Optical and Raman scattering studies on SnS nanoparticles

被引：179

作者：

Sohila, S. ^{[2
]}

Rajalakshmi, M. ^{[1
]}

Ghosh, Chanchal ^{[3
]}

Arora, A. K.

Muthamizhchelvan, C. ^{[2
]}

机构：

[1] Indira Gandhi Ctr Atom Res, Condensed Matter Phys Div, Mat Sci Grp, Kalpakkam 603102, Tamil Nadu, India

[2] SRM Univ, Dept Phys, Ctr Mat Sci & Nano Devices, Madras 603203, Tamil Nadu, India

[3] Indira Gandhi Ctr Atom Res, Div Phys Met, Kalpakkam 603102, Tamil Nadu, India

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 19期

关键词：

Nanostructured materials; Semiconductors; Chemical synthesis; Optical properties; Phonons; HYDROTHERMAL SYNTHESIS; PRESSURE-DEPENDENCE; SULFIDE; DEPOSITION; ELECTRON; SIZE;

D O I：

10.1016/j.jallcom.2011.02.141

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：

Tin sulfide nanoparticles were synthesized through wet chemical route. Structure and phase purity were confirmed by powder XRD. Morphology and size were identified from TEM and AFM. The room temperature photoluminescence spectrum shows the band edge emission at 1.57 eV. The direct and indirect band gaps are estimated from UV-vis-NIR absorption spectrum as 1.78 and 1.2 eV, respectively. Blue shift of 0.48 eV observed for direct transition and 0.2 eV for indirect transition as compared to bulk band gap is due to quantum confinement effect. The Raman spectrum of SnS nanoparticles shows all the predicted Raman modes which show shift towards lower wave number side in comparison with those of the SnS single crystal. This is attributed to phonon confinement. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：5843 / 5847

页数：5

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