Journal article

Publication year: 1994

Pages: 321-333

Journal: physica status solidi (b) – basic solid state physics

Volume number: 183

Issue number: 1

ISSN: 0370-1972

DOI Link: https://doi.org/10.1002/pssb.2221830128

Publisher: Wiley

Abstract: 
Luminescence in Hg2Cl2 crystals excited with UV light or X-rays is investigated in the near infra-red (NIR) spectral region up to 1000 nm. Measurements are performed on as-grown samples and on samples previously exposed to UV light or X-rays at RT. Three types of luminescence centres denoted A, B, and C are identified, the luminescence of which depends on the concentration of the photochemical products induced by irradiation of the crystals at RT. Thermoluminescence of Hg2Cl2 is observed for the first time. The glow emission is found in the NIR range, too. It is due to radiative transitions in centres A and B. It is concluded that the NIR luminescence of Hg2Cl2 is not an intrinsic emission but originates from crystal defects. Moreover, luminescence of free excitons in Hg2Cl2 is not observed even at 4.2 K and strong excitation with X-rays or UV light.

Harvard Citation style: BRYKNAR, Z., GRASSER, R., HIMAM, M., KONAKOVA, A. and SCHARMANN, A. (1994) NEAR-INFRARED LUMINESCENCE OF HG2CL3, physica status solidi (b) – basic solid state physics, 183(1), pp. 321-333. https://doi.org/10.1002/pssb.2221830128

APA Citation style: BRYKNAR, Z., GRASSER, R., HIMAM, M., KONAKOVA, A., & SCHARMANN, A. (1994). NEAR-INFRARED LUMINESCENCE OF HG2CL3. physica status solidi (b) – basic solid state physics. 183(1), 321-333. https://doi.org/10.1002/pssb.2221830128