pages4
JournalThin Solid Films
Volume518
Issue number5
DOIs
Publication statusPublished - 2009 Dec 31

Fingerprint

Thin films
conductivity
thin films
Photometers
Reactive sputtering
Opacity
Temperature
temperature
Photoluminescence
Electric properties
Optical properties
Irradiation
photometers
Glass
transmittance
Electrons
sputtering
electrical properties
dissociation
Substrates

Keywords

  • Co-sputtering
  • CuO-Ag thin films
  • Opto-electronic properties

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

Effects of Ag contents and deposition temperatures on the electrical and optical behaviors of Ag-doped Cu2O thin films. / Tseng, C. C.; Hsieh, J. H.; Liu, S. J.; Wu, W.

In: Thin Solid Films, Vol. 518, No. 5, 31.12.2009, p. 1407-1410.

Research output: Contribution to journalArticle

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