کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1527927 | 1511864 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure and optical properties of nanocrystalline GaN embedded in silica matrix
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Microstructure and optical properties of nanocrystalline GaN embedded in silica matrix Microstructure and optical properties of nanocrystalline GaN embedded in silica matrix](/preview/png/1527927.png)
چکیده انگلیسی
Monodispersed and high-density nanocrystalline GaN particles were in situ synthesized in silica xerogel by a sol-gel method. Microstructure and morphology analyses reveal that as-prepared GaN crystallites were hexagonal phase. It is well dispersed in silica matrix with uniformed size, and its average size varied from 3 to 8Â nm with prolonging the nitridation period and enhancing the reaction temperature. The FTIR spectrum shows a GaN bond stretch present at 600Â cmâ1, which indicated that the element Ga atom dominantly existed with GaN bond in the samples. Room temperature photoluminescence (PL) exhibited a non-size-dependence near band-edge emission of GaN at 390Â nm and another PL emission peak about 565, 570, 580Â nm with different intensity in three samples, respectively. The possible reason for the PL results was proposed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 96, Issues 2â3, 10 April 2006, Pages 296-300
Journal: Materials Chemistry and Physics - Volume 96, Issues 2â3, 10 April 2006, Pages 296-300
نویسندگان
Hailin Qiu, Chuanbao Cao, Dazhi Wang, Hesun Zhu,