Study of Electrical Conductivity and Raman Spectra of CdSe Nanoparticles Irradiated by CO2 Laser
| Authors | S.A. Najim1 , K.M. Muhammed2 |
| Affiliations |
1University of Mosul, Al Majmoaa St., 41002 Mosul, Iraq 2Sumy State University, 40007 Sumy, Ukraine |
| Е-mail | suhaabdullah@uomosul.edu.iq |
| Issue | Volume 17, Year 2025, Number 1 |
| Dates | Received 20 December 2024; revised manuscript received 17 February 2025; published online 27 February 2025 |
| Citation | S.A. Najim, K.M. Muhammed, J. Nano- Electron. Phys. 17 No 1, 01008 (2025) |
| DOI | https://doi.org/10.21272/jnep.17(1).01008 |
| PACS Number(s) | 73.43. − f, 74.25.fc, 78.30. − j |
| Keywords | Electrical conductivity (10) , Raman spectra (6) , CdSe Nanoparticles, Laser (25) , Hall effect (4) . |
| Annotation |
The effect of different times (0, 60, 90, 120 and 180 sec.) CO2 laser irradiation of wavelength (10.6 m) on the electrical resistivity, conductivity, Hall mobility, the electron carrier concentration and Hall coefficient have been investigated on the CdSe nanoparticles. The resistivity has been observed in order of 104 cm which it was increased as increasing radiation laser, on the opposite, the conductivity for an irradiated CdSe was decreased. The values of electrons carriers’ concentration and the charge mobility have been decreased by increasing radiation laser until 180 sec. Hall coefficient of CdSe samples exhibit n-type conductivity. From Raman spectra measurements were found that the bands have been become sharper with an asymmetry around 209 and 410 cm – 1 for CdSe irradiated nanoparticles. High intensity at different radiation times around the frequency 209 cm – 1 and the appearance another band around 255 cm – 1 in case of CdSe irradiation at 180 sec. |
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