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SYNTHESIS, STRUCTURE AND ELECTRICAL PROPERTIES OF POLY(PHENYLENE VINYLENE) FILM DOPED WITH FERRIC CHLORIDE

Chinese Journal of Polymer Science 1997年第2期15卷 129-138页

作者：李文广万梅香 Institute of Chemistry Academia Sinica Beijing 100080

Poly(phenylene vinylene) (PPV) him was synthesized via a soluble precursor polymer. Strong fluorescence at 500-600 nm was observed in both precursor and PPV him. Room-temperature conductivity of PPV him doped with FeCl3 depends on the elimination temperature, the concentration of FeCl3 and doping time. The maximum conductivity of doped PPV at room-temperature can reach about 40 S . cm(-1). The temperature dependence of conductivity was controlled by 1D-VRH (1 Dimension Variable Range Hopping) model with T-0 value of 3.9 x 10(3) K. Non-Ohmic conductivity resulting from schottky effect was observed and the value of converted voltage from Ohmic region into non-Ohmic region at the current-voltage characteristic was found to be dependent upon the work function of electrodes.

关键词： PPV fluorescence conductivity schottky effect light emitting diode (LED)

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Investigation on the Trap Signature in Organic Semiconductor Turmeric Film Through Current-Voltage Analysis

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Transactions of Tianjin University 2020年第4期26卷 265-272页

作者： Kushal Chakraborty Aloke Kumar Das Ratan Mandal Dulal Krishna Mandal Department of Physics Jadavpur UniversityKolkata 700032India School of Energy Studies Jadavpur UniversityKolkata 700032India Department of Mechanical Engineering Jadavpur UniversityKolkata 700032India

The analytical description of the trap signature in the charge conduction process of turmeric dye-based organic semiconductor has been presented in this *** analytical explanation of the built-in potential Ⅴx-Ⅴ graph that emphasizes the presence of trapping states has been *** analysis of current-voltage(Ⅰ-Ⅴ)characteristics has also been conducted to verify the trap signature of the carrier in the *** non-monotonous decrement of the G(Ⅴ)-Ⅴ plot verifies the trap *** values of trap energy(Et)and trap factor(θ)have been derived from the logarithmic Ⅰ-Ⅴ *** the analysis of the semilogarithmic Ⅰ-Ⅴ plot,the barrier height(ϕbi)of the device has also been *** overallⅠ-Ⅴcurve has been taken into account to examine the Richardson-schottky and Poole-Frenkel effects on the trap-assisted charge conduction *** the results of the experiment,the schottky effect has been observed to be effective,which leads to a bulk-limited charge conduction process.

关键词： Organic semiconductor Trap energy Trap factor Turmeric schottky effect

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