Effect of low energy ion irradiation on CdTe crystals: Luminescence enhancement

Journal Article · Wed Dec 15 00:00:00 EST 2010 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3452386· OSTI ID:21537985

Olvera, J; Plaza, J L; Dios, S de; Dieguez, E ^[1]; Martinez, O; Avella, M ^[2]

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1. Departamento de Fisica de Materiales, Laboratorio de Crecimiento de Cristales, Facultad de Ciencias, Universidad Autonoma de Madrid, Cantoblanco, 28049 Madrid (Spain)
2. Departamento Fisica Materia Condensada, GdS-Optronlab Group, Universidad de Valladolid, Edificio I-D, Paseo de Belen 1, 47011 Valladolid (Spain)

In this work we show that low energy ion sputtering is a very efficient technique as a cleaning process for CdTe substrates. We demonstrate, by using several techniques like grazing-angle x-ray diffraction, cathodoluminescence, microluminescence, and micro-Raman spectroscopy that the luminescent properties of CdTe substrates can be very much increased when CdTe surfaces are irradiated with low energy Argon ions. We postulate that this enhancement is mainly due to the removal of surface damage induced by the cutting and polishing processes. The formation of a low density of nonluminescent aggregates after the sputtering process has also been observed.

• OSTI ID: 21537985
• Journal Information: Journal of Applied Physics, Vol. 108, Issue 12; Other Information: DOI: 10.1063/1.3452386; (c) 2010 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
ARGON IONS
CADMIUM TELLURIDES
CATHODOLUMINESCENCE
CRYSTALS
DENSITY
ION BEAMS
IRRADIATION
LUMINESCENCE
POLISHING
RAMAN SPECTRA
RAMAN SPECTROSCOPY
SEMICONDUCTOR MATERIALS
SPUTTERING
SUBSTRATES
SURFACES
X-RAY DIFFRACTION
BEAMS
CADMIUM COMPOUNDS
CHALCOGENIDES
CHARGED PARTICLES
COHERENT SCATTERING
DIFFRACTION
EMISSION
IONS
LASER SPECTROSCOPY
MATERIALS
PHOTON EMISSION
PHYSICAL PROPERTIES
SCATTERING
SPECTRA
SPECTROSCOPY
SURFACE FINISHING
TELLURIDES
TELLURIUM COMPOUNDS