Energy bandgap variation in oblique angle-deposited indium tin oxide

2016 ◽  
Vol 108 (4) ◽  
pp. 041910 ◽  
Author(s):  
Kyurin Kim ◽  
Jun Hyuk Park ◽  
Hyunsoo Kim ◽  
Jong Kyu Kim ◽  
E. Fred Schubert ◽  
...  
Keyword(s):  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Oblique Angle ◽  
Energy Bandgap

scholarly journals PEDOT:PSS in Water and Toluene for Organic Devices—Technical Approach

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 565 ◽  
Author(s):  
Beata Jewłoszewicz ◽  
Krzysztof A. Bogdanowicz ◽  
Wojciech Przybył ◽  
Agnieszka Iwan ◽  
Ireneusz Plebankiewicz
Keyword(s):  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Spin Coating ◽  
Surface Defects ◽  
Water Solution ◽  
Dipole Moments ◽  
Spray Coating ◽  
Dielectric Constants ◽  
Technical Parameters ◽  
Energy Bandgap

Poly(3,4-ethylenedioxythiophene:poly(styrenesulfonate) (PEDOT:PSS) water and toluene solutions were investigated in detail, taking into consideration their stability, wettability, transparency, and electrochemical properties, along with change polarity caused by dopant. As dopant, methanol, ethanol, and isopropanol were used with different dipole moments (1.70, 1.69, and 1.66 D) and dielectric constants (33.0, 24.5, and 18.0). Three techniques, i.e., spin coating, doctor blade coating, and spray coating, were employed to created PEDOT:PSS layers on glass, glass/indium tin oxide (ITO), and glass/fluorine-doped tin oxide (FTO) substrates with optimized technical parameters for each used equipment. All used PEDOT:PSS water and toluene solutions demonstrated good wetting properties with angles below 30° for all used surfaces. Values of the energy bandgap (Eg) of PEDOT:PSS investigated by cyclic voltammetry (CV) in solution showed increase energy Eg along with addition of alcohol to the mixture, and they were found in the range of 1.20 eV to 2.85 eV. The opposite tendency was found for the Eg value of the PEDOT:PSS layer created from water solution. The storage effect on PEDOT:PSS layers detected by CV affected only the lowest unoccupied molecular orbital (LUMO) level, thereby causing changes in the energy bandgap. Finally, simple devices were constructed and investigated by infrared (IR) thermographic camera to investigate the surface defects on the created PEDOT:PSS layers. Our study showed that a more stable PEDOT:PSS layer without pin-holes and defects can be obtained from water and toluene solutions with isopropanol via the spin coating technique with an optimal speed of 3000 rpm and time of 90 s.

Optical and electrical properties of indium tin oxide thin films with tilted and spiral microstructures prepared by oblique angle deposition

2008 ◽  
Vol 23 (9) ◽  
pp. 2500-2505 ◽  
Author(s):  
Y. Zhong ◽  
Y.C. Shin ◽  
C.M. Kim ◽  
B.G. Lee ◽  
E.H. Kim ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Incident Angle ◽  
Oblique Angle Deposition ◽  
Optical And Electrical Properties ◽  
Oblique Angle ◽  
Angle Deposition ◽  
Flux Incident

The optical and electrical properties of “tilted” and “spiral” indium tin oxide (ITO) thin films are reported. The influence of the flux incident angle on the optical and electrical properties is investigated. When the flux incident angle is increased, both the refractive index and extinction coefficient of the film are decreased, but the resistivity is increased. Thus, the physical properties of the film can be modified over a wide range by adjusting the flux incident angle and substrate rotation scheme. It is suggested that the oblique angle deposition technique provides ITO films with more application possibilities by allowing their optical and electrical properties to be tailored.

Oblique-Angle Sputtering Effects on Characteristics of Nanocolumnar Structure Anisotropic Indium Tin Oxide Films

2009 ◽  
Vol 156 (6) ◽  
pp. H471 ◽  
Author(s):  
Lung-Chien Chen ◽  
Cheng-Chiang Chen ◽  
Yen-Tang Sung ◽  
Ya-Ying Hsu
Keyword(s):  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Oxide Films ◽  
Oblique Angle ◽  
Tin Oxide Films

Fan-shaped mid-infrared chiral metamaterials based on indium tin oxide and their circular dichroism

2020 ◽  
Vol 13 (4) ◽  
pp. 722-727
Author(s):  
ZHU Ye-xin ◽  
◽  
◽  
LI Ya-nan ◽  
SHI Wei-jie ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Mid Infrared ◽  
Chiral Metamaterials ◽  
Circular Dichroïsm

Indium tin oxide/GaAs photodiodes for millimetric-wave applications

1986 ◽  
Vol 22 (23) ◽  
pp. 1266 ◽  
Author(s):  
D.G. Parker ◽  
P.G. Say
Keyword(s):  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Millimetric Wave

Indium–tin oxide film electrode as catalytic amperometric sensor for hydrogen peroxide

The Analyst ◽  
1995 ◽  
Vol 120 (10) ◽  
pp. 2579-2583 ◽  
Author(s):  
Xiaohua Cai ◽  
Božidar Ogorevc ◽  
Gabrijela Tavčar ◽  
Joseph Wang
Keyword(s):  
Hydrogen Peroxide ◽  
Oxide Film ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Amperometric Sensor ◽  
Film Electrode
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