Structure determination and homogeneous optical properties of CdS/HgS quantum dots

被引：15

作者：

Mews, A

Banin, U

Kadavanich, AV

Alivisatos, AP

机构：

[1] HEBREW UNIV JERUSALEM, DEPT PHYS CHEM, IL-91904 JERUSALEM, ISRAEL

[2] UNIV CALIF BERKELEY, DEPT CHEM, BERKELEY, CA 94720 USA

[3] UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB,DIV MAT SCI, BERKELEY, CA 94720 USA

来源：

BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1997年 / 101卷 / 11期

关键词：

complex compounds; electron microscopy; nanocrystal; semiconductors; spectroscopy; visible;

D O I：

10.1002/bbpc.19971011111

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The structural and optical properties of heterogeneous semiconductor nanoparticles consisting of CdS and HgS are investigated by High Resolution Electron Microscopy (HRTEM) and selective spectroscopy like Hole Burning (HE) and Fluorescence Line Narrowing (FLN). The HRTEM study shows that epitaxy is possible in nanocrystals, provided the crystallites have well defined faceted shapes to begin with. From the HE-and FLN experiments homogeneous absorption and fluorescence spectra are calculated. It could be shown that the absorption is coupled to HgS-like phonons (250 cm(-1)) whereas the emission frequency is closer to the LO phonon frequency of CdS.

引用

页码：1621 / 1625

页数：5

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