YANG Yan-min, LI Zi-qiang, JIAO Fu-yun, LIU Yun-feng, LI Zhi-qiang, SU Hong-xin, YANG Zhi-ping. Synthesis and Photoluminescence Properties of Cr<sup>3+</sup> Doped Aluminium Nitride[J]. Chinese Journal of Luminescence, 2012,(5): 504-508
YANG Yan-min, LI Zi-qiang, JIAO Fu-yun, LIU Yun-feng, LI Zhi-qiang, SU Hong-xin, YANG Zhi-ping. Synthesis and Photoluminescence Properties of Cr<sup>3+</sup> Doped Aluminium Nitride[J]. Chinese Journal of Luminescence, 2012,(5): 504-508 DOI: 10.3788/fgxb20123305.0504.
Synthesis and Photoluminescence Properties of Cr3+ Doped Aluminium Nitride
Aluminium nitride and chromium nitride were synthesized by high temperature solid state method with aluminium
chromium and high purity nitrogen. Two types of methods were used to obtain Cr
3+
-doped AlN: one is to nitride mixtures of aluminium and chromium
the other is to heat aluminium nitride and chromium nitride at 1 400 ℃ for 3 h under nitrogen. X-ray diffraction analyzer was used to measure the crystal structure of obtained samples. The excitation and emission spectra of the samples were measured by spectrometer. The obtained data showed that the excitation and emission spectra of Cr
3+
∶AlN obtained by two methods are similar
two broad excited bands
peak at 400 nm and 500 nm
and the emission peak at 696 nm
while the intensity of the latter was higher than that of the former due to higher annealing temperature. According to the excitation and emission spectra of Cr
3+
∶AlN
D
q
/
B
and the energy levels of Cr
3+
ion in AlN were given. The obtained data showed that the emission of Cr
3+
at 696 nm came from the first excited state
2
E
which is similar to that of Cr
3+
in Al
2
O
3
host.
关键词
Keywords
references
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