Correlation between thermally and optically stimulated luminescence in beta-irradiated undoped CVD diamond

✍ Scribed by Chernov, V. ;Piters, T. M. ;Meléndrez, R. ;Preciado-Flores, S. ;May, P. W. ;Barboza-Flores, M.

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 217 KB
• Volume: 206
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200982208

✦ Synopsis

Abstract

The behaviour of afterglow (AG), thermoluminescence (TL) and infrared‐stimulated luminescence (IRSL) in beta‐irradiated chemical vapour deposition diamond is presented. The TL glow curve consists of four peaks with maxima at about 380, 430, 530 and 610 K. The AG decay is fitted by Becquerel's law with exponent close to 1, and correlates well with the thermal emptying of the traps responsible for the 380 K peak. Stimulation with IR light (830 nm) creates intense IRSL and destroys the 380, 430 and 530 K peaks. Illumination with shorter wavelength light also destroys the 610 K peak. The thermal cleaning procedure removes subsequently TL peaks, AG and IRSL. The AG signal decays together with the disappearance of the 380 K peak. The IRSL signal decays continuously with the removal of the 380, 430 and 530 K peaks. Traps responsible for the 610 K peak do not participate in the IRSL process.