Amorphous Silicon-Carbon Thin Film P-I-N Structures for Liquid-Crystal Spatial Light Modulators

1996 ◽  
Vol 420 ◽  
Author(s):  
N. A. Feoktistov ◽  
N. L. Ivanova ◽  
L. E. Morozova ◽  
Yu. A. Nikulin ◽  
A. P. Onokhov ◽  
...  
Keyword(s):  
Light Intensity ◽  
Amorphous Silicon ◽  
Diffraction Efficiency ◽  
Carbon Films ◽  
Spatial Light Modulators ◽  
Frequency Range ◽  
Light Modulators ◽  
Operation Speed ◽  
Silicon Carbon ◽  
Hydrogenated Amorphous

AbstractPhotoaddressed spatial light modulators (PSLM) based on nematic liquid crystals using hydrogenated amorphous silicon-carbon films (a-Si1-xCx,:H) and p-i-n structures as photosensitive layers are designed and studied. It is shown that an application of a-Si1-xCx:H p-i-n diodes greatly improved the operation speed of a PSLM, increased the film transparency and decreased the absorption of the red readout light. As a result, the readout light intensity could become ≈ 20 times larger. The maximum diffraction efficiency of the PSLM was achieved for a write-in light intensity of 40μLW/cm2, with a resolution (FWHM) of the diffraction efficiency of 54 mm-1. The optical response of the PSLM was observed in the frequency range from 1 Hz to 100 Hz.

Thermopower and 1/f Noise Measurements in Amorphous Silicon-Carbon Alloys

1995 ◽  
Vol 377 ◽  
Author(s):  
H. M. Dyalsingh ◽  
G. M. Khera ◽  
J. Kakalios
Keyword(s):  
Amorphous Silicon ◽  
Power Spectra ◽  
Carbon Films ◽  
Noise Power ◽  
Mobility Edge ◽  
Silicon Carbon ◽  
Noise Measurements ◽  
Noise Statistics ◽  
Hydrogenated Amorphous ◽  
Q Function

ABSTRACTThermopower, conductivity and 1/f noise measurements have been performed on a series of n-type doped hydrogenated amorphous silicon carbon films that are prepared with varying gas phase concentrations of CH4. The increased disorder at the mobility edge associated with alloying is characterized by the Q-function, which is obtained by combining thermopower and conductivity measurements, and is also reflected in the noise power spectra and noise statistics.

EPR study of carbon and silicon related defects in carbon-rich hydrogenated amorphous silicon-carbon films

2010 ◽  
Vol 81 (15) ◽  
Author(s):  
E. N. Kalabukhova ◽  
S. N. Lukin ◽  
D. V. Savchenko ◽  
B. D. Shanina ◽  
A. V. Vasin ◽  
...  
Keyword(s):  
Amorphous Silicon ◽  
Hydrogenated Amorphous Silicon ◽  
Carbon Films ◽  
Silicon Carbon ◽  
Hydrogenated Amorphous

Characterization of hydrogenated amorphous silicon-carbon films deposited by hybrid-plasma CVD

1994 ◽  
Vol 34 (1-4) ◽  
pp. 409-414 ◽  
Author(s):  
Tadashi Fujii ◽  
Kenji Sameshima ◽  
Hiroshi Okada ◽  
Kenji Yoshida ◽  
Tadao Hashimoto ◽  
...  
Keyword(s):  
Amorphous Silicon ◽  
Hydrogenated Amorphous Silicon ◽  
Carbon Films ◽  
Plasma Cvd ◽  
Silicon Carbon ◽  
Hybrid Plasma ◽  
Hydrogenated Amorphous

Crystallization of hydrogenated amorphous silicon–carbon films by means of laser treatments

2005 ◽  
Vol 247 (1-4) ◽  
pp. 471-476 ◽  
Author(s):  
G. Ambrosone ◽  
U. Coscia ◽  
S. Lettieri ◽  
P. Maddalena ◽  
C. Minarini ◽  
...  
Keyword(s):  
Amorphous Silicon ◽  
Hydrogenated Amorphous Silicon ◽  
Carbon Films ◽  
Silicon Carbon ◽  
Laser Treatments ◽  
Hydrogenated Amorphous

Deformed Helix Ferroelectric Liquid Crystals with Large Tilt Angles in Optically Addressed Spatial Light Modulators for Dynamical Holography Applications

1997 ◽  
Vol 488 ◽  
Author(s):  
L. A. Beresnev ◽  
W. Haase ◽  
A. P. Onokhov ◽  
W. Dultz ◽  
M. V. Isaev ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Liquid Crystals ◽  
Amorphous Silicon ◽  
Diffraction Efficiency ◽  
Optical Axis ◽  
Polymeric Films ◽  
Spatial Light Modulators ◽  
Ferroelectric Liquid Crystals ◽  
Holographic Image ◽  
Light Modulators

AbstractOptically addressed spatial light modulators (OASLMs) based on deformed helix ferroelectric liquid crystals (DHFLC) with high tilt angles on order of 40° and helical pitches less than 0.2μm were developed. The diffraction efficiency reached the order of 20%. The light induced deviation of the optical axis of the DHFLC layer was measured in sandwich structures consisting of photoconductors and liquid crystals. The photoelectric parameters of photoconductive amorphous silicon carbide a-SiC:H and a photoconductive polymeric films were measured with and without light blocking and reflecting layers. The application of the developed OASLMs in a holographic image corrector was demonstrated.

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