Ultrafast spectroscopy of ZnO/ZnMgO quantum wells

被引：21

作者：

Davis, Jeffrey A. ^{[2
]}

Jagadish, Chennupati ^{[1
]}

机构：

[1] Australian Natl Univ, Res Sch Phys Sci & Engn, Dept Elect Mat Engn, Canberra, ACT 0200, Australia

[2] Swinburne Univ Technol, Ctr Atom Opt & Ultrafast Spect, Hawthorn, Vic 3122, Australia

来源：

LASER & PHOTONICS REVIEWS | 2009年 / 3卷 / 1-2期

基金：

澳大利亚研究理事会;

关键词：

Zinc oxide; quantum wells; excitons; dynamics; ultrafast spectroscopy; TIME-RESOLVED PHOTOLUMINESCENCE; INTERNAL ELECTRIC-FIELD; LUMINESCENCE PROPERTIES; BIEXCITON EMISSION; WIDTH DEPENDENCE; ABSORPTION-EDGE; BINDING-ENERGY; ZNO; EXCITONS; CONFINEMENT;

D O I：

10.1002/lpor.200810017

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have investigated carrier relaxation and exciton recombination dynamics in ZnO/ZnMgO multiple quantum wells using femtosecond pumpprobe techniques at room temperature. For a probe energy above the band gap, the hot carriers exhibit an effective relaxation by longitudinal optical phonon scattering with a cooling time of 700850 fs. By detecting the emission near the band-gap, a longer decay time of a few picoseconds was observed which is attributed to acoustic phonon scattering. As the probe energy is decreased further, the decay time continues to increase due to the transitions of exciton recombination or localized carrier recombination.

引用

页码：85 / 96

页数：12

共 71 条

[1] Influence of spontaneous polarization on the electrical and optical properties of bulk, single crystal ZnO [J].

Allen, M. W. ;

Miller, P. ;

Reeves, R. J. ;

Durbin, S. M. .

APPLIED PHYSICS LETTERS, 2007, 90 (06)

[2] Time resolved photoluminescence study of ZnO/(Zn,Mg)O quantum wells [J].

Bretagnon, T ;

Lefebvre, P ;

Valvin, P ;

Gil, B ;

Morhain, C ;

Tang, XD .

JOURNAL OF CRYSTAL GROWTH, 2006, 287 (01) :12-15

[3]

Bunn C.W., 1935, Proceedings of the Physical Society, V47, P835, DOI DOI 10.1088/0959-5309/47/5/307

[4] Plasma-assisted molecular beam epitaxy for ZnO based II-VI semiconductor oxides and their heterostructures [J].

Chen, YF ;

Ko, HJ ;

Hong, SK ;

Sekiuchi, T ;

Yao, T ;

Segawa, Y .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 2000, 18 (03) :1514-1517

[5] Confinement-enhanced biexciton binding energy in ZnO/ZnMgO multiple quantum wells [J].

Chia, CH ;

Makino, T ;

Tamura, K ;

Segawa, Y ;

Kawasaki, M ;

Ohtomo, A ;

Koinuma, H .

APPLIED PHYSICS LETTERS, 2003, 82 (12) :1848-1850

[6]

Chia CH, 2002, PHYS STATUS SOLIDI B, V229, P863, DOI 10.1002/1521-3951(200201)229:2<863::AID-PSSB863>3.0.CO

[7]

2-3

[8] Well-width dependence of radiative and nonradiative recombination times in ZnO/Mg0.12Zn0.88O multiple quantum wells [J].

Chia, CH ;

Makino, T ;

Segawa, Y ;

Kawasaki, M ;

Ohtomo, A ;

Tamura, K ;

Koinuma, H .

JOURNAL OF APPLIED PHYSICS, 2001, 90 (07) :3650-3652

[9]

Coleman VA, 2006, ZINC OXIDE BULK, THIN FILMS AND NANOSTRUCTURES: PROCESSING, PROPERTIES AND APPLICATIONS, P1, DOI 10.1016/B978-008044722-3/50001-4

[10] Observation of blue shifts in ZnO/ZnMgO multiple quantum well structures by ion-implantation induced intermixing [J].

Coleman, VA ;

Buda, M ;

Tan, HH ;

Jagadish, C ;

Phillips, MR ;

Koike, K ;

Sasa, S ;

Inoue, M ;

Yano, M .

SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 2006, 21 (03) :L25-L28

← 1 2 3 4 5 6 7 8 →