• Title/Summary/Keyword: E-J power

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Performance Characteristics of p-i-n Type Organic Thin-film Photovoltaic Cell with CuPc: $F_4$-TCNQ Hole Transport Layer (CuPc: $F_4$-TCNQ 정공 수송층이 도입된 P-i-n형 유기 박막 태양전지의 성능 특성 연구)

  • Park, So-Hyun;Kang, Hak-Su;Senthilkumar, Natarajan;Park, Dae-Won;Choe, Young-Son
    • Polymer(Korea)
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    • v.33 no.3
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    • pp.191-197
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    • 2009

  • We have investigated the effect of strong p-type organic semiconductor $F_4$-TCNQ-doped CuPc hole transport layer on the performance of p-i-n type bulk heterojunction photovoltaic device with ITO/PEDOT:PSS/CuPc: $F_4$-TCNQ(5 wt%)/CuPc:C60(blending ratio l:l)/C60/BCP/LiF/Al, architecture fabricated via vacuum deposition process, and have evaluated the J-V characteristics, short-circuit current ($J_{sc}$), open-circuit voltage($V_{oc}$), fill factor(FF), and power conversion efficiency(${\eta}_e$) of the device. By doping $F_4$-TCNQ into CuPc hole transport layer, increased absorption intensity in absorption spectra, uniform dispersion of organic molecules in the layer, surface uniformity of the layer, and enhanced injection currents improved the current photovoltaic device with power conversion efficiency(${\eta}_e$) of 0.16%, which is still low value compared to silicone solar cell indicating that many efforts should be made to improve organic photovoltaic devices.

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A PSpice Modeling of PFC Circuit Using Soft-Switched Boost Converter

  • Mok, H.S.;Choe, G.H.;Jeong, S.E.;Choi, J.Y.
    • Proceedings of the KIPE Conference
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    • 1997.07a
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    • pp.393-399
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    • 1997

  • Single-phase and three-phase AC to DC power converters are becoming frequently used for high voltage/high power applications such as telecommunications. They often require input/output transformer isolation for safety, a unity input power factor for minimum reactive power, free input harmonic currents fed back to the AC Power distribution system and, finally, high efficiency and high power density for minimum weight and volume. The proposed boost converter for power factor correction (PFC) provides an unity input power factor, low harmonic distortion and high efficiency along with reduced volume and weight. Single-phase 220VAC input/380VDC 1KW output prototype is constructed and experimental results will be verified with those of PSpice simulation.

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Optimal Design of Power Loss for 3 Phase Voltage Source Inverter by using Thermal Management (써멀 메니지먼트(Thermal Management)에 의한 3상 전압형 인버터의 전력손실 최적화 설계)

  • Cho, S.E.;Park, S.J.
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.56 no.10
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    • pp.1757-1762
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    • 2007

  • Recently, the demand for the low cost power conversion equipment is rapidly increased. To develop this three phase voltage source inverter, optimum power conversion equipment to system is designed. The optimum operation method to minimize the power loss also satisfy the life time of the power electronics that is request in the present industry. In this paper, the efficient operating method to change of the acceleration, jerk, and switching frequency in the interval of acceleration is selected to optimize the power loss and life time of the power electronics by using the elevator model. So, we proposed the method that 50[A] rating power electronics is adopted in 9[kW] load.

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