Photoluminescence characteristics of undoped and terbium chloride doped zinc oxide films deposited by spray pyrolysis

C. Falcony, A. Ortiz, M. García, J. S. Helman

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

The photoluminescence characteristics of undoped and TbCl3-doped zinc oxide films deposited by the spray pyrolysis technique are reported. Undoped films present the characteristic blue-green emission peak at ∼508 nm observed in single-crystal and powder ZnO. The TbCl3-doped films present a luminescence peak at ∼540 nm. The light emission of the doped films decreases with time of exposure of the sample to the excitation light. The phenomenon is interpreted in terms of a simple model in which a competitive process of hole trapping and phototrapping occurs at a radiative recombination center generated by the TbCl3.

Original languageEnglish
Pages (from-to)2378-2381
Number of pages4
JournalJournal of Applied Physics
Volume63
Issue number7
DOIs
StatePublished - 1988
Externally publishedYes

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