Excitation and pre-excitation of glow curves in natural semiconducting diamonds

R. Chen*, S. A.A. Winer, N. Kristianpoller

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The uv excited glow peaks at -150 K and -250 K were investigated. The mainly blue thermoluminescence (TL) peak appearing at 150 K in semiconducting diamonds was found to have also red and infrared components all appearing at the same temperature. Another red peak appearing at 260 K included an infrared component at a somewhat higher temperature. The intensity of this red peak behaved superlinearly with the dose of the 360 nm excitation. It was possible to pre-excite the 250 K blue peak using infrared light when the exciting light was 225 nm; however, this caused a partial bleaching of the 150 K blue peak. The investigation also included pre-excitation at various temperatures, intensity vs dose measurements of pre-excitation, and intensity vs dose measurements at various temperatures. It was found that the red TL peak produced by 500 nm could be excited more efficiently at 180 K than at liquid nitrogen temperature. The energy level model is reviewed in accordance with the new results.

Original languageEnglish
Pages (from-to)4804-4809
Number of pages6
JournalThe Journal of Chemical Physics
DOIs
StatePublished - 1974

Fingerprint

Dive into the research topics of 'Excitation and pre-excitation of glow curves in natural semiconducting diamonds'. Together they form a unique fingerprint.

Cite this