Photoluminescence of SiO2/SiNx/SiO2/Si Structures with Off-Stoichiometric Silicon Nitride Layers

被引:0
|
作者
Romanov, I. A. [1 ]
Vlasukova, L. A. [1 ]
Parkhomenko, I. N. [1 ]
Komarov, F. F. [3 ]
Milchanin, O., V [3 ]
Makhavikou, M. A. [3 ]
Mudryi, A., V [2 ]
Zhivulko, V. D. [2 ]
Kovalchuk, N. S. [4 ]
Krekoten, N. A. [4 ]
Lu, H-L [5 ]
机构
[1] Belarusian State Univ, Minsk, BELARUS
[2] Natl Acad Sci Belarus, Sci & Pract Mat Res Ctr, Minsk, BELARUS
[3] AN Sevchenko Inst Appl Phys Problems, Minsk, BELARUS
[4] Joint Stock Co Integral, Minsk, BELARUS
[5] Fudan Univ, Sch Microelect, State Key Lab ASIC & Syst, Shanghai, Peoples R China
基金
国家重点研发计划;
关键词
silicon nitride; photoluminescence; spectral ellipsometry; absorption edge; rapid thermal annealing; DEPOSITION; FILMS;
D O I
暂无
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Two triple-layered SiO2/SiNx/SiO2 structures with Si-rich and N-rich silicon nitride active layers were fabricated on p-type Si-substrates by chemical vapour deposition. The different stoichiometry of SiNx layer (x = 0.9 and x = 1.4) was obtained by changing the ratio of the SiH2Cl2/NH3 flow rates during deposition of silicon nitride active layer (8/1 and 1/8, respectively). The spectroscopic ellipsometry measurements show the refractive index as well as absorbance could be controlled by x adjusting. As a result, it could tune the emission colour of the deposited structures by changing their chemical composition. The structures with Si-rich and N-rich SiNx active layers emit in the red (1.9 eV) and blue (2.6 eV) spectral ranges, respectively. The PL intensities of the different structures with Si-rich and N-rich SiNx are comparable. Annealing effect on PL intensity is differed for structures with Si-rich and N-rich SiNx. The origin of PL and the effect of annealing treatment have been discussed.
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页数:4
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