Optical Properties of Oriented Crystalline Oligothiophene Thin Films

1995 ◽  
Vol 413 ◽  
Author(s):  
K. Suzuki ◽  
N. Shimizu ◽  
Y. Shiraishi ◽  
M. Kuroda ◽  
Y. Kanemitsu
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Fused Silica ◽  
Organic Films ◽  
Luminescence Spectra ◽  
Silica Glasses ◽  
Molecular Beam Deposition ◽  
Crystalline Films ◽  
Average Size ◽  
Beam Deposition

ABSTRACTWe have studied optical properties of oriented crystalline oligothiophene (T4-T6) thin films to analyze the correlation between optical properties and microstructures in organic films. By using conventional vacuum deposition and organic molecular beam deposition techniques, we fabricated oriented crystalline oligothiophene thin films on fused silica glasses. Luminescence spectrum and dynamic. depend on the thickness of the crystalline films. X-ray and scanning electron microscope analyses show that with an increase of film thickness, the average size of microcrystals increases and then saturates to a constant (∼300 nm). The anisotropy of absorption and luminescence spectra show the orientation of molecules in thick films.

Structural and Optical Properties of In-Plane Ordered Metallo-Phthalocyanine Thin Films Formed on Sapphire by Organic Molecular Beam Deposition

1995 ◽  
Vol 34 (Part 1, No. 7B) ◽  
pp. 3884-3888 ◽  
Author(s):  
Takayoshi Hayashi ◽  
Tohru Maruno ◽  
Akira Yamashita ◽  
Stefan Fölsch ◽  
Hirohisa Kanbara ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Molecular Beam ◽  
Structural And Optical Properties ◽  
Molecular Beam Deposition ◽  
Beam Deposition

Optical properties of highly oriented quaterthiophene thin films grown by organic molecular-beam deposition

2000 ◽  
Vol 62 (16) ◽  
pp. 11170-11176 ◽  
Author(s):  
A. Sassella ◽  
A. Borghesi ◽  
F. Meinardi ◽  
R. Tubino ◽  
M. Gurioli ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Molecular Beam ◽  
Molecular Beam Deposition ◽  
Beam Deposition

Optical Properties of CdS1 – xTex Thin Films Obtained by Chemical Molecular Beam Deposition Method

2021 ◽  
Vol 57 (3) ◽  
pp. 181-187
Author(s):  
T. M. Razykov ◽  
A. Patryn ◽  
M. Maliński ◽  
L. Bychto ◽  
B. Ergashev ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Molecular Beam ◽  
Deposition Method ◽  
Molecular Beam Deposition ◽  
Beam Deposition

Optical properties of thin films of oligothiophenes deposited by organic molecular beam deposition

2001 ◽  
Vol 116 (1-3) ◽  
pp. 213-216 ◽  
Author(s):  
A Sassella ◽  
A Borghesi ◽  
F Meinardi ◽  
D Riva ◽  
S Tavazzi ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Molecular Beam ◽  
Molecular Beam Deposition ◽  
Beam Deposition

scholarly journals CHARACTERISTICS OF LITHIUM LANTHANUM TITANATE THIN FILMS MADE BY ELECTRON BEAM EVAPORATION FROM NANOSTRUCTURED La0.67-xLi 3xTiO3 TARGET

2017 ◽  
Vol 25 (2) ◽  
pp. 243-250
Author(s):  
Nguyen Nang Dinh ◽  
Le Dinh Trong ◽  
Pham Duy Long
Keyword(s):  
Thin Films ◽  
Electron Beam ◽  
Ionic Conductivity ◽  
Room Temperature ◽  
Xrd Analysis ◽  
Electron Beam Evaporation ◽  
Electrochromic Devices ◽  
Lanthanum Titanate ◽  
Average Size ◽  
Beam Deposition

Bulk nanostructured perovskites of La0.67-xLi3xTiO3 (LLTO) were prepared by using thermally ball-grinding from compounds of La2O3, Li2CO3 and TiO2. From XRD analysis, it was found that LTTO materials were crystallized with nano-size grains of an average size of 30 nm. The bulk ionic conductivity was found strongly dependent on the Li+ composition, the samples with x = 0.11 (corresponding to a La0.56Li0.33TiO3 compound) have the best ionic conductivity, which is ca. 3.2 x 10-3 S/cm at room temperature. The LLTO amorphous films were made by electron beam deposition. At room temperature the smooth films have ionic conductivity of 3.5 x 10-5  S/cm and transmittance of 80%. The optical bandgap of the films was found to be of 2.3 eV. The results have shown that the perovskite La0.56Li0.33TiO3  thin films can be used for a transparent solid electrolyte in ionic battery and in all-solid-state electrochromic devices, in particular.    

Optoelectronic and Structural Properties of Vacuum-Deposited Crystalline Organic Thin Films

1993 ◽  
Vol 328 ◽  
Author(s):  
S. R. Forrest ◽  
P. E. Burrows ◽  
E. I. Haskal ◽  
Y. Zhang
Keyword(s):  
Thin Films ◽  
Quantum Wells ◽  
Field Effect Transistors ◽  
Organic Thin Films ◽  
Potential Method ◽  
Organic Films ◽  
Light Emitting ◽  
Organic Monolayer ◽  
Molecular Beam Deposition ◽  
Monolayer Growth

ABSTRACTRecently, it has been discovered that crystalline organic thin films can be deposited in nearly single crystalline form on a variety of substrates such as glass, polymers, etc. Since then, this discovery has led to the growth of crystalline organic quantum wells, waveguides, coupler/switches, and organic/ inorganic heterojunction devices such as field effect transistors and avalanche photodiodes. Organic light emitting diodes (LEDs) which luminesce in the red, green and blue have also been demonstrated. In this paper, we will report on several recent advances in the growth of organic thin films deposited by organic molecular beam deposition. We report on modeling of organic monolayer growth based on the atom-atom potential Method. The Model provides insight into the factors which control “quasi-epitaxial growth” i.e. the ordered growth of one layer of an organic film which is incommensurate with the substrate lattice. We also observe large optical nonlinearities which are a feature of both single and Multi-layer crystalline organic films. The growth of organic, nonlinear optically active crystalline organic compounds are also discussed.

Growth of ordered thin films of tris(phenylquinoxaline) by organic molecular beam deposition

2000 ◽  
Vol 111-112 ◽  
pp. 99-103
Author(s):  
S Blumstengel ◽  
A Sassella ◽  
A Filippini ◽  
M Gurioli ◽  
W Porzio ◽  
...  
Keyword(s):  
Thin Films ◽  
Molecular Beam ◽  
Molecular Beam Deposition ◽  
Beam Deposition

The growth of thin films with high thickness uniformity using ultrahigh vacuum molecular beam deposition

1990 ◽  
Vol 8 (6) ◽  
pp. 3934-3937 ◽  
Author(s):  
C. H. Hale ◽  
I. T. Muirhead ◽  
S. P. Fisher ◽  
J. S. Orr ◽  
J. G. H. Mathew ◽  
...  
Keyword(s):  
Thin Films ◽  
Molecular Beam ◽  
Ultrahigh Vacuum ◽  
Thickness Uniformity ◽  
Molecular Beam Deposition ◽  
Beam Deposition
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