Raman scattering from CdSe/ZnSe self-assembled quantum dot structures

被引：35

作者：

Rho, H ^{[1
]}

Jackson, HE

Lee, S

Dobrowolska, M

Furdyna, JK

机构：

[1] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA

[2] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 23期

关键词：

D O I：

10.1103/PhysRevB.61.15641

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report Raman scattering from CdSe/ZnSe self-assembled quantum dot structures. A series of samples, each with a different growth-interruption time before ZnSe caping of the CdSe dots, is investigated. ZnSe longitudinal optical (LO) phonon shifts as a function of the interruption time show a complex pattern due to the evolution of CdSe dots. We observe an LO phonon from the CdSe dots at similar to 221 cm(-1) as well as an interface phonon at similar to 245 cm(-1). We present evidence that the interface phonon is localized at the interface between the CdSe dots and the ZnSe cap layer.

引用

收藏

页码：15641 / 15644

页数：4

相关论文

共 18 条

[1] RESONANCE RAMAN-SCATTERING AND OPTICAL-ABSORPTION STUDIES OF CDSE MICROCLUSTERS AT HIGH-PRESSURE [J].

ALIVISATOS, AP ;

HARRIS, TD ;

BRUS, LE ;

JAYARAMAN, A .

JOURNAL OF CHEMICAL PHYSICS, 1988, 89 (10) :5979-5982

[2] STRESS-INDUCED SHIFTS OF FIRST-ORDER RAMAN FREQUENCIES OF DIAMOND AND ZINC-BLENDE-TYPE SEMICONDUCTORS [J].

CERDEIRA, F ;

BUCHENAUER, CJ ;

CARDONA, M ;

POLLAK, FH .

PHYSICAL REVIEW B-SOLID STATE, 1972, 5 (02) :580-+

[3] INAS/GAAS PYRAMIDAL QUANTUM DOTS - STRAIN DISTRIBUTION, OPTICAL PHONONS, AND ELECTRONIC-STRUCTURE [J].

GRUNDMANN, M ;

STIER, O ;

BIMBERG, D .

PHYSICAL REVIEW B, 1995, 52 (16) :11969-11981

[4] Self-organized quantum dots and quantum dot lasers (invited) [J].

Ishikawa, H ;

Shoji, H ;

Nakata, Y ;

Mukai, K ;

Sugawara, M ;

Egawa, M ;

Otsuka, N ;

Sugiyama, Y ;

Futatsugi, T ;

Yokoyama, N .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1998, 16 (02) :794-800

[5] Evolution of Ge islands on Si(001) during annealing [J].

Kamins, TI ;

Medeiros-Ribeiro, G ;

Ohlberg, DAA ;

Williams, RS .

JOURNAL OF APPLIED PHYSICS, 1999, 85 (02) :1159-1171

[6] Spectroscopic characterization of the evolution of self-assembled CdSe quantum dots [J].

Kim, JC ;

Rho, H ;

Smith, LM ;

Jackson, HE ;

Lee, S ;

Dobrowolska, M ;

Merz, JL ;

Furdyna, JK .

APPLIED PHYSICS LETTERS, 1998, 73 (23) :3399-3401

[7] CLASSICAL INTERFACE MODES OF QUANTUM DOTS [J].

KNIPP, PA ;

REINECKE, TL .

PHYSICAL REVIEW B, 1992, 46 (16) :10310-10320

[8] Comment on "Dynamics of ripening of self-assembled II-VI semiconductor quantum dots" [J].

Kratzert, PR ;

Rabe, M ;

Henneberger, F .

PHYSICAL REVIEW LETTERS, 1999, 83 (01) :239-239

[9] Confinement and electron-phonon interactions of the E1 exciton in self-organized Ge quantum dots [J].

Kwok, SH ;

Yu, PY ;

Tung, CH ;

Zhang, YH ;

Li, MF ;

Peng, CS ;

Zhou, JM .

PHYSICAL REVIEW B, 1999, 59 (07) :4980-4984

[10] Comment on "Dynamics of ripening of self-assembled II-VI semiconductor quantum dots" -: Lee et al. reply [J].

Lee, S ;

Daruka, I ;

Kim, CS ;

Barabási, AL ;

Furdyna, JK ;

Merz, JL .

PHYSICAL REVIEW LETTERS, 1999, 83 (01) :240-240