Stimulated emission from trapped excitons in SnO2 nanowires
作者： RuiBin Liu , YuJin Chen , FeiFei Wang , Li Cao , AnLian Pan
DOI: 10.1016/J.PHYSE.2007.04.009
关键词: Molecular physics 、 Materials science 、 High-resolution transmission electron microscopy 、 Stimulated emission 、 Fluence 、 Semiconductor 、 Transmission electron microscopy 、 Nanowire 、 Exciton 、 Photoluminescence 、 Optics
摘要: The pump fluence dependent photoluminescence (PL) spectra of SnO2 nanowires were investigated, which synthesized with a high-temperature chemical reduction method. integrated intensity the narrower peak at 3.2 eV experiences strong superlinear dependence on fluence, and narrowest width sharp is only 19 meV. Moreover, under high excitation an ultrafast decay time (less than 20 ps) appears in time-resolved PL spectra. emission these shows apparent stimulated behaviors although dipole forbidden direct gap semiconductor. should relate to localized islands surface nanowire, was observed through resolution transmission electron microscopy (HRTEM) image. giant-oscillator-strength effect bound exciton generated from considered induce nanowires.
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sci-hub.se 参考文章(33)
Marek W. Urban, Vibrational Spectroscopy of Molecules and Macromolecules on Surfaces ,(1994)
Matt Law, Donald J Sirbuly, Justin C Johnson, Josh Goldberger, Richard J Saykally, Peidong Yang, Nanoribbon Waveguides for Subwavelength Photonics Integration Science. ,vol. 305, pp. 1269- 1273 ,(2004) , 10.1126/SCIENCE.1100999
Tetsuji Tokihiro, Yoshihiro Manabe, Eiichi Hanamura, Superradiance of Frenkel excitons in linear systems. Physical Review B. ,vol. 47, pp. 2019- 2030 ,(1993) , 10.1103/PHYSREVB.47.2019
Jin Jeong, Seong-Pyung Choi, Cha Ik Chang, Dong Chan Shin, Jin Sung Park, B-T Lee, Yeong-Jun Park, Ho-Jun Song, Photoluminescence properties of SnO2 thin films grown by thermal CVD Solid State Communications. ,vol. 127, pp. 595- 597 ,(2003) , 10.1016/S0038-1098(03)00614-8
S. Schmitt-Rink, D.S. Chemla, D.A.B. Miller, Linear and nonlinear optical properties of semiconductor quantum wells Advances in Physics. ,vol. 38, pp. 89- 188 ,(1989) , 10.1080/00018738900101102
T. W. Kim, D. U. Lee, Y. S. Yoon, Microstructural, electrical, and optical properties of SnO2 nanocrystalline thin films grown on InP (100) substrates for applications as gas sensor devices Journal of Applied Physics. ,vol. 88, pp. 3759- 3761 ,(2000) , 10.1063/1.1288021
Yi Cui, Qingqiao Wei, Hongkun Park, Charles M Lieber, Nanowire Nanosensors for Highly Sensitive and Selective Detection of Biological and Chemical Species Science. ,vol. 293, pp. 1289- 1292 ,(2001) , 10.1126/SCIENCE.1062711
Jin Ma, Yuheng Wang, Feng Ji, Xuhu Yu, Honglei Ma, UV–violet photoluminescence emitted from SnO2:Sb thin films at different temperature Materials Letters. ,vol. 59, pp. 2142- 2145 ,(2005) , 10.1016/J.MATLET.2005.02.049
Sung-Sik Chang, Dong Kee Park, Novel Sn powder preparation by spark processing and luminescence properties Materials Science and Engineering B-advanced Functional Solid-state Materials. ,vol. 95, pp. 55- 60 ,(2002) , 10.1016/S0921-5107(02)00162-9
Li Cao, Bingsuo Zou, Chaorong Li, Zebo Zhang, Sishen Xie, Guozhen Yang, Laser emission of low-threshold excitation from ZnO nanowires EPL. ,vol. 68, pp. 740- 745 ,(2004) , 10.1209/EPL/I2004-10264-8