Preparation and Characterization of Transparent Conducting Oxides Based on Zinc Oxide Co-Doped with Fluorine and Indium

2011 ◽  
Vol 9 (6) ◽  
pp. 2133-2136 ◽  
Author(s):  
A. Douayar ◽  
R. Diaz ◽  
F. Cherkaoui El Moursli ◽  
M. Abd-Lefdil
Keyword(s):  
Zinc Oxide ◽  
Transparent Conducting Oxides ◽  
Conducting Oxides ◽  
Transparent Conducting ◽  
Co Doped

Characterization of Transparent Conducting Oxides

MRS Bulletin ◽  
2000 ◽  
Vol 25 (8) ◽  
pp. 58-65 ◽  
Author(s):  
Timothy J. Coutts ◽  
David L. Young ◽  
Xiaonan Li
Keyword(s):  
United States ◽  
Optical Properties ◽  
Transparent Conducting Oxides ◽  
The United States ◽  
New Materials ◽  
Conducting Oxides ◽  
Transparent Conducting ◽  
Present Generation ◽  
Lower Sheet Resistance

As the areas of the major applications of transparent conducting oxides (TCOs) increase, demand will grow for materials having lower sheet resistance while retaining good optical properties. Simply increasing the film thickness is not acceptable because this would increase the optical absorptance. New materials must be developed with lower resistivities than previously achieved and with optical properties superior to those of the present generation of TCOs. This has now been recognized internationally, and novel materials are being investigated in Japan and the United States.

Density-of-States Effective Mass and Scattering Parameter Measurements on Transparent Conducting Oxides Using Second-Order Transport Phenomena

2000 ◽  
Vol 623 ◽  
Author(s):  
D. L. Young ◽  
T. J. Coutts ◽  
X. Li ◽  
J. Keane ◽  
V. I. Kaydanov ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Effective Mass ◽  
Density Of States ◽  
Transport Theory ◽  
Transparent Conducting Oxides ◽  
Impurity Scattering ◽  
Scattering Mechanism ◽  
Scattering Parameter ◽  
Conducting Oxides ◽  
Transparent Conducting

AbstractTransparent conducting oxides (TCO) have relatively low mobilities, which limit their performance optically and electrically, and which limit the techniques that may be used to explore their band structure via the effective mass. We have used transport theory to directly measure the density-of-states effective mass and other fundamental electronic properties of TCO films. The Boltzmann transport equation may be solved to give analytic solutions to the resistivity, Hall, Seebeck, and Nernst coefficients. In turn, these may be solved simultaneously to give the density-of-states effective mass, the Fermi energy relative to either the conduction or valence band, and a scattering parameter, s, which characterizes the relaxation time dependence on the carrier energy and can serve as a signature of the dominate scattering mechanism. The little-known Nernst effect is essential for determining the scattering parameter and, thereby, the effective scattering mechanism(s). We constructed equipment to measure these four transport coefficients on the same sample over a temperature range of 30 – 350 K for thin films deposited on insulating substrates. We measured the resistivity, Hall, Seebeck, and Nernst coefficients for rf magnetron-sputtered aluminum-doped zinc oxide. We found that the effective mass for zinc oxide increases from a minimum value of 0.24me, up to a value of 0.47me, at a carrier density of 4.5 × 1020 cm−3, indicating a nonparabolic conduction energy band. In addition, our measured density-of-states effective values are nearly equal to conductivity effective mass values estimated from the plasma frequency, denoting a single energy minimum with a nearly spherical, constant-energy surface. The measured scattering parameter, mobility vs. temperature, along with Seebeck coefficient values, characterize ionized impurity scattering in the ZnO:AI and neutral impurity scattering in the undoped material.

scholarly journals Properties of Al-doped zinc oxide and In-doped zinc oxide bilayer transparent conducting oxides for solar cell applications

2018 ◽  
Vol 222 ◽  
pp. 50-53 ◽  
Author(s):  
Marikkannan Murugesan ◽  
Dinesh Arjunraj ◽  
J. Mayandi ◽  
Vishnukanthan Venkatachalapathy ◽  
J.M. Pearce
Keyword(s):  
Zinc Oxide ◽  
Solar Cell ◽  
Transparent Conducting Oxides ◽  
Conducting Oxides ◽  
Transparent Conducting

Solution Synthesis and Characterization of Indium−Zinc Formate Precursors for Transparent Conducting Oxides

2010 ◽  
Vol 49 (12) ◽  
pp. 5424-5431 ◽  
Author(s):  
Robert M. Pasquarelli ◽  
Calvin J. Curtis ◽  
Alexander Miedaner ◽  
Maikel F.A.M. van Hest ◽  
Ryan P. O’Hayre ◽  
...  
Keyword(s):  
Transparent Conducting Oxides ◽  
Synthesis And Characterization ◽  
Solution Synthesis ◽  
Conducting Oxides ◽  
Transparent Conducting

Fundamental Advances in Transparent Conducting Oxides

2000 ◽  
Vol 623 ◽  
Author(s):  
Timothy J. Coutts ◽  
David L. Young ◽  
Xiaonan Li
Keyword(s):  
Zinc Oxide ◽  
Tin Oxide ◽  
Ternary Phase Diagram ◽  
Cadmium Oxide ◽  
Transparent Conducting Oxides ◽  
Early Years ◽  
Large Area ◽  
Scattering Parameter ◽  
Conducting Oxides ◽  
Transparent Conducting

AbstractIncreasingly large-volume markets for large-area, flat-panel displays and photovoltaic panels are likely to be established in the early years of the next century and transparent conducting oxides (TCOs) of improved opto-electronic properties will be required to enable some of these applications to be realized. Our work is focusing on improving both the fabrication-limited properties of the materials (extrinsic), and materials-limited properties (intrinsic). The emphasis on achieving improved electrical and optical properties hinges on achieving higher electron mobility via intrinsic and/or extrinsic properties. To this end, we have investigated the properties of several TCOs including cadmium oxide, tin oxide, zinc oxide, cadmium stannate and zinc stannate. These may be deposited by chemical vapor deposition (CVD) or sputtering and we hope to establish the capability to fabricate compounds and alloys in the cadmium oxide, tin oxide, zinc oxide ternary phase diagram.The properties of the materials have been investigated using a wide variety of techniques including high-resolution electron microscopy, atomic force microscopy and X-ray diffraction, as well as Mössbauer, Raman and UV/visible/NIR spectroscopies. We have measured the transport properties (conductivity, Hall, Seebeck and Nernst coefficients) and have obtained the effective mZLss, relaxation time, Fermi energy, and scattering parameter. This information has been obtained as a function of carrier concentration, which depends on the deposition and annealing procedures. We have found that the mobilities of free-electrons in the cadmiumbearing compounds are greatly superior to those in the other materials, because they have much longer electron relaxation times. In the case of cadmium oxide, there is also great benefit from a much lower effective mass. We are gaining a clearer understanding of the fundamental microscopic attributes needed for TCOs, which will be required in more-demanding, and rapidly emerging, applications.

Fabrication and characterization of multifunctional thin multi-layer films for transparent conducting oxides

2020 ◽  
Vol 149 ◽  
pp. 105976
Author(s):  
Muhammad Ramzan ◽  
Muhammad Imran ◽  
Saad Ullah ◽  
Muhammad Azhar Khan ◽  
Gul Naz ◽  
...  
Keyword(s):  
Transparent Conducting Oxides ◽  
Conducting Oxides ◽  
Transparent Conducting ◽  
Fabrication And Characterization

Room temperature transparent conducting oxides based on zinc oxide thin films

2011 ◽  
Vol 257 (12) ◽  
pp. 5181-5184 ◽  
Author(s):  
J. Clatot ◽  
G. Campet ◽  
A. Zeinert ◽  
C. Labrugère ◽  
A. Rougier
Keyword(s):  
Thin Films ◽  
Zinc Oxide ◽  
Room Temperature ◽  
Transparent Conducting Oxides ◽  
Oxide Thin Films ◽  
Conducting Oxides ◽  
Transparent Conducting
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