Synthesis route and optical characterization of CdS:Mn/polyvinyl alcohol nanocomposite

被引：13

作者：

Fediv, V. I. ^{[1
]}

Rudko, G. Yu. ^{[2
]}

Savchuk, A. I. ^{[3
]}

Gule, E. G. ^{[2
]}

Voloshchuk, A. G. ^{[3
]}

机构：

[1] Bukovyna State Med Univ, 42 Kobylyanska Str, UA-58012 Chernovtsy, Ukraine

[2] NAS Ukraine, V Lashkaryov Inst Semicond Phys, UA-03028 Kiev, Ukraine

[3] Chernivtsi Natl Univ, UA-58012 Chernovtsy, Ukraine

来源：

SEMICONDUCTOR PHYSICS QUANTUM ELECTRONICS & OPTOELECTRONICS | 2012年 / 15卷 / 02期

关键词：

nanoparticle; semimagnetic semiconductor; polyvinyl alcohol; photoluminescence;

D O I：

10.15407/spqeo15.02.117

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

CdS nanoparticles doped with Mn have been synthesized in aqueous solution by using polyvinyl alcohol (PVA) as a capping reagent. Influence of the polymer concentration on the size and concentration of the nanoparticles was studied using transmission electron microscopy and optical absorption. Incorporation of Mn2+ ions into CdS nanoparticles was confirmed by photoluminescence (PL) intensity increase and band shift with Mn concentration. The PL studies proved that localization of Mn ions (inside the nanoparticles or on the surface) depends on the sequence of synthesis steps. The bleaching of the low-energy PL band of the low-doped CdS:Mn nanoparticles by surface modification with a Cd(OH)(2) layer proves suppression of the emission related to surface states.

引用

页码：117 / 123

页数：7

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