Highly Infrared Reflective Behavior of Transparent Conductive ZnO:Ga Films Synthesized by DC Reactive Magnetron Sputtering

Ma, Qianyun; Ye, Zhizhen; He, Haiping; Luo, Youyou; Zhu, Liping; Huang, Jingyun; Zhang, Yinzhu; Zhao, Binghui

doi:10.1002/cphc.200700604

Cited by 12 publications

(6 citation statements)

References 30 publications

(27 reference statements)

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“…The decrease is very pronounced for low Ga concentrations, while for higher doping levels, the incremental resistance change is not as large. Previous studies on Ga- or Al-doped ZnO films deposited by sputtering,sol–gel, colloidal techniques, microwave irradiation, pulsed laser deposition, and CVD revealed that the electrical properties of doped ZnO samples depend on the dopant concentration but without a definite trend, since the highest conductivity can be achieved with dopant amounts between 0.5% and 6%, according to the specific synthetic procedure.…”

Section: Resultsmentioning

confidence: 99%

Low-Temperature Processed Ga-Doped ZnO Coatings from Colloidal Inks

et al. 2013

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We present a new colloidal synthesis of gallium-doped zinc oxide nanocrystals that are transparent in the visible and absorb in the near-infrared. Thermal decomposition of zinc stearate and gallium nitrate after hot injection of the precursors in a mixture of organic amines leads to nanocrystals with tunable properties according to gallium amount. Substitutional Ga(3+) ions trigger a plasmonic resonance in the infrared region resulting from an increase in the free electrons concentration. These nanocrystals can be deposited by spin coating, drop casting, and spray coating resulting in homogeneous and high-quality thin films. The optical transmission of the Ga-ZnO nanoparticle assemblies in the visible is greater than 90%, and at the same time, the near-infrared absorption of the nanocrystals is maintained in the films as well. Several strategies to improve the films electrical and optical properties have been presented, such as UV treatments to remove the organic compounds responsible for the observed interparticle resistance and reducing atmosphere treatments on both colloidal solutions and thin films to increase the free carriers concentration, enhancing electrical conductivity and infrared absorption. The electrical resistance of the nanoparticle assemblies is about 30 kΩ/sq for the as-deposited, UV-exposed films, and it drops down to 300 Ω/sq after annealing in forming gas at 450 °C, comparable with state of the art tin-doped indium oxide coatings deposited from nanocrystal inks.

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Section: Resultsmentioning

confidence: 99%

Low-Temperature Processed Ga-Doped ZnO Coatings from Colloidal Inks

et al. 2013

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“…To assess the quality of the as-deposited Cu 2 O films, the fullwidth at half-maximum (FWHM) values of the (111) peaks were used to determine the crystallite size according to the Scherrer formula [30,31]. The FWHM and the grain size as a function of pH are shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Cu2O photoelectrodes for solar water splitting: Tuning photoelectrochemical performance by controlled faceting

Hofmann

Litke

et al. 2015

Solar Energy Materials and Solar Cells

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“…A THM is formed as a thin film on the surface of a glass substrate. − THMs are used to reduce electrical power consumption in energy-efficient buildings, greenhouses, and energy-saving cars because they block external IR rays in hot climates and preserve internal heat in cold climates. Oxide materials, such as indium tin oxide (ITO), − ,, TiO 2 , ,, WO 3 , , HfO 2 , ZnO, , (Al, Ga)-doped ZnO, − and MoO 3 , which exhibit high visible light transmittance but relatively low IR blocking properties have been studied for use in THMs.…”

Section: Introductionmentioning

confidence: 99%

Self-Cleaning Transparent Heat Mirror with a Plasma Polymer Fluorocarbon Thin Film Fabricated by a Continuous Roll-to-Roll Sputtering Process

Kim

Lee

et al. 2018

ACS Appl. Mater. Interfaces

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This paper proposes a novel self-cleaning transparent heat mirror (SC-THM) produced by depositing a plasma polymer fluorocarbon thin film on a silver-and-SiN multilayer structure fabricated by continuous roll-to-roll sputtering. The optimal structure and the thickness of each thin film of three-layer and five-layer SC-THMs were derived from optical simulation. In the five-layer SC-THM, the visible light transmittance was 60.67% at a wavelength of 406 nm and the infrared (IR) transmittance was 6.86% at a 1000 nm wavelength and 2.50% at a 1500 nm wavelength. The value of the performance parameter T/ T was 1.70. The SC-THM exhibited self-cleaning with a very good water repellency of more than 111°, achieved by applying a low-surface-energy fluorocarbon thin film to the top layer. This study successfully demonstrated the IR blocking properties of an SC-THM through IR reflection and IR irradiation experiments.

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Highly Infrared Reflective Behavior of Transparent Conductive ZnO:Ga Films Synthesized by DC Reactive Magnetron Sputtering

Cited by 12 publications

References 30 publications

Low-Temperature Processed Ga-Doped ZnO Coatings from Colloidal Inks

Low-Temperature Processed Ga-Doped ZnO Coatings from Colloidal Inks

Cu2O photoelectrodes for solar water splitting: Tuning photoelectrochemical performance by controlled faceting

Self-Cleaning Transparent Heat Mirror with a Plasma Polymer Fluorocarbon Thin Film Fabricated by a Continuous Roll-to-Roll Sputtering Process

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