EXCITONS IN TYPE-II QUANTUM DOTS - FINITE OFFSETS

被引：71

作者：

LAHELD, UEH

PEDERSEN, FB

HEMMERS, PC

机构：

[1] Institutt for Fysikk, Norges Tekniske Hogskole

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.52.2697

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Quantum size effects for an exciton attached to a spherical quantum dot are calculated by a variational approach. The band lineups are assumed to be type II with finite offsets V-e and V-h. The dependence of the exciton binding energy upon the dot radius R and the offsets is studied for different sets of electron and hole effective masses.

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页码：2697 / 2703

页数：7

相关论文

共 28 条

[1] EXCITONS IN CONFINED SYSTEMS - FROM QUANTUM-WELL TO BULK BEHAVIOR [J].

ANDREANI, LC ;

DANDREA, A ;

DELSOLE, R .

PHYSICS LETTERS A, 1992, 168 (5-6) :451-459

[2] EXCITON BINDING-ENERGY IN QUANTUM WELLS [J].

BASTARD, G ;

MENDEZ, EE ;

CHANG, LL ;

ESAKI, L .

PHYSICAL REVIEW B, 1982, 26 (04) :1974-1979

[3] CALCULATION OF THE EXCITON BINDING-ENERGIES IN TYPE-II GAAS/ALAS QUANTUM-WELL STRUCTURES - APPLICATION OF THE PERTURBATION-VARIATIONAL EXPANSION METHOD [J].

BRANIS, SV ;

BAJAJ, KK .

PHYSICAL REVIEW B, 1992, 45 (11) :6271-6274

[4] EXCITON BINDING-ENERGY IN A QUANTUM-WELL WIRE [J].

BROWN, JW ;

SPECTOR, HN .

PHYSICAL REVIEW B, 1987, 35 (06) :3009-3012

[5] UNAMBIGUOUS OBSERVATION OF THE 2S STATE OF THE LIGHT-HOLE AND HEAVY-HOLE EXCITONS IN GAAS-(ALGA) AS MULTIPLE-QUANTUM-WELL STRUCTURES [J].

DAWSON, P ;

MOORE, KJ ;

DUGGAN, G ;

RALPH, HI ;

FOXON, CTB .

PHYSICAL REVIEW B, 1986, 34 (08) :6007-6010

[6] IMPURITIES IN TYPE-II-STAGGERED INAS/ALSB SUPERLATTICES [J].

DOW, JD ;

SHEN, J ;

REN, SY .

SUPERLATTICES AND MICROSTRUCTURES, 1993, 13 (04) :405-411

[7] EXCITON BINDING-ENERGY IN TYPE-II GAAS-(AL,GA) AS QUANTUM-WELL HETEROSTRUCTURES [J].

DUGGAN, G ;

RALPH, HI .

PHYSICAL REVIEW B, 1987, 35 (08) :4152-4154

[8] EXCITONS BOUND TO ISOELECTRONIC TE TRAPS IN ZNSE QUANTUM-WELLS - A THEORETICAL-STUDY [J].

EINEVOLL, GT ;

CITRIN, DS ;

CHANG, YC .

PHYSICAL REVIEW B, 1991, 44 (15) :8068-8083

[9]

EINEVOLL GT, 1992, PHYS REV B, V40, P3410

[10] ENERGY-LEVELS OF WANNIER EXCITONS IN GAAS-GA1-XALXAS QUANTUM-WELL STRUCTURES [J].

GREENE, RL ;

BAJAJ, KK ;

PHELPS, DE .

PHYSICAL REVIEW B, 1984, 29 (04) :1807-1812