光学与光电技术, 2018, 16 (3): 51, 网络出版: 2018-07-31  

CdSe/ZnS 量子点/介孔硅复合膜的光致发光谱

Photoluminescence Spectra of CdSe/ZnS Quantum Dot/Mesoporous Silicon Composite Membranes
作者单位
1 新疆轻工职业技术学院, 新疆 乌鲁木齐 830000
2 新疆大学物理科学与技术学院, 新疆 乌鲁木齐 830046
摘要
研究了CdSe/ZnS 量子点与介孔多孔硅偶联吸附结合的复合膜的光致发光谱。实验比较了CdSe/ZnS 量子点与硅复合和与多孔硅复合的光致发光,发现量子点与多孔硅复合的发光比与硅复合有很大的增强。对不同孔径的多孔硅与量子点复合后的光致发光谱的比较发现,由于孔径大小对量子点浸入介孔硅有影响,孔径大浸入的量子点较多所以大孔径多孔硅的发光比小孔径的发光强。量子点与多孔硅复合的光致发光具有量子点荧光发光强度高、稳定和窄带发光的特点,对进一步应用于基于多孔硅器件的光学传感器有重要意义。
Abstract
The photoluminescence spectra of the composite membranes of CdSe/ZnS quantum dots and mesoporous porous silicon are studied. The photoluminescence spectra of the CdSe/ZnS quantum dots composited with the silicon and composited with the porous silicon are compared. The results show that the luminescence intensity of the quantum dots /porous silicon composite membranes is greatly enhanced. Compared the photoluminescence spectra of two quantum dots composited porous silicon samples with different pore diameters, it is found that the photoluminescence spectra intensity of quantum dots composited with porous silicon with large pores are strong due to the little pore size of mesoporous silicon will cause the quantum dots to plug the pores and prevent others from entering the mesoporous membranes, while large pores can combine more quantum dots. The photoluminescence of porous silicon composited with quantum dot membranes is high intensity, stability and narrow-band, which has important significance for further application in optical sensor based on porous silicon devices.

张红梅, 吕长武. CdSe/ZnS 量子点/介孔硅复合膜的光致发光谱[J]. 光学与光电技术, 2018, 16(3): 51. ZHANG Hong-mei, L Chang-wu. Photoluminescence Spectra of CdSe/ZnS Quantum Dot/Mesoporous Silicon Composite Membranes[J]. OPTICS & OPTOELECTRONIC TECHNOLOGY, 2018, 16(3): 51.

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