Photoluminescence properties of PbSe/PbS core-shell quantum dots

被引：1

作者：

Maikov, Georgy I. ^{[1
]}

Vaxenburg, Roman ^{[1
]}

Yanover, Diana ^{[1
]}

Kigel, Ariel ^{[1
]}

Sashchiuk, Aldona ^{[1
]}

Lifshitz, Efrat ^{[1
]}

机构：

[1] Technion Israel Inst Technol, Schulich Fac Chem, Russell Berrie Nanotechnol Inst, IL-32000 Haifa, Israel

来源：

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 6, NO 12 | 2009年 / 6卷 / 12期

关键词：

NANOCRYSTALS;

D O I：

10.1002/pssc.200982565

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The present study describes the investigation of the ground-state exciton emission in the PbSe/PbS core-shell colloidal quantum dots (CQDs) with different core-radius/shell-thickness ratio, by recording temperature dependence of ground-state exciton photoluminescence (PL) properties, including line-width, integrated PL intensity, and the temperature coefficient of energy band-gap, over a temperature range from 1.4 K to 300 K. The obtained data reveal a reduction of the temperature coefficient of the energy band-gap as well as slightly decrease of exciton and optical phonon coupling in the PbSe/PbS core-shell CQDs with respect to that in the corresponding PbSe core. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：2716 / 2718

页数：3

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