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Title: Optimization of processing parameters on the controlled growth of ZnO nanorod arrays for the performance improvement of solid-state dye-sensitized solar cells

Abstract

High-transparency and high quality ZnO nanorod arrays were grown on the ITO substrates by a two-step chemical bath deposition (CBD) method. The effects of processing parameters including reaction temperature (25-95 {sup o}C) and solution concentration (0.01-0.1 M) on the crystal growth, alignment, optical and electrical properties were systematically investigated. It has been found that these process parameters are critical for the growth, orientation and aspect ratio of the nanorod arrays, showing different structural and optical properties. Experimental results reveal that the hexagonal ZnO nanorod arrays prepared under reaction temperature of 95 {sup o}C and solution concentration of 0.03 M possess highest aspect ratio of {approx}21, and show the well-aligned orientation and optimum optical properties. Moreover the ZnO nanorod arrays based heterojunction electrodes and the solid-state dye-sensitized solar cells (SS-DSSCs) were fabricated with an improved optoelectrical performance. -- Graphical abstract: The ZnO nanorod arrays demonstrate well-alignment, high aspect ratio (L/D{approx}21) and excellent optical transmittance by low-temperature chemical bath deposition (CBD). Display Omitted Research highlights: > Investigate the processing parameters of CBD on the growth of ZnO nanorod arrays. > Optimization of CBD process parameters: 0.03 M solution concentration and reaction temperature of 95 {sup o}C. > The prepared ZnO samples possessmore » well-alignment and high aspect ratio (L/D{approx}21). > An n-ZnO/p-NiO heterojunction: great rectifying behavior and low leakage current. > SS-DSSC has J{sub SC} of 0.31 mA/cm{sup 2} and V{sub OC} of 590 mV, and an improved {eta} of 0.059%.« less

Authors:
 [1];  [2]
  1. Department of Electronic Engineering, National United University, MiaoLi 36003, Taiwan (China)
  2. Department of Materials Science and Engineering, National United University, MiaoLi 36003, Taiwan (China)
Publication Date:
OSTI Identifier:
21504050
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 184; Journal Issue: 3; Other Information: DOI: 10.1016/j.jssc.2011.01.021; PII: S0022-4596(11)00022-3; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ASPECT RATIO; CRYSTAL GROWTH; DEPOSITION; DYES; ELECTRICAL PROPERTIES; HETEROJUNCTIONS; LEAKAGE CURRENT; NICKEL OXIDES; OPACITY; OPTIMIZATION; PERFORMANCE; SOLAR CELLS; SOLUTIONS; TEMPERATURE RANGE 0273-0400 K; ZINC OXIDES; CHALCOGENIDES; CURRENTS; DIMENSIONLESS NUMBERS; DIRECT ENERGY CONVERTERS; DISPERSIONS; ELECTRIC CURRENTS; EQUIPMENT; HOMOGENEOUS MIXTURES; MIXTURES; NICKEL COMPOUNDS; OPTICAL PROPERTIES; OXIDES; OXYGEN COMPOUNDS; PHOTOELECTRIC CELLS; PHOTOVOLTAIC CELLS; PHYSICAL PROPERTIES; SEMICONDUCTOR JUNCTIONS; SOLAR EQUIPMENT; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS; ZINC COMPOUNDS

Citation Formats

Lee, Yi-Mu, E-mail: ymlee@nuu.edu.t, and Yang, Hsi-Wen. Optimization of processing parameters on the controlled growth of ZnO nanorod arrays for the performance improvement of solid-state dye-sensitized solar cells. United States: N. p., 2011. Web. doi:10.1016/j.jssc.2011.01.021.
Lee, Yi-Mu, E-mail: ymlee@nuu.edu.t, & Yang, Hsi-Wen. Optimization of processing parameters on the controlled growth of ZnO nanorod arrays for the performance improvement of solid-state dye-sensitized solar cells. United States. doi:10.1016/j.jssc.2011.01.021.
Lee, Yi-Mu, E-mail: ymlee@nuu.edu.t, and Yang, Hsi-Wen. Tue . "Optimization of processing parameters on the controlled growth of ZnO nanorod arrays for the performance improvement of solid-state dye-sensitized solar cells". United States. doi:10.1016/j.jssc.2011.01.021.
@article{osti_21504050,
title = {Optimization of processing parameters on the controlled growth of ZnO nanorod arrays for the performance improvement of solid-state dye-sensitized solar cells},
author = {Lee, Yi-Mu, E-mail: ymlee@nuu.edu.t and Yang, Hsi-Wen},
abstractNote = {High-transparency and high quality ZnO nanorod arrays were grown on the ITO substrates by a two-step chemical bath deposition (CBD) method. The effects of processing parameters including reaction temperature (25-95 {sup o}C) and solution concentration (0.01-0.1 M) on the crystal growth, alignment, optical and electrical properties were systematically investigated. It has been found that these process parameters are critical for the growth, orientation and aspect ratio of the nanorod arrays, showing different structural and optical properties. Experimental results reveal that the hexagonal ZnO nanorod arrays prepared under reaction temperature of 95 {sup o}C and solution concentration of 0.03 M possess highest aspect ratio of {approx}21, and show the well-aligned orientation and optimum optical properties. Moreover the ZnO nanorod arrays based heterojunction electrodes and the solid-state dye-sensitized solar cells (SS-DSSCs) were fabricated with an improved optoelectrical performance. -- Graphical abstract: The ZnO nanorod arrays demonstrate well-alignment, high aspect ratio (L/D{approx}21) and excellent optical transmittance by low-temperature chemical bath deposition (CBD). Display Omitted Research highlights: > Investigate the processing parameters of CBD on the growth of ZnO nanorod arrays. > Optimization of CBD process parameters: 0.03 M solution concentration and reaction temperature of 95 {sup o}C. > The prepared ZnO samples possess well-alignment and high aspect ratio (L/D{approx}21). > An n-ZnO/p-NiO heterojunction: great rectifying behavior and low leakage current. > SS-DSSC has J{sub SC} of 0.31 mA/cm{sup 2} and V{sub OC} of 590 mV, and an improved {eta} of 0.059%.},
doi = {10.1016/j.jssc.2011.01.021},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = 3,
volume = 184,
place = {United States},
year = {2011},
month = {3}
}