The origin of blue photoluminescence from nc-Si/SiO2 multilayers

Intensive blue photoluminescence （PL） was observed at room temperature from the nanocrystalline-Si/SiO2 （nc-Si/SiO2） multilayers （MLs） obtained by thermal annealing of SiO/SiO2 MLs for the first time. By controlling the size of nc-Si formed in SiO sublayer from 3.5 to 1.5 nm, the PL peak blueshifts from 457 to 411 nm. Combining the analysis of TEM, Raman and absorption measurement, this paper attributes the blue PL to multiple luminescent centres at the interface of nc-Si and SiO2.

The origin of blue photoluminescence from nc-Si/SiO2 multilayers

Intensive blue photoluminescence (PL) was observed at room temperature from the nanocrystalline-Si/SiOPL;nc-Si;喇曼光谱;光致发光;光学PL, nc-Si, Raman spectroscopyProject supported by the National Natural Science Foundation of China (Grant Nos 60508009, 60471021, 60571008 and 10574069) and the Nature Science Foundation of Jiangsu Province, China (Grant No BK2007135).2006-08-292007-05-24Intensive blue photoluminescence （PL） was observed at room temperature from the nanocrystalline-Si/SiO2 （nc-Si/SiO2） multilayers （MLs） obtained by thermal annealing of SiO/SiO2 MLs for the first time. By controlling the size of nc-Si formed in SiO sublayer from 3.5 to 1.5 nm, the PL peak blueshifts from 457 to 411 nm. Combining the analysis of TEM, Raman and absorption measurement, this paper attributes the blue PL to multiple luminescent centres at the interface of nc-Si and SiO2.State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, ChinaE-mail： zyma@nju.edu.cn/qk/85823A/200801/26433205.html7360F, 6170A, 7855Intensive blue photoluminescence (PL) was observed at room temperature from the nanocrystalline-Si/SiOPL;nc-Si;喇曼光谱;光致发光;光学PL, nc-Si, Raman spectroscopyProject supported by the National Natural Science Foundation of China (Grant Nos 60508009, 60471021, 60571008 and 10574069) and the Nature Science Foundation of Jiangsu Province, China (Grant No BK2007135).2006-08-292007-05-24Intensive blue photoluminescence （PL） was observed at room temperature from the nanocrystalline-Si/SiO2 （nc-Si/SiO2） multilayers （MLs） obtained by thermal annealing of SiO/SiO2 MLs for the first time. By controlling the size of nc-Si formed in SiO sublayer from 3.5 to 1.5 nm, the PL peak blueshifts from 457 to 411 nm. Combining the analysis of TEM, Raman and absorption measurement, this paper attributes the blue PL to multiple luminescent centres at the interface of nc-Si and SiO2.State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, ChinaE-mail： zyma@nju.edu.cn/qk/85823A/200801/26433205.html7360F, 6170A, 7855Intensive blue photoluminescence (PL) was observed at room temperature from the nanocrystalline-Si/SiOPL;nc-Si;喇曼光谱;光致发光;光学PL, nc-Si, Raman spectroscopyProject supported by the National Natural Science Foundation of China (Grant Nos 60508009, 60471021, 60571008 and 10574069) and the Nature Science Foundation of Jiangsu Province, China (Grant No BK2007135).2006-08-292007-05-24Intensive blue photoluminescence （PL） was observed at room temperature from the nanocrystalline-Si/SiO2 （nc-Si/SiO2） multilayers （MLs） obtained by thermal annealing of SiO/SiO2 MLs for the first time. By controlling the size of nc-Si formed in SiO sublayer from 3.5 to 1.5 nm, the PL peak blueshifts from 457 to 411 nm. Combining the analysis of TEM, Raman and absorption measurement, this paper attributes the blue PL to multiple luminescent centres at the interface of nc-Si and SiO2.State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, ChinaE-mail： zyma@nju.edu.cn/qk/85823A/200801/26433205.html7360F, 6170A, 7855Intensive blue photoluminescence (PL) was observed at room temperature from the nanocrystalline-Si/SiO$_{2}$ (nc-Si/SiO$_{2})$ multilayers (MLs) obtained by thermal annealing of SiO/SiO$_{2}$\,MLs for the first time. By controlling the size of nc-Si formed in SiO sublayer from 3.5 to 1.5 nm, the PL peak blueshifts from 457 to 411 nm. Combining the analysis of TEM, Raman and absorption measurement, this paper attributes the blue PL to multiple luminescent centres at the interface of nc-Si and SiO$_{2}$.