کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1785863 1023397 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structural and optical characterization of wurtzite type ZnS
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Structural and optical characterization of wurtzite type ZnS
چکیده انگلیسی


• ZnS nanofilms were deposited by RF magnetron sputtering on (100) GaAs substrates.
• It has investigated the substrate temperature effect on structure properties of ZnS.
• The ZnS grain size varied from 8.15 to 31.95 nm as a function of the grown temperature.
• ZnS nanofilms have good optical properties as was obtained by 300 K photoluminescence.

ZnS films were grown on (001) GaAs substrates at different temperatures by RF magnetron sputtering. The ZnS chemical stoichiometry was determined by Energy-dispersive X-ray spectroscopy (EDS), besides it allowed to find the residual impurities, mainly oxygen. The X-ray diffraction (XRD) analysis and Raman scattering reveal that ZnS deposited thin films showed hexagonal wurtzite crystalline phase. The films average crystallite size range was from 8.15 to 31.95 nm, which was determined using the Debye–Scherrer equation for the peak W(101). Besides an experimental study of first- and second-order Raman scattering of ZnS films is made. An energy level diagram involving oxygen traps and interstitial sulphur ions is used to explain the origin of the radiative transitions observed in the room temperature photoluminescence (PL) spectra.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 15, Issue 2, February 2015, Pages 103–109
نویسندگان
, , , , ,