Size effects on the phonon spectra of quantum dots in CdTe-doped glasses

被引：54

作者：

dePaula, AM

Barbosa, LC

Cruz, CHB

Alves, OL

Sanjurjo, JA

Cesar, CL

机构：

[1] Instituto de Física, Universidade Estadual de Campinas, 13083-970 Campinas-SP

[2] Instituto de Química, Universidade Estadual de Campinas, 13083-970 Campinas-SP

来源：

APPLIED PHYSICS LETTERS | 1996年 / 69卷 / 03期

关键词：

D O I：

10.1063/1.118059

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We studied the confinement effects on the phonon Spectra of CdTe quantum dots by means of resonant Raman scattering measurements. The spectra show clearly longitudinal optical phonons, surface phonons and some of their overtone combinations. We show that the scattering due to surface phonons increases as the quantum dot size decreases. The results are obtained by tuning the laser excitation energy to resonance for quantum dots of different sizes inside the broad size distribution in CdTe-doped glasses. (C) 1996 American Institute of Physics.

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页码：357 / 359

页数：3

相关论文

共 28 条

[11] QUANTUM SIZE EFFECTS AND OPTICAL NONLINEARITY OF CONFINED EXCITONS IN SEMICONDUCTING MICROCRYSTALLITES [J].

NAKAMURA, A ;

TOKIZAKI, T ;

AKIYAMA, H ;

KATAOKA, T .

JOURNAL OF LUMINESCENCE, 1992, 53 (1-6) :105-109

[12] QUANTUM SIZE EFFECTS ON CDTEXS1-X SEMICONDUCTOR-DOPED GLASS [J].

NETO, JAM ;

BARBOSA, LC ;

CESAR, CL ;

ALVES, OL ;

GALEMBECK, F .

APPLIED PHYSICS LETTERS, 1991, 59 (21) :2715-2717

[13] MEASUREMENT OF THE SIZE-DEPENDENT HOLE SPECTRUM IN CDSE QUANTUM DOTS [J].

NORRIS, DJ ;

SACRA, A ;

MURRAY, CB ;

BAWENDI, MG .

PHYSICAL REVIEW LETTERS, 1994, 72 (16) :2612-2615

[14] NONLINEAR OPTICAL PROPERTY OF CDTE MICROCRYSTALLITES DOPED GLASSES FABRICATED BY LASER EVAPORATION METHOD [J].

OHTSUKA, S ;

KOYAMA, T ;

TSUNETOMO, K ;

NAGATA, H ;

TANAKA, S .

APPLIED PHYSICS LETTERS, 1992, 61 (25) :2953-2954

[15] STUDIES OF HIGH-SPEED OPTICAL SWITCHING IN CDSE [J].

PATON, CR ;

XIE, Z ;

HVAM, JM .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1990, 7 (07) :1225-1230

[16] PHONON BROADENING AND SPECTRAL HOLE BURNING IN VERY SMALL SEMICONDUCTOR PARTICLES [J].

ROUSSIGNOL, P ;

RICARD, D ;

FLYTZANIS, C ;

NEUROTH, N .

PHYSICAL REVIEW LETTERS, 1989, 62 (03) :312-315

[17] THERMAL FLUCTUATIONS AND RAMAN-SCATTERING IN SMALL SPHERICAL CRYSTALS [J].

RUPPIN, R .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1975, 8 (12) :1969-1978

[18] OPTICAL PHONONS OF SMALL CRYSTALS [J].

RUPPIN, R ;

ENGLMAN, R .

REPORTS ON PROGRESS IN PHYSICS, 1970, 33 (02) :149-+

[19] SIZE-DEPENDENT LATTICE CONTRACTION IN CDS1-XSEX NANOCRYSTALS EMBEDDED IN GLASS OBSERVED BY RAMAN-SCATTERING [J].

SCAMARCIO, G ;

LUGARA, M ;

MANNO, D .

PHYSICAL REVIEW B, 1992, 45 (23) :13792-13795

[20] THEORY OF THE LINEAR AND NONLINEAR OPTICAL-PROPERTIES OF SEMICONDUCTOR MICROCRYSTALLITES [J].

SCHMITTRINK, S ;

MILLER, DAB ;

CHEMLA, DS .

PHYSICAL REVIEW B, 1987, 35 (15) :8113-8125