Photoluminescence of CdTe/CdMnTe multiple quantum wells excited near the Mott transition

被引：24

作者：

Cain, N

ONeill, M

Nicholls, JE

Stirner, T

Hagston, WE

Ashenford, DE

机构：

[1] UNIV HULL,DEPT PHYS,KINGSTON HULL HU6 7RX,N HUMBERSIDE,ENGLAND

[2] UNIV HULL,DEPT ENGN DESIGN & MANUFACTURE,KINGSTON HULL HU6 7RX,N HUMBERSIDE,ENGLAND

来源：

JOURNAL OF LUMINESCENCE | 1997年 / 75卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

II-VI semiconductors; photoluminescence; Mott transition; biexcitons; quantum wells;

D O I：

10.1016/S0022-2313(97)00135-X

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Using pulses from a 6 ns dye laser, the photoluminescence from CdTe/CdMnTe quantum wells is investigated as a function of carrier density. The spectra broaden with density but many sharp features remain. A biexciton is identified with a transition energy of 3.8 meV less than that of the free exciton. The Mott transition for the el-hl bandedge is approached at an excitation density of 2.2 x 10(12) cm(-2). Photoluminescence from the e1-h3 exciton is observed as a sharp peak at high densities. Its transition energy does not change and its intensity increases linearly with carrier density.

引用

收藏

页码：269 / 275

页数：7

相关论文

共 16 条

[1] MANY-BODY EFFECTS IN TRANSIENT LUMINESCENCE SPECTRA OF A HOMOGENEOUS ELECTRON-HOLE PLASMA IN CDTE/CDMNTE QUANTUM-WELLS [J].

BACHER, G ;

DAIMINGER, F ;

FORCHEL, A ;

WAAG, A ;

LITZ, T ;

LANDWEHR, G .

JOURNAL OF CRYSTAL GROWTH, 1994, 138 (1-4) :856-860

[2] Binding of quasi-two-dimensional biexcitons [J].

Birkedal, D ;

Singh, J ;

Lyssenko, VG ;

Erland, J ;

Hvam, JM .

PHYSICAL REVIEW LETTERS, 1996, 76 (04) :672-675

[3]

CAIN N, 1996, THESIS U HULL

[4] LINE-SHAPES OF INTERSUBBAND AND EXCITONIC RECOMBINATION IN QUANTUM-WELLS - INFLUENCE OF FINAL-STATE INTERACTION, STATISTICAL BROADENING, AND MOMENTUM CONSERVATION [J].

CHRISTEN, J ;

BIMBERG, D .

PHYSICAL REVIEW B, 1990, 42 (11) :7213-7219

[5] FREQUENCY AND DENSITY DEPENDENT RADIATIVE RECOMBINATION PROCESSES IN III-V SEMICONDUCTOR QUANTUM-WELLS AND SUPERLATTICES [J].

CINGOLANI, R ;

PLOOG, K .

ADVANCES IN PHYSICS, 1991, 40 (05) :535-623

[6] BAND-GAP RENORMALIZATION IN SEMICONDUCTOR QUANTUM-WELLS [J].

DASSARMA, S ;

JALABERT, R ;

YANG, SRE .

PHYSICAL REVIEW B, 1990, 41 (12) :8288-8294

[7] MAGNETOOPTICAL STUDY OF EXCITONIC BINDING-ENERGIES, BAND OFFSETS, AND THE ROLE OF INTERFACE POTENTIALS IN CDTE/CD1-XMNXTE MULTIPLE-QUANTUM WELLS [J].

JACKSON, SR ;

NICHOLLS, JE ;

HAGSTON, WE ;

HARRISON, P ;

STIRNER, T ;

HOGG, JHC ;

LUNN, B ;

ASHENFORD, DE .

PHYSICAL REVIEW B, 1994, 50 (08) :5392-5403

[8] ROOM-TEMPERATURE EMISSION OF HIGHLY EXCITED GAAS/GA1-XALXAS QUANTUM-WELLS [J].

LACH, E ;

FORCHEL, A ;

BROIDO, DA ;

REINECKE, TL ;

WEIMANN, G ;

SCHLAPP, W .

PHYSICAL REVIEW B, 1990, 42 (08) :5395-5398

[9] DIMENSIONALITY OF EXCITON-STATE RENORMALIZATION IN HIGHLY EXCITED SEMICONDUCTORS [J].

NOJIMA, S .

PHYSICAL REVIEW B, 1995, 51 (16) :11124-11127

[10] RELATIVE IMPORTANCE OF SELF-CONSISTENCY AND VARIABLE SYMMETRY IN THE CALCULATION OF EXCITON ENERGIES IN TYPE-I AND TYPE-II SEMICONDUCTOR HETEROSTRUCTURES [J].

PIOREK, T ;

HARRISON, P ;

HAGSTON, WE .

PHYSICAL REVIEW B, 1995, 52 (19) :14111-14117