期刊
JOURNAL OF MATERIALS SCIENCE
卷 44, 期 10, 页码 2560-2565出版社
SPRINGER
DOI: 10.1007/s10853-009-3334-x
关键词
-
资金
- European Commission [HPRI-CT-1999-00040]
We report on spectroscopic study of pyrolytic hBN (pBN) by means of time- and energy-resolved photoluminescence methods. A high purity pBN samples (though low crystallinity) allow complementary information about excited states involved into the luminescence process. We affirm our recent conclusions about the impurity-related nature of most of fluorescence bands in microcrystalline hBN. In addition, a broad band centred at 3.7 eV previously not considered because of its superposition with an intense structured impurity emission is attributed to the radiative recombination of deep DAPs.
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