A pump and probe study of photoinduced internal field screening dynamics in an AlGaN/GaN single-quantum-well structure

被引：23

作者：

Shikanai, A ^{[1
]}

Deguchi, T

Sota, T

Kuroda, T

Tackeuchi, A

Chichibu, S

Nakamura, S

机构：

[1] Waseda Univ, Dept Elect Engn & Comp Engn, Tokyo 1698555, Japan

[2] Waseda Univ, Dept Appl Phys, Tokyo 1698555, Japan

[3] Univ Tsukuba, Inst Appl Phys, Tsukuba, Ibaraki 3058573, Japan

[4] Nichia Chem Ind Ltd, Dept Res & Dev, Tokushima 7448605, Japan

来源：

APPLIED PHYSICS LETTERS | 2000年 / 76卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.125785

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Photogenerated carrier dynamics in an AlGaN/GaN single quantum well has been studied using a conventional degenerate pump and probe technique at room temperature. Photoinduced absorption at the exciton resonance has been observed. It is explained by the absorption coefficient change, through the quantum-confined Stark effect and the quantum-confined Franz-Keldish effect, caused by the photoinduced internal electric-field screening. In comparison with biased GaAs multiple quantum wells, a slower time evolution of differential transmission signals has been also found. Its origin is attributed to the longer carrier sweep-out time due to the potential profile of the sample in conjunction with the longer carrier recombination time. (C) 2000 American Institute of Physics. [S0003-6951(00)02404-9].

引用

页码：454 / 456

页数：3

共 24 条

[1] Crystal growth and conductivity control of group III nitride semiconductors and their application to short wavelength light emitters [J].

Akasaki, I ;

Amano, H .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 1997, 36 (9A) :5393-5408

[2]

BERNARDINI F, 1997, PHYS REV B, V56, pR1004

[3] SIMULTANEOUS MEASUREMENT OF ELECTRON AND HOLE ESCAPE TIMES FROM BIASED SINGLE QUANTUM-WELLS [J].

CAVAILLES, JA ;

MILLER, DAB ;

CUNNINGHAM, JE ;

WA, PLK ;

MILLER, A .

APPLIED PHYSICS LETTERS, 1992, 61 (04) :426-428

[4] SIMULTANEOUS MEASUREMENTS OF ELECTRON AND HOLE SWEEP-OUT FROM QUANTUM-WELLS AND MODELING OF PHOTOINDUCED FIELD SCREENING DYNAMICS [J].

CAVAILLES, JA ;

MILLER, DAB ;

CUNNINGHAM, JE ;

WA, PLK ;

MILLER, A .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1992, 28 (10) :2486-2497

[5]

DEGUCHI T, 1999, JPN J APPL PHYS PT 2, V38, pL850

[6] QUANTUM-WELL CARRIER SWEEP OUT - RELATION TO ELECTROABSORPTION AND EXCITON SATURATION [J].

FOX, AM ;

MILLER, DAB ;

LIVESCU, G ;

CUNNINGHAM, JE ;

JAN, WY .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1991, 27 (10) :2281-2295

[7] Observation of long-lived oblique excitons in GaN-AlGaN multiple quantum wells [J].

Gil, B ;

Lefebvre, P ;

Allègre, J ;

Mathieu, H ;

Grandjean, N ;

Leroux, M ;

Massies, J ;

Bigenwald, P ;

Christol, P .

PHYSICAL REVIEW B, 1999, 59 (15) :10246-10250

[8]

IM JS, 1998, PHYS REV B, V57, P9435

[9] TUNABLE SUPERLATTICE P-I-N PHOTODETECTORS - CHARACTERISTICS, THEORY, AND APPLICATIONS [J].

LARSSON, A ;

ANDREKSON, PA ;

ENG, ST ;

YARIV, A .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1988, 24 (05) :787-801

[10] BAND-EDGE ELECTROABSORPTION IN QUANTUM WELL STRUCTURES - THE QUANTUM-CONFINED STARK-EFFECT [J].

MILLER, DAB ;

CHEMLA, DS ;

DAMEN, TC ;

GOSSARD, AC ;

WIEGMANN, W ;

WOOD, TH ;

BURRUS, CA .

PHYSICAL REVIEW LETTERS, 1984, 53 (22) :2173-2176

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