2 research outputs found
Raman investigation on thin and thick CdTe films obtained by close spaced vacuum sublimation technique
The CdTe thin and thick films were obtained by the close
spaced vacuum sublimation technique on a glass substrate
under the following growth conditions: the evaporator
temperature was 620 Β°C; and the substrate temperature
was varied in the range from 250 Β°C to 550 Β°C. High
purity CdTe powder was used as a charge for evaporation.
The Raman spectra were measured using TRIAX 320
and TRIAX 550 spectrometers at room temperature. The
488-nm line and 514.5-nm line of an Ar+ laser and a
785-nm diode laser were used as excitation sources. The
signal was collected by the liquid nitrogen cooled chargecoupled-device (CCD) detector. A number of intense
Raman peaks at 140, 167, 190, 271, 332 and 493 cm-1
were observed and were interpreted as TO (140 cm-1),
1LO (167 cm-1), 2LO (332 cm-1), 3LO (493 cm-1) phonon
modes and plasmon-phonon mode (190 cm-1). The presence
of several phonon replicas in the Raman spectra
confirms high crystal quality of the samples.
When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/37061This work is supported by the Ukraine State Agency for the Science, Innovation, and Informatization and by the NRF grant funded by the MEST of Korea (2011-0019204) and by the Ministry of Education and Science of Ukraine
Raman investigation on thin and thick CdTe films obtained by close spaced vacuum sublimation technique
The CdTe thin and thick films were obtained by the close
spaced vacuum sublimation technique on a glass substrate
under the following growth conditions: the evaporator
temperature was 620 Β°C; and the substrate temperature
was varied in the range from 250 Β°C to 550 Β°C. High
purity CdTe powder was used as a charge for evaporation.
The Raman spectra were measured using TRIAX 320
and TRIAX 550 spectrometers at room temperature. The
488-nm line and 514.5-nm line of an Ar+ laser and a
785-nm diode laser were used as excitation sources. The
signal was collected by the liquid nitrogen cooled chargecoupled-device (CCD) detector. A number of intense
Raman peaks at 140, 167, 190, 271, 332 and 493 cm-1
were observed and were interpreted as TO (140 cm-1),
1LO (167 cm-1), 2LO (332 cm-1), 3LO (493 cm-1) phonon
modes and plasmon-phonon mode (190 cm-1). The presence
of several phonon replicas in the Raman spectra
confirms high crystal quality of the samples.
When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/37061This work is supported by the Ukraine State Agency for the Science, Innovation, and Informatization and by the NRF grant funded by the MEST of Korea (2011-0019204) and by the Ministry of Education and Science of Ukraine