Titania/Ormosils Organic-Inorganic Hybrid Thin Films Doped with Azobenzene Small Molecules for Optical Switch Applications

2007 ◽  
Vol 31 ◽  
pp. 11-13
Author(s):  
Wen Xiu Que ◽  
M. Sun ◽  
C.Y. Jia ◽  
L. Cheng ◽  
Zhuo Sun ◽  
...  
Keyword(s):  
Thin Films ◽  
Small Molecules ◽  
Spin Coating ◽  
Optical Switch ◽  
Morphological Properties ◽  
Propagation Mode ◽  
Coating Process ◽  
Inorganic Hybrid ◽  
Spin Coating Process ◽  
Hybrid Thin Films

Titania/organically modified silanes (ormosils) organic-inorganic hybrid thin films doped with azobenzene small molecules are prepared by a low temperature sol-gel spin-coating process for optical switch applications. Acid-catalyzed solutions of γ-glycidoxypropyltrimethoxysilane and methyltrimethoxysilane mixed with tetrapropyl orthotitanate are used as matrix precursors. Atomic force microscopy is used to study the morphological properties of the hybrid thin films. Results indicate that crack-free thin films with a thickness of about 1.3μm can be obtained by a single spin-coating process after a low heat treatment temperature. The propagation mode properties of the hybrid thin films are also studied by employing a prism coupling technique. The photo-responsive properties of the hybrid films baked at different temperatures are induced by an irradiation with UV light and subsequent visible light.

A Novel Two-Step Spin-Coating Process for Preparing PEDOT/PSS thin Films and Review of Recent Advances in Spin Coating

2015 ◽  
Vol 8 (2) ◽  
pp. 176-182 ◽  
Author(s):  
Wen-Zhen Cheng ◽  
Jin-Xia Liu ◽  
Yin-Ang Mei ◽  
Ping Zhang ◽  
Takuya Omi ◽  
...  
Keyword(s):  
Thin Films ◽  
Spin Coating ◽  
Coating Process ◽  
Spin Coating Process ◽  
Recent Advances

Direct Observation on Spin-Coating Process of PS-b-P2VP Thin Films

2016 ◽  
Vol 49 (9) ◽  
pp. 3471-3477 ◽  
Author(s):  
Hiroki Ogawa ◽  
Mikihito Takenaka ◽  
Tsukasa Miyazaki ◽  
Akihiko Fujiwara ◽  
Byeongdu Lee ◽  
...  
Keyword(s):  
Thin Films ◽  
Direct Observation ◽  
Spin Coating ◽  
Coating Process ◽  
Spin Coating Process

scholarly journals Polymorphs of Neodymium Niobate and Tantalate Thin Films Prepared by Sol-Gel Method

2019 ◽  
Vol 19 (1) ◽  
pp. 34-43
Author(s):  
H. Bruncková ◽  
Ľ. Medvecký ◽  
E. Múdra ◽  
A. Kovalčiková
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Surface Morphology ◽  
Spin Coating ◽  
Sol Gel ◽  
Coating Process ◽  
Spin Coating Process ◽  
Gel Method ◽  
Afm Analysis ◽  
Thin Film Devices

AbstractNeodymium niobate NdNbO4 (NNO) and tantalate NdTaO4 (NTO) thin films (~100 nm) were prepared by sol-gel/spin-coating process on Pb(Zr0.52Ti0.48)O3/Al2O3 substrates with annealing at 1000°C. The precursors of films were synthesized using Nb or Ta tartrate complexes. The XRD results of NNO and NTO films confirmed tetragonal T-NdNbO4 and T-NdTaO4 phases, respectively, with traces of monoclinic MNdNbO4 and M´-NdTaO4. The surface morphology and topography were investigated by SEM and AFM analysis. NTO was smoother with roughness 5.24 nm in comparison with NNO (6.95 nm). In the microstructure of NNO, small spherical (~ 20-50 nm) T-NdNbO4 and larger needle-like particles (~100 nm) of M-NdNbO4 phase were observed. The compact clusters composed of fine spherical T-NdTaO4 particles (~ 50 nm) and cuboidal M´-NdTaO4 particles (~ 100 nm) were found in NTO. The results of this work can contribute to formation of different polymorphs of films for the application in environmental electrolytic thin film devices.

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