High mobility oxides: Engineered structures to overcome intrinsic performance limitations of transparent conducting oxides

2003 ◽  
Vol 83 (19) ◽  
pp. 3933-3935 ◽  
Author(s):  
Joshua J. Robbins ◽  
Colin A. Wolden
Keyword(s):  
Transparent Conducting Oxides ◽  
High Mobility ◽  
Conducting Oxides ◽  
Transparent Conducting ◽  
Engineered Structures ◽  
Performance Limitations

Measurement of the Effective Mass of Transparent Conducting films of Cadmium Tin Oxide

1997 ◽  
Vol 471 ◽  
Author(s):  
W. P. Mulligan ◽  
T. J. Coutts
Keyword(s):  
Relaxation Time ◽  
Effective Mass ◽  
Transparent Conducting Oxides ◽  
High Mobility ◽  
Carrier Relaxation ◽  
Conducting Oxides ◽  
Transparent Conducting Films ◽  
Transparent Conducting ◽  
Carrier Effective Mass ◽  
Cadmium Stannate

ABSTRACTWe have prepared transparent conducting films of cadmium stannate (Cd2SnO4 with resistivity as low as 1.5×10-4 Ω cm. The resistivity of these films is low because of their surprisingly high mobility (60 cm2 V-1 sec-1) at high carrier concentration (7×1020cm-3). We conducted an investigation to determine whether the high mobility is due to unusually low carrier effective mass or to a long carrier relaxation time. The conductivity effective mass and relaxation time were estimated by Drude free-electron modeling of reflectance and transmittance spectroscopie measurements. The Drude model appears to represent the behavior of cadmium tin oxide very well. The optical effective mass of the electrons in cadmium stannate is about 0.35 mo, which is similar to that of other transparent conducting oxides. By varying the doping level, we were able to fabricate films with various levels of degeneracy, but these showed no significant difference in effective mass.We were also able to determine the carrier effective mass and the relaxation time by measuring four separate electron transport coefficients: conductivity, Hall, Seebeck, and transverse Nernst-Ettingshausen (Nernst). The Fermi level was found to vary from 0.31 to 0.83 eV above the conduction band minimum, and the conduction band was very close to parabolic in this range, with m* ∼ 0.33 mo, in good agreement with the optical result. We conclude that the effective mass of electrons in cadmium stannate is similar to electrons in other transparent conducting oxides and that high mobility results from a relatively long carrier relaxation time.

scholarly journals Perovskite oxides as transparent semiconductors: a review

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Haiying He ◽  
Zhihao Yang ◽  
Yonghang Xu ◽  
Andrew T. Smith ◽  
Guangguang Yang ◽  
...  
Keyword(s):  
Transparent Conducting Oxides ◽  
High Mobility ◽  
Perovskite Oxides ◽  
High Carrier Concentration ◽  
Trade Off ◽  
Conducting Oxides ◽  
Transparent Conducting ◽  
High Carrier ◽  
P Type ◽  
Transparent Semiconductors

Abstract Traditional transparent conducting oxides (TCOs) have been widely used for various optoelectronic applications, but have the trade-off between conductivity and transmittance. Recently, perovskite oxides, with structural and chemical stability, have exhibited excellent physical properties as new TCOs. We focus on SrVO3-based perovskites with a high carrier concentration and BaSnO3-based perovskites with a high mobility for n-type TCOs. In addition, p-type perovskites are discussed, which can serve as potential future options to couple with n-type perovskites to design full perovskite based devices.

MoOx modified ZnGaO based transparent conducting oxides

2009 ◽  
Vol 105 (5) ◽  
pp. 053704 ◽  
Author(s):  
Titas Dutta ◽  
P. Gupta ◽  
V. Bhosle ◽  
J. Narayan
Keyword(s):  
Transparent Conducting Oxides ◽  
Conducting Oxides ◽  
Transparent Conducting

scholarly journals Organic electro-optic modulator using transparent conducting oxides as electrodes

2005 ◽  
Vol 13 (19) ◽  
pp. 7380 ◽  
Author(s):  
Guoyang Xu ◽  
Zhifu Liu ◽  
Jing Ma ◽  
Boyang Liu ◽  
Seng-Tiong Ho ◽  
...  
Keyword(s):  
Transparent Conducting Oxides ◽  
Conducting Oxides ◽  
Transparent Conducting ◽  
Electro Optic ◽  
Electro Optic Modulator
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