Excitonic properties of zinc-blende ZnSe/MgS superlattices studied by reflection spectroscopy

被引：18

作者：

Kumano, H

Nashiki, H

Suemune, I

Arita, M

Obinata, T

Suzuki, H

Uesugi, K

Nakahara, J

机构：

[1] HOKKAIDO UNIV,DEPT PHYS,SAPPORO,HOKKAIDO 060,JAPAN

[2] HOKKAIDO UNIV,RES INST ELECT SCI,SAPPORO,HOKKAIDO 060,JAPAN

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.55.4449

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Excitonic properties of newly developed zinc-blende ZnSe/MgS superlattices (SL's) were measured by reflection spectroscopy. The modification of the excitonic peaks by the multiple reflection in the SL films was treated theoretically and a fitting method to estimate the exciton absorption peak positions and exciton linewidths was developed. Although zinc-blende MgS did not exist before, excellent optical properties were observed in the ZnSe/MgS SL's. Excitonic structures were clearly observed from 13 K up to the measured room temperature. In spite of strong ionicity of MgS barrier layers in the ZnSe/MgS SL's, the reduction of exciton-LO-phonon coupling was clearly observed in narrower wells. This indicates that the quantum confinement effect on excitons is large due to the large band offsets and it overcomes the enhancement of exciton-LO-phonon scattering due to high ionicity in barrier layers.

引用

收藏

页码：4449 / 4455

页数：7

相关论文

共 28 条

[1] REFRACTIVE-INDEX OF GA1-XALXAS [J].

AFROMOWITZ, MA .

SOLID STATE COMMUNICATIONS, 1974, 15 (01) :59-63

[2] STIMULATED-EMISSION AND LASER OSCILLATIONS IN ZNSE-ZN1-XMNXSE MULTIPLE QUANTUM WELLS AT APPROXIMATELY 453-NM [J].

BYLSMA, RB ;

BECKER, WM ;

BONSETT, TC ;

KOLODZIEJSKI, LA ;

GUNSHOR, RL ;

YAMANISHI, M ;

DATTA, S .

APPLIED PHYSICS LETTERS, 1985, 47 (10) :1039-1041

[3] FRACTIONAL-DIMENSIONAL CALCULATION OF EXCITON BINDING-ENERGIES IN SEMICONDUCTOR QUANTUM-WELLS AND QUANTUM-WELL WIRES [J].

CHRISTOL, P ;

LEFEBVRE, P ;

MATHIEU, H .

JOURNAL OF APPLIED PHYSICS, 1993, 74 (09) :5626-5637

[4] EXCITON SPECTROSCOPY IN ZN1-XCDXSE/ZNSE QUANTUM-WELLS [J].

CINGOLANI, R ;

PRETE, P ;

GRECO, D ;

GIUGNO, PV ;

LOMASCOLO, M ;

RINALDI, R ;

CALCAGNILE, L ;

VANZETTI, L ;

SORBA, L ;

FRANCIOSI, A .

PHYSICAL REVIEW B, 1995, 51 (08) :5176-5183

[5]

DABBICCO M, 1995, ADV SCI TECHNOLOGY, V11, P331

[6] LINEWIDTH OF EXCITONIC EMISSION AND STARK-EFFECT IN A ZNSE-ZNS STRAINED-LAYER SUPERLATTICE [J].

KAWAKAMI, Y ;

TAGUCHI, T .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1989, 7 (04) :789-792

[7] OPTICAL AND STRUCTURAL CHARACTERIZATIONS OF ZNSE/ZNSSE SUPERLATTICES GROWN BY METALORGANIC CHEMICAL VAPOR-DEPOSITION [J].

KURODA, Y ;

SUEMUNE, I ;

FUJIMOTO, M ;

FUJII, Y ;

OTSUKA, N ;

NAKAMURA, Y .

JOURNAL OF APPLIED PHYSICS, 1992, 72 (07) :3029-3033

[8] CARRIER RECOMBINATION STUDIES OF ZNCDSE/ZNSE SINGLE QUANTUM-WELLS GROWN BY MOLECULAR-BEAM EPITAXY [J].

MASSA, JS ;

BULLER, GS ;

WALKER, AC ;

HORSBURGH, G ;

MULLINS, JT ;

PRIOR, KA ;

CAVENETT, BC .

APPLIED PHYSICS LETTERS, 1995, 66 (11) :1346-1348

[9]

OBINATA T, 1995, 1995 INT C SSDM BUS, P1091

[10] QUASI-2-DIMENSIONAL EXCITONS IN (ZN,CD)SE/ZNSE QUANTUM-WELLS - REDUCED EXCITON LO-PHONON COUPLING DUE TO CONFINEMENT EFFECTS [J].

PELEKANOS, NT ;

DING, J ;

HAGEROTT, M ;

NURMIKKO, AV ;

LUO, H ;

SAMARTH, N ;

FURDYNA, JK .

PHYSICAL REVIEW B, 1992, 45 (11) :6037-6042