Electron-phonon interactions in ce3+-doped yttrium aluminum garnet nanophosphors.
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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LT
School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798.
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AI
Zhao
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Y
Ng
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Boey
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Woodhead
J L
JL
Summers
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CJ