Monoexponential Microsecond Decay of Blue Photoluminescence in Aged Porous Silicon Prepared with Ar+ 488nm
LI Peng1, MA Yu-rong1,2, WANG Guan-zhong1, FANG Rong-chuan1
1Department of Physics, University of Science and Technology of China, Hefei 230026
2Laboratory of Excited State Processes, Changchun Institute of Physics, Chinese Academy of Sciences, Changchun 130021
Monoexponential Microsecond Decay of Blue Photoluminescence in Aged Porous Silicon Prepared with Ar+ 488nm
LI Peng1;MA Yu-rong1,2;WANG Guan-zhong1;FANG Rong-chuan1
1Department of Physics, University of Science and Technology of China, Hefei 230026
2Laboratory of Excited State Processes, Changchun Institute of Physics, Chinese Academy of Sciences, Changchun 130021
Abstract： Blue photoluminescence is observed in aged porous silicon samples anodized under Ar+ 488 nm laser illumination. No samples have been undergone any heating treatment process. Both nanosecond and microsecond decay of blue photoluminescence have been measured. Samples show a good monoexponential microsecond decay with lifetimes of about 5.3μs . Photoluminescence excitation spectra of blue and red Photoluminescence indicate there is a large Stokes shift (about 800-900meV) in the excitation spectra of red photoluminescence while no this marked Stokes shift in that of blue photoluminescence. The possible origin of the photoluminescence is discussed based on the experimental results.
LI Peng;MA Yu-rong;WANG Guan-zhong;FANG Rong-chuan. Monoexponential Microsecond Decay of Blue Photoluminescence in Aged Porous Silicon Prepared with Ar+ 488nm[J]. 中国物理快报, 1998, 15(5): 382-384.
LI Peng, MA Yu-rong, WANG Guan-zhong, FANG Rong-chuan. Monoexponential Microsecond Decay of Blue Photoluminescence in Aged Porous Silicon Prepared with Ar+ 488nm. Chin. Phys. Lett., 1998, 15(5): 382-384.
1998, Vol. 15 
