Angle dependent X-ray photoemission study on UV-ozone treatments of indium tin oxide

2001 ◽  
Vol 177 (3) ◽  
pp. 158-164 ◽  
Author(s):  
Weijie Song ◽  
S.K So ◽  
Daoyuan Wang ◽  
Yong Qiu ◽  
Lili Cao
2002 ◽  
Vol 747 ◽  
Author(s):  
H. H. Fong ◽  
W. J. Song ◽  
S. K. So

ABSTRACTThe surface properties of indium-tin-oxide (ITO) thin films treated by UV ozone or plasma were analyzed by angular dependent X-ray photoelectron spectroscopy (ADXPS) and by ultraviolet photoemission (UPS). The chemical composition, chemical states and the work function of the ITO surfaces were deduced. Our analysis indicate that ITO surface is Sn-rich. Both UV ozone and O-plasma treatments are most effective in removing surface hydrocarbon. Among all treatments, O-plasma treated surface achieved the highest work function of 4.4eV, whereas argon ion sputtered surface had the lowest work function of 3.9eV. Both O-plasma and UV ozone treatments increase the surface oxygen concentration. It is proposed that O2-ions diffuse into ITO. The diffusion length is about 50Å as deduced from ADXPS. The stoichiometry of the surface is the major factor in controlling the surface work function of ITO. A surface band bending model is proposed to account for the change of work function due to “oxidized” ITO surface after UV-ozone or oxygen plasma treatments.


2000 ◽  
Vol 88 (9) ◽  
pp. 5180-5187 ◽  
Author(s):  
V. Christou ◽  
M. Etchells ◽  
O. Renault ◽  
P. J. Dobson ◽  
O. V. Salata ◽  
...  

2018 ◽  
Vol 61 ◽  
pp. 343-350 ◽  
Author(s):  
Dong Hyun Kim ◽  
Won Ho Lee ◽  
P. Justin Jesuraj ◽  
Hassan Hafeez ◽  
Jong Chan Lee ◽  
...  

2019 ◽  
Vol 801 ◽  
pp. 211-216
Author(s):  
Muhammad Umair Khan ◽  
Gul Hassan ◽  
Muhammad Asim Raza ◽  
Jin Ho Bae

In this work, we synthesize Hafnium (IV) oxide (HfO2) ink from hafnium chloride (HfCl4) powder assisted with deionized water. The poly acrylic acid (PAA) is used as surfactant to decrease the surface tension. Conversion of HfCl4 into HfO2 was detected by Raman spectroscopy and energy dispersive X-ray spectroscopy (EDS) characterization techniques. This proposed ink can be easily synthesized at a low temperature. Using the synthesis ink, a liquid capacitor is proposed, which is tested for electrochemical analysis. Indium tin oxide (ITO) coated PET is used as bottom and top current collector electrode, polydimethylsiloxane (PDMS) mold is used as separator, and HfO2 ink is used as aqueous electrolyte. Liquid capacitor is also tested on different bending diameters using bending machine from flat down to 10 mm bending curvature, which shows a stable capacitor function.


2013 ◽  
Vol 721 ◽  
pp. 33-36 ◽  
Author(s):  
Hong Cheng Pan ◽  
Xue Peng Li ◽  
Wei Hong Liu ◽  
Yan Bin Ren

ZnS thin films were deposited on indium–tin-oxide (ITO) coated glass substrates by a chemical bath deposition method. Then the ZnS/ITO slides were immersed in the solution containing 6 mM phosphate buffer solution (pH 7.4), sodium polyacrylate (0.01% w/w), and 0.24 mM AgNO3 at 37°C for 3 h to growth Ag2S films on the surface of ZnS/ITO slides. The absorption band of Ag2S/ZnS/ITO slide displays a considerably blue-shifted. The X-ray diffraction analysis demonstrated the presence of acanthite Ag2S on the surface of ZnS/ITO slides, which is consistent with the cyclic voltammetic data.


2005 ◽  
Vol 54 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Bagas Pujilaksono ◽  
Uta Klement ◽  
Lars Nyborg ◽  
Urban Jelvestam ◽  
Sven Hill ◽  
...  

2013 ◽  
Vol 311 ◽  
pp. 430-434
Author(s):  
Kuo Chin Hsu ◽  
Jiunn Der Liao ◽  
Zheng Zhong Xie ◽  
Yaw Shyan Fu

The cubic and rod-shaped powders of indium tin oxide were synthesized at a stable temperature reaction for 18h using the surfactant aid hydrothermal method under various conditions. The cubic and rod-shaped powder size changes with the concentration of the precursor. The finished products of indium tin oxide can be obtained by calcination at 500°C for 2h in air. Characterization was conducted using scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), X-ray diffractometry (XRD), thermogravimetric analyzer/differential thermal analysis (TG/DTA) and the Brunauer-Emmett-Teller (BET). XRD analysis shows that the conditions of this experiment can produce pure ITO powders. The characterization of cubic and rod-shaped ITO powders is also discussed.


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