نویسندگان
1 گروه فیزیک، دانشگاه ولیعصر (عج). رفسنجان
2 گروه فیزیک، دانشگاه ولیعصر(عج)، رفسنجان
3 گروه فیزیک، دانشگاه ولیعصر )عج(، رفسنجان
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
In the present work, Cu-doped ZnSe Nanocrystals NCs were synthesized by a simple photochemical method. XRD and TEM analysis demonstrated zinc blende phase NCs with an average size of around 3 nm. UV-Vis analysis showed decreasing the band gap of ZnSe NCs from 3.80 to 3.45 eV for 5 to 15 min illumination time. Photoluminescence spectra of ZnSe NCs showed a broad emission with two peaks located at 380 and 490 nm related to excitonic and trap states emission, respectively. For ZnSe:Cu NCs, excitonic emission was decreased and PL intensity of trap states emission increased and for 10 min illumination, excitonic emission quenched completely and trap states emission reached to its maximum value.
کلیدواژهها [English]