Investigation of current-voltage characteristics and current conduction mechanisms in composites of polyvinyl alcohol and bismuth oxide

2013 ◽  
Vol 54 (8) ◽  
pp. 1811-1816 ◽  
Author(s):  
Mert Yıldırım ◽  
Muharrem Gökçen ◽  
Tuncay Tunç ◽  
İbrahim Uslu ◽  
Şemsettin Altındal
Keyword(s):  
Polyvinyl Alcohol ◽  
Bismuth Oxide ◽  
Conduction Mechanisms ◽  
Current Voltage ◽  
Current Conduction ◽  
Current Voltage Characteristics

Current-voltage characteristics of symmetric structures based on glasses with high bismuth oxide content

1977 ◽  
Vol 20 (5) ◽  
pp. 621-623
Author(s):  
A. B. Glot ◽  
V. B. Odnorozhenko ◽  
B. K. Chernyi ◽  
A. Ya. Yakunin
Keyword(s):  
Bismuth Oxide ◽  
Oxide Content ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Symmetric Structures

Conduction Mechanisms at SiO2/4H-SiC Interfaces in MOS-Based Devices Subjected to Post Deposition Annealing in N2O

2016 ◽  
Vol 858 ◽  
pp. 705-708
Author(s):  
Patrick Fiorenza ◽  
Filippo Giannazzo ◽  
Alessia Frazzetto ◽  
Alfio Guarnera ◽  
Mario Saggio ◽  
...  
Keyword(s):  
Gate Oxide ◽  
Temperature Dependent ◽  
Post Deposition Annealing ◽  
Mos Capacitors ◽  
Gate Current ◽  
Conduction Mechanisms ◽  
Current Voltage ◽  
Hole Conduction ◽  
Current Conduction ◽  
Post Deposition

This paper reports on the conduction mechanisms through the gate oxide and trapping effects at SiO2/4H-SiC interfaces in MOS-based devices subjected to post deposition annealing in N2O. The phenomena were studied by temperature dependent current–voltage measurements. The analysis of both n and p-MOS capacitors and of n-channel MOSFETs operating in the “gate-controlled-diode” configuration revealed an anomalous hole conduction behaviour through the SiO2/4H-SiC interface, with the onset of current conduction moving towards more negative values during subsequent voltage sweeps. The observed gate current instabilities upon subsequent voltage sweeps were deeply investigated by temperature dependent cyclic gate current measurements. The results were explained by the charge-discharge mechanism of hole traps in the oxide.

scholarly journals Spectroscopic and photoelectric studies of phthalocyanines in polyvinyl alcohol for application in solar energy conversion

2000 ◽  
Vol 2 (2) ◽  
pp. 87-96 ◽  
Author(s):  
Danuta Wróbel ◽  
Andrzej Boguta ◽  
Rodica M. Ion
Keyword(s):  
Solar Energy ◽  
Polyvinyl Alcohol ◽  
Excited States ◽  
Spectroscopic Investigation ◽  
Spectral Properties ◽  
Alcohol Solution ◽  
Photoelectrochemical Cell ◽  
Synthetic Dyes ◽  
Current Voltage ◽  
Current Voltage Characteristics

Phthalocyanines are synthetic dyes which are shown to be good photoconverters which can be applied in a photoelectrochemical cell constructed of semiconducting and metallic electrodes. By means of spectroscopic investigation (absorption,fluorescence and photoacoustics) we have followed spectral properties of phthalocyanines complexed with metals dissolved in polyvinyl alcohol solution in order to determine the pathways of deactivation of their excited states. Spectroscopic investigations were accompanied with photovoltaic/photocurrent and current-voltage characteristics of the photoelectrochemical cell with dyes. It has been shown that there is a correlation between dye fluorescence feature and dye ability to electric photoconversion. The comparison of new data for metallic phthalocyanines with those obtained for porphyrins is discussed.

scholarly journals Электропроводность и барьерные свойства тонких пленок ниобата лития-=SUP=-*-=/SUP=-

2018 ◽  
Vol 60 (4) ◽  
pp. 739
Author(s):  
С.И. Гудков ◽  
К.Д. Бакланова ◽  
М.В. Каменщиков ◽  
А.В. Солнышкин ◽  
А.Н. Белов
Keyword(s):  
Thin Film ◽  
Electrical Conductivity ◽  
Laser Ablation ◽  
Magnetron Sputtering ◽  
Space Charge ◽  
Laser Ablation Method ◽  
Conduction Mechanisms ◽  
Current Voltage ◽  
Capacitance Voltage ◽  
Current Voltage Characteristics

AbstractThe thin-film structures made of LiNbO_3 and obtained via laser ablation and magnetron sputtering are studied with volt-farad and volt-ampere characteristics. A potential barrier on the Si–LiNbO_3 interface was found for both types of the films with the capacitance-voltage characteristics. The current-voltage characteristics showed that there are several conduction mechanisms in the structures studied. The Poole–Frenkel effect and the currents limited by a space charge mainly contribute to the electrical conductivity in the LiNbO_3 film produced with the laser ablation method. The currents limited by a space charge contribute to the main mechanism in the film heterostructure obtained with the magnetron sputtering method.

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