Improvement of CdS Thin Films Optical Properties and Crystallinity by Laser Radiation
Advanced Materials Research 2015
Artūrs Medvids, Pāvels Onufrijevs, Edvīns Daukšta, Rims Janeliukštis, José Luis Plaza, Sandra Rubio, Ernesto Diéguez, Natalia Berezovska, Igor Dmitruk

A possibility to improve the quality of polycrystalline CdS thin film by Nd:YAG laser irradiation was shown. The CdS thin film was prepared by closed space sublimation method on ITO/glass structure and irradiated by Nd:YAG laser with intensity up to 15 MW/cm2. Several evidences demonstrated the improvement of the optical properties of the CdS thin film after the laser radiation: appearance of photoluminescence band at ~2.530 eV, which is attributed to bound exciton emission; appearance of “spike” in the reflection spectrum at ~2.573 eV between upper and lower polariton branches and the increase intensity of LO phonon line at 305 cm-1 about 3 times in Raman back scattering spectra. Moreover, the increase by 20% of the size of crystals in CdS after laser radiation takes place, which was proved by using X-Ray diffraction analysis.

Atslēgas vārdi
CdS; Closed space sublimation method, Nd:YAG laser

Medvids, A., Onufrijevs, P., Daukšta, E., Janeliukštis, R., Plaza, J., Rubio, S., Diéguez, E., Berezovska, N., Dmitruk, I. Improvement of CdS Thin Films Optical Properties and Crystallinity by Laser Radiation. Advanced Materials Research, 2015, Vol. 1117, 74.-77.lpp. ISSN 1022-6680. e-ISSN 1662-8985. Pieejams: doi:10.4028/

Publikācijas valoda
English (en)
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