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Fabrication of Double-Layered TiO2 Films with Nanosphere Light Scatterers by One-Step Soaking Method

Title
Fabrication of Double-Layered TiO2 Films with Nanosphere Light Scatterers by One-Step Soaking Method
Author(s)
Park, Mi SunSung, Shi-JoonKim, Dae-Hwan
Issued Date
2015-10
Citation
Journal of Nanoscience and Nanotechnology, v.15, no.10, pp.7781 - 7786
Type
Article
Author Keywords
TiO2NanostructureDouble LayerNanosphereSoaking Method
Keywords
Conversion EfficiencyDouble LayerDouble Layered StructureDouble LayersFilm PreparationLight ScatteringNanoparticle SynthesisNANOPARTICLESNanosphereNanospheresNanostructureNanostructuresPhotoelectrodeReactant ConcentrationsReaction TemperatureSENSITIZED SOLAR-CELLSSensitized Solar CellsSoaking MethodSPHERESSynthesis (Chemical)TiOTiO2Titanium Dioxide
ISSN
1533-4880
Abstract
Nanostructured TiO2 films with a double-layered structure are prepared by a facile one-step soaking method. We have investigated the morphology of nanostructured TiO2 films according to the reaction time, concentration of the reactant, and reaction temperature of the soaking reaction, which all have a significant effect on the thickness and layered-structure of the nanostructured TiO2 films. The TiO2 films prepared by this soaking method have a unique double-layered structure, which is composed of a dense TiO2 bottom layer and stacked TiO2 nanospheres on the top layer. The growth of TiO2 nanospheres on the top of the double-layered TiO2 films shows stepwise behavior, which means there are two different growth mechanisms resulting in the dense TiO2 bottom layer and the spherical TiO2 top layer. There is an optimum reactant concentration and reaction temperature for achieving double-layered TiO2 films, which can be explained by the theory of nanoparticle synthesis. The stacked TiO2 nanospheres of double-layered TiO2 films contribute to the light scattering effects of TiO2 films, which could be used for the performance improvement of TiO2 photoelectrodes for sensitized solar cells. Copyright © 2015 American Scientific Publishers All rights reserved.
URI
http://hdl.handle.net/20.500.11750/2843
DOI
10.1166/jnn.2015.11131
Publisher
American Scientific Publishers
Related Researcher
  • 성시준 Sung, Shi-Joon
  • Research Interests Thin Film Solar Cells; 박막태양전지; Compound Semiconductor Materials & Processes; 화합물 반도체 재료 및 공정; Optoelectronic Devices based on Micro-Optical Structures; 미세 광학 구조 기반 광전자소자; Organic/Inorganic/Metallic Hybrid Thin Films & Applications; 유무기금속 하이브리드 박막
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Division of Energy & Environmental Technology 1. Journal Articles

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