Effects of the Thermal Annealing with CdCl2 on the Optical Properties of CdS Thin Films Grown by Radio-Frequency Planar Magnetron Sputtering

M.R. Espinosa-Rosas; J.R. Aguilar-Hernández; H. Hernández-Contreras; M.A. Hernández-Pérez; G.S. Contreras-Puente; M. Cárdenas-García; B. Ortega-Nájera

doi:10.4028/www.scientific.net/MSF.691.145

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HomeMaterials Science ForumMaterials Science Forum Vol. 691Effects of the Thermal Annealing with CdCl2 on the...

Effects of the Thermal Annealing with CdCl₂ on the Optical Properties of CdS Thin Films Grown by Radio-Frequency Planar Magnetron Sputtering

Abstract:

We present in this work some results concerning the effects of the thermal annealing with CdCl₂ on the optical properties of CdS thin films grown by radio-frequency planar magnetron sputtering technique, under optimized growth parameters: gas pressure, atmosphere, substrate temperature, power of plasma, etc. An improvement of the optical properties has been observed, mainly the presence of radiative emission (luminescence) at room temperature. This fact allowed us to carry out a deep study of the photoluminescence (PL) properties of the CdS films, in the range of temperature 10≤ T ≤ 300 K. Radiative emission at the high energy side has been observed and related to exitonic processes. Temperature quenching experiments gave rise to the calculation of the activation energies for each one of the radiative emissions (PL bands).

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Periodical:

Materials Science Forum (Volume 691)

Pages:

145-150

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.691.145

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Online since:

June 2011

Authors:

M.R. Espinosa-Rosas, J.R. Aguilar-Hernández, H. Hernández-Contreras, M.A. Hernández-Pérez, G.S. Contreras-Puente, M. Cárdenas-García, B. Ortega-Nájera

Keywords:

Cadmium Chloride, Cadmium Sulfide, Photoluminescence (PL), Sputtering

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