• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2009.05a
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• pp.169-172
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• 2009

In this study, the current researches and the developing trend of the high burning rate solid propellants were briefly introduced and the effects of burning rate modifiers in the propellants on the combustion properties were reviewed. At the same time, bis(ethylenediamine)copper perchlorate(BECP) has been prepared as a burning rate modifier, and the burning characteristics were investigated in Butacene/AP propellants. The results showed that the metal complex, BECP, can increase remarkably the burning rate of high burning rate Butacene/AP propellants.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2001.07a
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• pp.228-230
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• 2001

We synthesized Bis(3-N-ethylcarbazolyl) terephthalidene(BECP) and Bis(3-7-ethyl-carbazolyl) cyanoterephthalidene(BECCP) and characterized EL properties of these materials. Our device shows a strong blue emission at 472 nm with a luminance efficiency of 0.9 lm/W at a voltage, a current density, and a brightness of 8 V, 5.7 mA/cm$^2$, and 130 cd/m$^2$, respectively.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2003.11a
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• pp.514-516
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• 2003

We have fabricated an air stable blue emitting organic electroluminescent devices (OLEDs) with a carbazole based emitting molecule, Bis(3-N-ethylcarbazolyl)terephthalidene (BECP). Our device emits strong blue at 472 nm with the luminance efficiency of near 1 lm/W at a voltage and current density of 8 V and 5.7 mA/cm2, respectively, reaching the brightness up to 5000 cd/m2 at 270 mA/cm2. Finally, in order to tune the emission color from blue to green, we have used Bis(3-N-ethylcarbazolyl)cynoterephthalidene (BECCP), a derivative of BECP by adding cyno group in side chain, and compared the electroluminscence (EL) of OLEDS prepared by BECCP to that of BECP based OLEDs.

• 한국정보디스플레이학회:학술대회논문집
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• 2001.08a
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• pp.157-158
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• 2001

We synthesized Bis(3-N-ethylcarbazolyl) terephthalidene(BECP) and Bis(3-N-ethylcarbazolyl) cyanoterephthalidene (BECCP) and characterized EL properties of these materials. Our device shows a strong blue emission at 472 nm with a luminance efficiency of 0.9 lm/Wat a voltage, a current density. and a brightness of 8 V, 5.7 $mA/cm^2$, and 130 $cd/m^2$, respectively.