Properties of CuInS2 Nano-Particles on TiO2 by Spray Pyrolysis for CuInS2/TiO2 Composite Solar Cell.
J Nanosci Nanotechnol
; 17(4): 2728-731, 2017 Apr.
Article
en En
| MEDLINE
| ID: mdl-29664592
In this letter, for the absorption layer of a CuInS2/TiO2 composite solar cell, IIIIVI2 chalcopyrite semiconductor CuInS2 nano-particles were deposited by using spray pyrolysis method on TiO2 porous film. Their material characteristics including structural and optical properties of CuInS2 nano-particles on TiO2 nanorods were analyzed as a function of its composition ratios of Cu:In:S. Crystalline structure, surface morphology and crystalline size were also investigated by X-ray Diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM), and High-Resolution TEM (HRTEM), respectively. On the other hand, optical property was characterized by an UV-Visible Spectrophotometer. As a result, it was found that the size of CuInS2 nano-particles, which was formed at 300±5 °C, was smaller than 16 nm from HRTEM analyses, and it was identified that the CuInS2 particle size was increased as increasing the heat-treatment temperature and time. However, as the size of CuInS2 nano-particle becomes smaller, optical absorption edge of ternary compound film tends to move to the blue wavelength band. It turns out that the optical energy-band gap of the compound films was ranging from 1.48 eV to 1.53 eV.
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Colección:
01-internacional
Base de datos:
MEDLINE
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
J Nanosci Nanotechnol
Año:
2017
Tipo del documento:
Article
Pais de publicación:
Estados Unidos