Results 261 to 270 of about 16,024 (306)

Fluorescence quenching of organic molecule by insulator

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2013
A new kind of fluorophore 2-(4-fluorophenyl)-1-phenyl-1H-benzo[d]imidazole (FPPBI) has been synthesized and characterized by (1)H NMR, (13)C NMR, mass spectral studies and single crystal XRD. The energy transfer from FPPBI to Al2O3 nanocrystals has been studied by absorption, fluorescence and lifetime spectroscopic methods.
C, Karunakaran, J, Jayabharathi, K, Jayamoorthy   +2 more
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Photo-Enhanced Currents in Organic Insulators

Physica Status Solidi (a), 1979
A general description is given of space-charge-limited photo-enhanced currents (PEC) in organic insulators. The model developed is based on the distribution function for the occupation of traps under simultaneous thermal and optical charge detrapping. The theoretical results satisfactorily reproduce all features of the experimental voltage and spectral
J. Godlewski, J. Kalinowski
openaire   +1 more source

Nontracking organic insulations

Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics, 1956
A novel principle has been discovered which retards or completely eliminates the formation of conducting decomposition products in organic materials exposed to electric discharges. The application of this principle to several organic insulation materials has greatly increased their ability to withstand electric arcing.
R. S. Norman, R. A. Pfuntner, A. A. Kessel   +2 more
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Mechanism for nontracking organic insulations

Electrical Engineering, 1958
MOST ORGANIC INSULATIONS are not suitable for high voltage applications in contaminated atmospheres. Under surface arcing conditions, the organic constituents of the insulation decompose to form carbonaceous paths and the apparatus will fail by progressive creepage tracking.
R. S. Norman, A. A. Kessel
openaire   +1 more source

Hydrophobicity of organic insulating materials

1988. Annual Report., Conference on Electrical Insulation and Dielectric Phenomena, 2003
The contact angle and the time for a water film to be formed on a surface are measured to investigate the hydrophobicity of UV (ultraviolet) irradiated materials. Ethylene propylene rubber and silicone rubber, both commonly used for graphic organic insulators, were adopted as specimens.
M. Ishii, M. Komatsubara
openaire   +1 more source

Prediction of a Two-Dimensional Organic Topological Insulator

Nano Letters, 2013
Topological insulators (TI) are a class of materials exhibiting unique quantum transport properties with potential applications in spintronics and quantum computing. To date, all of the experimentally confirmed TIs are inorganic materials. Recent theories predicted the possible existence of organic TIs (OTI) in two-dimensional (2D) organometallic ...
Z F, Wang, Ninghai, Su, Feng, Liu
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Fluctuation analysis of an organic semiconductor–insulator interface

Physical Chemistry Chemical Physics, 2013
The space-charge region of an organic semiconductor (OS)-insulator interface is probed by analyzing the spontaneous, thermally driven drain current fluctuations of a field-effect transistor in which the OS forms the gate electrode. This so called "excess drain current noise" is the outcome of local fluctuations of the Fermi level, resulting from ...
Ryan M, West, Mira, Josowicz, Jiří, Janata   +2 more
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Ferroelectriclike dielectric response and metal-insulator transition in organic Mott insulator-gate insulator interface

Journal of Applied Physics, 2010
A ferroelectriclike dielectric response was observed in a field-effect transistor using oriented bis(ethylenedithio)tetrathiafulvalene-tetracyanoquinodimethane crystals. Phase transitions at 285 and 320 K were clearly observed in the temperature dependence of field-effect electron mobility.
Masatoshi Sakai, Yuya Ito, Tomoki Takahara, Masato Ishiguro, Masakazu Nakamura, Kazuhiro Kudo   +5 more
openaire   +1 more source

Organic Semiconductor–Insulator Blends for Organic Field‐Effect Transistors

physica status solidi (RRL) – Rapid Research Letters, 2022
Extensive progress has been made on the application of organic semiconductors (OSCs) in organic field‐effect transistors (OFETs); however, low reproducibility and poor stability of OSCs have limited their industrial applications. One potential strategy to overcome these limitations is to blend OSCs with insulating commodity polymers.
Zhuoqiong Zhang, Run Shi, Abbas Amini, Shu Kong So, Chun Cheng   +4 more
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On the monitoring of the degradation of outdoor organic insulation

[1991] Proceedings of the 3rd International Conference on Properties and Applications of Dielectric Materials, 2002
Degradation phenomena which occur in correspondence with some interfaces which are present in organic composite insulation for outdoor high voltage applications are discussed. In particular, on the basis of the data obtained from either accelerated or environmental aging tests carried out on cycloaliphatic epoxies, results are presented regarding the ...
Giovanni Lupò, TUCCI, Vincenzo, FEMIA, Nicola, EGIZIANO, Luigi, S. Saiello   +4 more
openaire   +1 more source