Spatiotemporal dynamics of photogenerated carriers in GaAs/AlGaAs multiple quantum wells

Chang Cheng Hu; Hui Qi Ye; Gang Wang; Bao Li Liu

Spatiotemporal dynamics of photogenerated carriers in GaAs/AlGaAs multiple quantum wells

Chang Cheng Hu
, Hui Qi Ye
, Gang Wang
, Bao Li Liu^*

^*Corresponding author for this work

Jilin University
CAS - Institute of Physics

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The ambipolar diffusion coefficient of (110) GaAs/AlGaAs multiple quantum wells was measured by the transient spin grating technique. The ambipolar diffusion coefficient and carrier life time, which are D_a=13.0 cm²/s and τ_R=1.9 ns, were obtained directly by this technique under carrier concentration n_ex=3.4×10¹⁰/cm² at room temperature. The measured D_a keeps almost a constant value when the photoexcited carrier concentration is increased up to 1.2×10¹¹/cm².

Original language	English
Article number	017803
Journal	Wuli Xuebao/Acta Physica Sinica
Volume	60
Issue number	1
Publication status	Published - Jan 2011
Externally published	Yes

Keywords

Hole transport
Quantum well
Transient grating

Cite this

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title = "Spatiotemporal dynamics of photogenerated carriers in GaAs/AlGaAs multiple quantum wells",

abstract = "The ambipolar diffusion coefficient of (110) GaAs/AlGaAs multiple quantum wells was measured by the transient spin grating technique. The ambipolar diffusion coefficient and carrier life time, which are Da=13.0 cm2/s and τR=1.9 ns, were obtained directly by this technique under carrier concentration nex=3.4{\texttimes}1010/cm2 at room temperature. The measured Da keeps almost a constant value when the photoexcited carrier concentration is increased up to 1.2{\texttimes}1011/cm2.",

keywords = "Hole transport, Quantum well, Transient grating",

author = "Hu, \{Chang Cheng\} and Ye, \{Hui Qi\} and Gang Wang and Liu, \{Bao Li\}",

year = "2011",

month = jan,

language = "English",

volume = "60",

journal = "Wuli Xuebao/Acta Physica Sinica",

issn = "1000-3290",

publisher = "Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences",

number = "1",

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TY - JOUR

T1 - Spatiotemporal dynamics of photogenerated carriers in GaAs/AlGaAs multiple quantum wells

AU - Hu, Chang Cheng

AU - Ye, Hui Qi

AU - Wang, Gang

AU - Liu, Bao Li

PY - 2011/1

Y1 - 2011/1

N2 - The ambipolar diffusion coefficient of (110) GaAs/AlGaAs multiple quantum wells was measured by the transient spin grating technique. The ambipolar diffusion coefficient and carrier life time, which are Da=13.0 cm2/s and τR=1.9 ns, were obtained directly by this technique under carrier concentration nex=3.4×1010/cm2 at room temperature. The measured Da keeps almost a constant value when the photoexcited carrier concentration is increased up to 1.2×1011/cm2.

AB - The ambipolar diffusion coefficient of (110) GaAs/AlGaAs multiple quantum wells was measured by the transient spin grating technique. The ambipolar diffusion coefficient and carrier life time, which are Da=13.0 cm2/s and τR=1.9 ns, were obtained directly by this technique under carrier concentration nex=3.4×1010/cm2 at room temperature. The measured Da keeps almost a constant value when the photoexcited carrier concentration is increased up to 1.2×1011/cm2.

KW - Hole transport

KW - Quantum well

KW - Transient grating

UR - https://www.scopus.com/pages/publications/79952523079

M3 - Article

AN - SCOPUS:79952523079

SN - 1000-3290

VL - 60

JO - Wuli Xuebao/Acta Physica Sinica

JF - Wuli Xuebao/Acta Physica Sinica

IS - 1

M1 - 017803

ER -

Spatiotemporal dynamics of photogenerated carriers in GaAs/AlGaAs multiple quantum wells

Abstract

Keywords

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