RETRACTED: Low temperature method for synthesis of ZnS quantum dots and its luminescence characterization studies (Retracted article. See vol. 443, pg. 657, 2018)

被引：9

作者：

Senthilkumara, K. ^{[1
,2
]}

Kalaivani, T. ^{[2
]}

Kanagesan, S. ^{[4
]}

Balasubramanian, V. ^{[3
]}

机构：

[1] AMET Univ, Dept Phys, Madras 603112, Tamil Nadu, India

[2] SRM Univ, Dept Phys, Madras 603203, Tamil Nadu, India

[3] AMET Univ, Dept Chem, Madras 603112, Tamil Nadu, India

[4] Univ Putra Malaysia, Inst Adv Technol, Mat Synth & Characterizat Lab MSCL, Serdang 43400, Selangor, Malaysia

来源：

APPLIED SURFACE SCIENCE | 2013年 / 264卷

关键词：

ZnS quantum dots; Blue shift; Semiconductors; HRTEM; THIN-FILMS; OPTICAL-PROPERTIES; NANOPARTICLES; SIZE; NANOCRYSTALS; ABSORPTION; GROWTH; SURFACE; STATES;

D O I：

10.1016/j.apsusc.2012.09.026

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：

Zinc Sulfide (ZnS) quantum dots of sizes 2.68-4.8 nm, embedded on polyvinyl alcohol (PVA) matrix, have been synthesized at 70 degrees C by wet chemical method. X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM), UV-vis spectroscopy and photoluminescence (PL) Spectroscopy has been adopted for sample characterization. Optical absorption spectra showed strong blue shift, which is an indication of strong quantum confinement. Photoluminescence spectra of the sample have been recorded at room temperature and observed two peaks centred around 415 nm and 440 nm. We have assigned the first peak due to band gap transitions while the later due to sulfur vacancy in the sample. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：17 / 20

页数：4

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