Electron-phonon interactions in ce3+-doped yttrium aluminum garnet nanophosphors |
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Authors: | Su L T Tok A I Y Zhao Y Ng N Boey F Y C Woodhead J L Summers C J |
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Affiliation: | School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798. |
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Abstract: | Ce 3+-doped yttrium aluminum garnet nanophosphors with sizes near 30 and 250 nm have been synthesized by using chemical gelation and solvothermal methods, respectively. The size-dependent electron-longitudinal-optical-phonon coupling is investigated by fitting measured photoluminescence spectra within the framework of the Brownian oscillator model. Results show that the coupling strength is in a decreasing order from the bulk material to the nanophosphors of much smaller sizes. |
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