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- W2794522667 abstract "Thin films of Zn1-xMnxO (where x = 0.01–0.1), a transparent dilute magnetic semiconductor were grown on a glass substrate using cost-effective chemical spray pyrolysis. All films were polycrystalline and most intense XRD peak changed from (0 0 2) at lower x values to (1 0 0) plane for higher doping level. The deposits possessed the fibrous structure up to x = 0.04, a flowered structure for x = 0.05–0.07, and spheroid structure for x = 0.08–0.10, as revealed by SEM. The visible region, optical transmittance systematically changed from 90% to 55%, with increasing dopant concentration. The optical energy band-gap decreased at higher doping levels attributed to the sp–d exchange interactions. The photoluminescence (PL) spectroscopy revealed the presence of various defects which pronounced with increasing Mn%. As a result of multiple defect induced transitions, the PL spectra spanned the entire visible spectrum. Zn.95Mn.05O films showed CIE values with x = 0.333 and y = 0.322, perfectly matching to that of pure white light, with a “Colour Temperature” of 5475 K. The magnetic measurements confirm that the higher Mn-doped films displayed room-temperature ferromagnetism while less doped films showed weak ferromagnetic effects at 5 K." @default.
- W2794522667 created "2018-04-06" @default.
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- W2794522667 date "2018-07-01" @default.
- W2794522667 modified "2023-10-16" @default.
- W2794522667 title "Defect induced white-light emission from Mn–doped ZnO films and its magnetic properties" @default.
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- W2794522667 doi "https://doi.org/10.1016/j.jlumin.2018.03.054" @default.
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