【摘 要】
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Visible photoluminescence (PL) has been observed from rare earth (Tm, Sm and Dy)-doped AlN films grown by radio-frequency magnetron reactive sputtering. X-ray d
【机 构】
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Department of Materials Science and Engineering, Shenzhen University and Shenzhen Key Laboratory of
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Visible photoluminescence (PL) has been observed from rare earth (Tm, Sm and Dy)-doped AlN films grown by radio-frequency magnetron reactive sputtering. X-ray diffraction indicates that the films are c-axis-oriented hexagonal wurtzite type structure with an average crystal size of about 80-110 nm. Room-temperature PL spectra indicate that the blue emission is due to the transition of 1D2 to 3F4 and 1G4 to 3H6 intra 4f electron of Tm3+, the yellow emissions of AlN:Sm are due to 4G5/2 to the 6HJ (J = 5/2, 7/2, 9/2, 11/2) and the reddish emissions of AlN:Dy correspond to the 4F9/2 to 6HJ (J = 15/2, 13/2, 11/2 and 9/2) and 6F11/2 transitions.
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