Systematic Study of Transparent Conductors in the (Zinc, Gallium)-Indium-Tin Oxide Systems

1998 ◽  
Vol 508 ◽  
Author(s):  
George B. Palmer ◽  
Kenneth R. Poeppelmeier ◽  
Doreen D. Edwards ◽  
Thomas O. Mason
Keyword(s):  
Thin Film ◽  
Solid State ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Transparent Conducting Oxides ◽  
Transparent Conductors ◽  
Oxide Systems ◽  
Conducting Oxides ◽  
Transparent Conducting ◽  
State Processing

AbstractBulk samples of transparent conducting oxides (TCOs) in the Zn-In-Sn and Ga-In-Sn oxide systems were prepared by solid state processing. Phase relations and physical properties were determined and the results compared to similar measurements on thin film materials.

Next-Generation Transparent Conducting Oxides for Photovoltaic Cells: an Overview

2001 ◽  
Vol 668 ◽  
Author(s):  
David Ginley ◽  
Tim Coutts ◽  
John Perkins ◽  
David Young ◽  
Xiaonan Li ◽  
...  
Keyword(s):  
Thin Film ◽  
Transparent Conducting Oxides ◽  
Transparent Conductors ◽  
Critical Element ◽  
Antireflection Coatings ◽  
Photovoltaic Devices ◽  
Materials Properties ◽  
Conducting Oxides ◽  
Transparent Conducting ◽  
P Type

ABSTRACTTransparent conducting oxides (TCOs) are becoming a more critical element in thin-film photovoltaic devices. In the continued drive to increase efficiency and stability while reducing cost and optimizing performance, the optical, electrical, and materials properties of TCOs gain increasing importance. TCOs can perform a variety of important functions, including contacts, antireflection coatings, and chemical barriers. In this paper, we will review some of the current advances in the field of transparent conductors and, where possible, will relate these advances to thin-film photovoltaic devices. Highlights will be on the rapidly growing collection of new n- and p-type materials; the implications of these materials on PV have not been fully assessed.

Li4Ti5O12 and LiMn2O4 thin-film electrodes on transparent conducting oxides for all-solid-state and electrochromic applications

2016 ◽  
Vol 301 ◽  
pp. 35-40 ◽  
Author(s):  
Manuel Roeder ◽  
Alexis B. Beleke ◽  
Uwe Guntow ◽  
Johanna Buensow ◽  
Abdelbast Guerfi ◽  
...  
Keyword(s):  
Thin Film ◽  
Solid State ◽  
Transparent Conducting Oxides ◽  
Conducting Oxides ◽  
Transparent Conducting ◽  
Thin Film Electrodes

Thermoelectric Materials Discovery Using Combinatorial Chemistry

2011 ◽  
Vol 1315 ◽  
Author(s):  
Matin Amani ◽  
Ian Tougas ◽  
Otto J. Gregory
Keyword(s):  
Tin Oxide ◽  
Thermoelectric Materials ◽  
Indium Tin Oxide ◽  
Transparent Conducting Oxides ◽  
Combinatorial Libraries ◽  
Room Temperature Resistivity ◽  
Conducting Oxides ◽  
Transparent Conducting ◽  
Zinc Tin Oxide ◽  
Optical Applications

ABSTRACTTransparent conducting oxides have been previously investigated for both bulk and thin film thermoelectric applications, and have shown promising results due to their thermal stability and electrical conductivity. Alloys of two or more transparent conducting oxides have been deposited using pulsed laser deposition (PLD) and combinatorial sputtering, and the resulting films were optimized for optical applications. In this study, thermoelectric materials were prepared by co-sputtering techniques, whereby a chemical gradient was formed across an alumina substrate that was patterned using photolithography to form hundreds of micro-thermocouples. The systems indium tin oxide (ITO), indium zinc oxide (IZO), and zinc tin oxide (ZTO) were investigated for this purpose and the resulting combinatorial libraries were rapidly screened to establish room temperature resistivity, Seebeck coefficient, and power factor as functions of both composition and heat treatment, in nitrogen and air ambients. Due to their chemical stability, oxidation resistance, and large Seebeck coefficients relative to metal thermocouples, these materials are ideal for temperature measurement or energy harvesting in harsh environments such as gas turbine engines.

New transparent conductors anatase Ti1−xMxO2 (M=Nb,Ta): transport and optical properties

2005 ◽  
Vol 905 ◽  
Author(s):  
Yutaka Furubayashi ◽  
Taro Hitosugi ◽  
Yukio Yamamoto ◽  
Yasushi Hirose ◽  
Makoto Otani ◽  
...  
Keyword(s):  
Thin Film ◽  
Optical Properties ◽  
Room Temperature ◽  
Transparent Conducting Oxides ◽  
Transparent Conductors ◽  
Visible Light Region ◽  
Conducting Oxides ◽  
Transparent Conducting ◽  
Light Region ◽  
Film Form

AbstractWe have discovered new transparent conducting oxides (TCOs), anatase Ti1-xMxO2 (M=Nb,Ta), in thin film form. Both films with 0.03 ≤ × ≤ 0.06 showed resistivity of 2−3 × 10−4 Ωcm and internal transmittance of ∼95% in the visible light region (40 nm in thickness), at room temperature. These values are comparable to those of typical TCOs, such as In2−xSnxO3 (ITO).

Novel Texture Etch Chemistry for Transparent Conducting Oxides Used in Photovoltaic Cells

2012 ◽  
Vol 187 ◽  
pp. 329-332 ◽  
Author(s):  
Steven Verhaverbeke ◽  
Roman Gouk ◽  
Kurtis Leschkies ◽  
Robert Visser
Keyword(s):  
Thin Film ◽  
Acetic Acid ◽  
Metal Oxides ◽  
Light Trapping ◽  
Photovoltaic Cells ◽  
Transparent Conducting Oxides ◽  
The Sun ◽  
Conducting Oxides ◽  
Transparent Conducting ◽  
Acid Etch

In thin film photovoltaic silicon stacks, the sun facing contact needs to be transparent and textured. Typically transparent metal oxides are used for this purpose. When using sputtered ZnO as the transparent conducting contact typically an acid etch is used to texture etch the surface. This texturing enables light trapping in the cell and greatly enhances the photoresponse. Traditionally dilute HCl has been used for this purpose. In this paper we present the work on a novel etchant for this purpose consisting of HNO3 and Acetic Acid. This greatly enhances the texturing and hence the light trapping in the cell.

Chemical and Thin-Film Strategies for New Transparent Conducting Oxides

MRS Bulletin ◽  
2000 ◽  
Vol 25 (8) ◽  
pp. 45-51 ◽  
Author(s):  
A. J. Freeman ◽  
K. R. Poeppelmeier ◽  
T. O. Mason ◽  
R. P. H. Chang ◽  
T. J. Marks
Keyword(s):  
Thin Film ◽  
Research Effort ◽  
Transparent Conducting Oxides ◽  
Important Class ◽  
Film Research ◽  
Conducting Oxides ◽  
Transparent Conducting ◽  
Northwestern University ◽  
Fundamental Understanding ◽  
Technological Interest

Transparent conducting oxides (TCOs) have been known and employed technologically for more than 50 years, primarily in the form of doped single-cation oxides such as In2O3 and SnO2. Beginning in the 1990s, however, multi-cation oxide TCOs began to be developed in Japan (see the article by Minami in this issue and the references therein) and at the former Bell Laboratories. Since then, new TCO phases are being reported with increasing frequency as technological interest in this area heightens. At the same time, our fundamental understanding of the chemical and structural origins of transparent conductivity continues to expand and promises a pathway to dramatically improved materials for a host of applications. This article describes a collaborative, multi-investigator bulk an d thin-film research effort at Northwestern University aimed at the synthesis, characterization, and enhanced understanding of multi-cation (compound and solidsolution) TCOs, and provides a brief account of what we are discovering about this important class of materials.

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