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Synthesis and optical properties of chromium-doped spinel hollow nanofibers by single-nozzle electrospinning
Dong, Guoping1,2; Xiao, Xiudi3; Peng, Mingying1,2; Ma, Zhijun1,2; Ye, Shi1,2; Chen, Dongdan1,2; Qin, Huijun1,2; Deng, Guangliang1,2; Liang, Qiming1,2; Qiu, Jianrong1,2
2012
发表期刊RSC ADVANCES
卷号2期号:7页码:2773-2782
摘要

Novel spinel hollow nanofibers were synthesized by a convenient single-nozzle electrospinning technique. Based on the composition and morphology results by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM), a 'gas-push' model was proposed to elucidate the formation mechanism of hollow nanofibers during calcination. Photoluminescence (PL) properties of calcined ZnAl2O4: xCr(3+) and MgAl2O4: xCr(3+) nanofibers were investigated systematically. Under an excitation of 400 nm or 530-550 nm ((4)A(2g)-> T-4(1g) or (4)A(2g ->)(4)T(2g) transitions of Cr3+ ions), an emission band at 675-725 nm including a sharp emission line (R-line) at similar to 687 nm with several vibrational sidebands was obtained. Compared with the spectroscopic properties of ZnAl2O4: xCr(3+) nanofibers, the emission band was broadened and the decay lifetime was shortened for MgAl2O4: xCr(3+) nanofibers. By calculation of crystal field strength, the value of D-q/B is estimated to be 3.25 and 2.72 for ZnAl2O4: xCr(3+) and MgAl2O4: xCr(3+) nanofibers, respectively. The difference of crystal field strength gives a good explanation of the spectroscopic and decay evolution between ZnAl2O4: xCr(3+) and MgAl2O4: xCr(3+) nanofibers.

文章类型Article
WOS标题词Science & Technology ; Physical Sciences
DOI10.1039/c2ra00516f
研究领域[WOS]Chemistry
关键词[WOS]LUMINESCENCE PROPERTIES ; SPECTROSCOPY ; CONVERSION ; NANOTUBES ; CR3+ ; NANOCRYSTALS ; FABRICATION ; MICROBELTS ; NANOWIRES ; PHOSPHOR
收录类别SCI
语种英语
WOS类目Chemistry, Multidisciplinary
WOS记录号WOS:000301459900031
引用统计
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/10157
专题中国科学院广州能源研究所
作者单位1.S China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China
2.S China Univ Technol, Inst Opt Commun Mat, Guangzhou 510640, Guangdong, Peoples R China
3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
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Dong, Guoping,Xiao, Xiudi,Peng, Mingying,et al. Synthesis and optical properties of chromium-doped spinel hollow nanofibers by single-nozzle electrospinning[J]. RSC ADVANCES,2012,2(7):2773-2782.
APA Dong, Guoping.,Xiao, Xiudi.,Peng, Mingying.,Ma, Zhijun.,Ye, Shi.,...&Qiu, Jianrong.(2012).Synthesis and optical properties of chromium-doped spinel hollow nanofibers by single-nozzle electrospinning.RSC ADVANCES,2(7),2773-2782.
MLA Dong, Guoping,et al."Synthesis and optical properties of chromium-doped spinel hollow nanofibers by single-nozzle electrospinning".RSC ADVANCES 2.7(2012):2773-2782.
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