Luminescence efficiency enhancement in laser soaked hydrogenated amorphous carbon films

M. Koós, I. Pócsik, L. Tóth

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

An unexpected effect of laser soaking was observed on the properties of annealed a-C:H films. The photoluminescence (PL) intensity was increased up to six times and, the spectrum was blue shifted in samples exposed to an unfocused Ar+ laser beam. The time dependence of the PL intensity increase was found to be exponential up to saturation with characteristic times around 103 s. The observed changes were influenced by illumination intensity and sample properties. These results are corroborated by a PL mechanism when excitation and recombination take place on π-bonded clusters.

Original languageEnglish
Pages (from-to)2245-2247
Number of pages3
JournalApplied Physics Letters
Volume65
Issue number18
DOIs
Publication statusPublished - Dec 1 1994

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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