MEASURED TRANSITION FROM 2-DIMENSIONAL TO 3-DIMENSIONAL ELECTROABSORPTION AS QUANTUM-WELL BARRIERS ARE LOWERED

被引：17

作者：

GOOSSEN, KW

CUNNINGHAM, JE

WILLIAMS, MD

STORZ, FG

JAN, WY

机构：

[1] AT and T Bell Laboratories, Holmdel

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 23期

关键词：

D O I：

10.1103/PhysRevB.45.13773

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electric-field-dependent measurements of photocurrent spectra of GaAs-AlxGa1-xAs multiple quantum wells are made for 0.0013<x<0.0250. Strong room-temperature exciton enhancement and quantum-confined Stark effect are observed for x as low as 0.0082. Below that x value behavior is more bulklike. It is at this x value that theory predicts that the holes should become delocalized. This study indicates that a three-dimensional electron and a two-dimensional hole results in a two-dimensional exciton in this system.

引用

页码：13773 / 13776

页数：4

共 13 条

[11] OBSERVATION OF THE WANNIER-STARK QUANTIZATION IN A SEMICONDUCTOR SUPERLATTICE
VOISIN, P
BLEUSE, J
BOUCHE, C
GAILLARD, S
ALIBERT, C
REGRENY, A
[J]. PHYSICAL REVIEW LETTERS, 1988, 61 (14) : 1639 - 1642
[12] HIGH-SPEED OPTICAL MODULATION WITH GAAS/GAALAS QUANTUM WELLS IN A P-I-N-DIODE STRUCTURE
WOOD, TH
BURRUS, CA
MILLER, DAB
CHEMLA, DS
DAMEN, TC
GOSSARD, AC
WIEGMANN, W
[J]. APPLIED PHYSICS LETTERS, 1984, 44 (01) : 16 - 18
[13] WANNIER EXCITONS IN SEMICONDUCTOR QUANTUM WELLS WITH SMALL VALENCE-BAND OFFSETS - A GENERALIZED VARIATIONAL APPROACH
WU, JW
NURMIKKO, AV
[J]. PHYSICAL REVIEW B, 1988, 38 (02): : 1504 - 1507

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