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Publikācija: Improvement of CdS Crystallinity by Nd:YAG Laser Radiation

Publication Type Full-text conference paper published in conference proceedings indexed in SCOPUS or WOS database
Funding for basic activity Unknown
Defending: ,
Publication language English (en)
Title in original language Improvement of CdS Crystallinity by Nd:YAG Laser Radiation
Field of research 1. Natural sciences
Sub-field of research 1.3 Physical sciences
Authors Artūrs Medvids
Pāvels Onufrijevs
Rims Janeliukštis
Edvīns Daukšta
José Luis Plaza
Sandra Rubio
Ernesto Diéguez
Natalija Berezovska
Igor Dmitruk
Keywords CdS, Crystallinity, Nd:YAG Laser
Abstract 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 the 532 nm wavelength laser radiation with intensity up to 15 MW/cm2. Several evidences demonstrated the improvement of the cryatallinity of the CdS thin film after the laser radiation. The improvement was proved by optical methods: the appearance of photoluminescence band at ~2.520 eV, which is attributed to free exciton emission; the appearance of “spike” in the reflection spectrum at ~2.573 eV between upper and lower polariton branches and the increase of the 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 CdS crystals after laser radiation takes place, which was proved by X-Ray diffraction pattern and using the Scherrer equation.
Reference Medvids, A., Onufrijevs, P., Janeliukštis, R., Daukšta, E., Plaza, J., Rubio, S., Diéguez, E., Berezovska, N., Dmitruk, I. Improvement of CdS Crystallinity by Nd:YAG Laser Radiation. In: 5th International Conference on Radiation Interaction with Materials: Fundamentals and Applications: Program and Materials, Lithuania, Kaunas, 12-15 May, 2014. Kaunas: Kaunas University of Technology, 2014, pp.83-86.
ID 19472