Growth and thermal properties of various In^sub 2^Se^sub 3^ nanostructures prepared by single step PVD technique

In2Se3 nanostructures have attracted much attention due to their potential applications in diverse areas, such as solar energy conversion, thermoelectric power generation, phase change random access memories, photodetectors, and optoelectronics in the visible region. In the present work, we have fab...

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Bibliographic Details
Published in:Journal of alloys and compounds 2019-01, Vol.773, p.698
Main Authors: Botcha, V Divakar, Hong, Yuehua, Huang, Zhonghui, Li, Zhiwen, Liu, Qiang, Wu, Jing, Lu, Youming, Liu, Xinke
Format: Article
Language:English
Subjects:
Electron phonon interactions
Flowers
Heat conductivity
Morphology
Nanoparticles
Nanospheres
Nanostructure
Nanostructured materials
Optoelectronics
Phase transitions
Photoelectrons
Physical vapor deposition
Raman spectroscopy
Random access
Scanning electron microscopy
Silicon dioxide
Silicon substrates
Solar energy conversion
Substrates
Temperature dependence
Thermal conductivity
Thermodynamic properties
Thermoelectric power generation
X ray photoelectron spectroscopy
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Summary:In2Se3 nanostructures have attracted much attention due to their potential applications in diverse areas, such as solar energy conversion, thermoelectric power generation, phase change random access memories, photodetectors, and optoelectronics in the visible region. In the present work, we have fabricated various In2Se3 nanostructures on SiO2/Si substrate using a simple and single-step physical vapor deposition (PVD) method, without using metal seed layer on the substrates. Morphology, structure and phase of the as-grown In2Se3 nanostructures have been carried out using scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy, respectively. In addition, we have also explored thermal properties of In2Se3 nanostructures on SiO2/Si substrate using temperature and power dependent Raman spectroscopy. Further, the thermal conductivity of nanoparticles, nanospheres, and rod like flowers at room temperature were found to be ∼37.6, ∼39.5, and ∼15.6 W/m-K, respectively. This work suggests an effective way to form various novel nanostructures, opening up a new scenario to understand the vibrational properties and electron-phonon interactions of In2Se3 nanostructures.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2018.09.335