Ultrafast spectroscopy of stimulated emission in single ZnO tetrapod nanowires

被引：23

作者：

Djurisic, AB

Kwok, WM

Leung, YH

Chan, WK

Phillips, DL

Lin, MS

Gwo, S

机构：

[1] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China

[2] Univ Hong Kong, Dept Chem, Hong Kong, Hong Kong, Peoples R China

[3] Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan

来源：

NANOTECHNOLOGY | 2006年 / 17卷 / 01期

关键词：

D O I：

10.1088/0957-4484/17/1/041

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Stimulated emission from single ZnO tetrapod nanowires was studied by time-resolved photoluminescence (TRPL) spectroscopy. The samples were excited by a 300 fs pulse and the emission spectra collected as a function of time. The spectra exhibit a change in the position and the shape of the emission peak with time. The time evolution of the emission spectra was studied for different pump excitation fluences. The spectra exhibited a blue shift with increasing pump fluence, while for all pump fluences a red shift of the peaks with time was obtained. Possible reasons for the observed behaviour are discussed.

引用

收藏

页码：244 / 249

页数：6

相关论文

共 18 条

[1] SCATTERING OF SCREENED EXCITONS BY FREE-CARRIERS IN SEMICONDUCTING QUANTUM WELL STRUCTURES [J].

FENG, YP ;

SPECTOR, HN .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1988, 24 (08) :1659-1663

[2] EXCITON DYNAMICS IU ELECTROLUMINESCENT POLYMERS STUDIED BY FEMTOSECOND TIME-RESOLVED PHOTOLUMINESCENCE SPECTROSCOPY [J].

HAYES, GR ;

SAMUEL, IDW ;

PHILLIPS, RT .

PHYSICAL REVIEW B, 1995, 52 (16) :11569-11572

[3] Room-temperature ultraviolet nanowire nanolasers [J].

Huang, MH ;

Mao, S ;

Feick, H ;

Yan, HQ ;

Wu, YY ;

Kind, H ;

Weber, E ;

Russo, R ;

Yang, PD .

SCIENCE, 2001, 292 (5523) :1897-1899

[4] Ultrafast carrier dynamics in single ZnO nanowire and nanoribbon lasers [J].

Johnson, JC ;

Knutsen, KP ;

Yan, HQ ;

Law, M ;

Zhang, YF ;

Yang, PD ;

Saykally, RJ .

NANO LETTERS, 2004, 4 (02) :197-204

[5] Optical cavity effects in ZnO nanowire lasers and waveguides [J].

Johnson, JC ;

Yan, HQ ;

Yang, PD ;

Saykally, RJ .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (34) :8816-8828

[6] Microscopic theory of excitonic signatures in semiconductor photoluminescence [J].

Kira, M ;

Jahnke, F ;

Koch, SW .

PHYSICAL REVIEW LETTERS, 1998, 81 (15) :3263-3266

[7] MONTE-CARLO SIMULATION OF ULTRAFAST PROCESSES IN PHOTOEXCITED SEMICONDUCTORS - COHERENT AND INCOHERENT DYNAMICS [J].

KUHN, T ;

ROSSI, F .

PHYSICAL REVIEW B, 1992, 46 (12) :7496-7514

[8] Time-resolved study of stimulated emission in ZnO tetrapod nanowires [J].

Leung, YH ;

Kwok, WM ;

Djurisic, AB ;

Phillips, DL ;

Chan, WK .

NANOTECHNOLOGY, 2005, 16 (04) :579-582

[9] Different origins of visible luminescence in ZnO nanostructures fabricated by the chemical and evaporation methods [J].

Li, D ;

Leung, YH ;

Djurisic, AB ;

Liu, ZT ;

Xie, MH ;

Shi, SL ;

Xu, SJ ;

Chan, WK .

APPLIED PHYSICS LETTERS, 2004, 85 (09) :1601-1603

[10] Stimulated emission and time-resolved photoluminescence in rf-sputtered ZnO thin films [J].

Ozgür, U ;

Teke, A ;

Liu, C ;

Cho, SJ ;

Morkoç, H ;

Everitt, HO .

APPLIED PHYSICS LETTERS, 2004, 84 (17) :3223-3225