TY - GEN
T1 - Near white light emission from ZnO nanostructures
AU - Brahma, Sanjaya
AU - Jaiswal, P.
AU - Nanda, K. K.
AU - Kukreja, L. M.
AU - Shivashankar, S. A.
N1 - Funding Information:
The authors acknowledge the Institute of Nanoscience Initiative (INI), a National Facility for Electron Microscopy, for support in the SEM and TEM analysis reported in this study. One of the authors (S. Brahma) thanks Council of Scientific and Industrial Research (CSIR) for award of a research associateship.
PY - 2011
Y1 - 2011
N2 - We report white light emission from ZnO nanostructures in powder form, prepared by microwave irradiation-assisted chemical synthesis, in the presence of a structure directing agent. Determination of their crystallinity, actual shape, and orientation was made using X-ray diffraction, scanning electron microscopy (SEM) and transmission electron microscopy (TEM), and optical properties have been studied through photoluminescence (PL), measured using He-Cd laser (325 nm) as the excitation source. There is a noticeable variation in the luminescence correlated with variation of process parameters, such as microwave power, duration of irradiation, and the type/concentration of surfactants. The CIE (Commission Internationale l'Eclairage) diagram shows that the luminescence lies in yellow region of the color space. As the luminescence from the powder of ZnO lies in the yellow region, it is possible to produce white light from the powder of ZnO by using a blue laser as the excitation source.
AB - We report white light emission from ZnO nanostructures in powder form, prepared by microwave irradiation-assisted chemical synthesis, in the presence of a structure directing agent. Determination of their crystallinity, actual shape, and orientation was made using X-ray diffraction, scanning electron microscopy (SEM) and transmission electron microscopy (TEM), and optical properties have been studied through photoluminescence (PL), measured using He-Cd laser (325 nm) as the excitation source. There is a noticeable variation in the luminescence correlated with variation of process parameters, such as microwave power, duration of irradiation, and the type/concentration of surfactants. The CIE (Commission Internationale l'Eclairage) diagram shows that the luminescence lies in yellow region of the color space. As the luminescence from the powder of ZnO lies in the yellow region, it is possible to produce white light from the powder of ZnO by using a blue laser as the excitation source.
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U2 - 10.1557/opl.2011.401
DO - 10.1557/opl.2011.401
M3 - Conference contribution
AN - SCOPUS:80053202229
SN - 9781605112800
T3 - Materials Research Society Symposium Proceedings
SP - 15
EP - 20
BT - Nanomaterials Integration for Electronics, Energy and Sensing
T2 - 2010 MRS Fall Meeting
Y2 - 29 November 2010 through 3 December 2010
ER -