• 제목/요약/키워드: BECP

검색결과 4건 처리시간 0.017초

고체추진제의 연소속도 증진기술 (Increasing the burning rate of solid propellants)

  • 김준형;임유진;김인철;박영철;서태석;정정용;유지창
    • 한국추진공학회:학술대회논문집
    • /
    • 한국추진공학회 2009년도 춘계학술대회 논문집
    • /
    • pp.169-172
    • /
    • 2009
  • 본 연구에서는 고연소속도 고체추진제 개발을 위한 현재의 기술들과 연구동향을 분석하였고, 연소속도 조절제에 대한 추진제 적용 및 연소 특성에 대해 검토하였다. 또한 연소속도 조절제로bis(ethylenediamine)copper perchlorate(BECP)를 제조하였고 이의 연소특성이 Butacene/AP 추진제에서 평가되었다. 결과적으로, Butacene과 AP로 구성된 고연소속도 고체 추진제에서 금속배위화합물인 BECP는 고체추진제의 연소속도를 크게 증진시켰다.

  • PDF

Blue Organic Light Emitting triodes with Carbazole Based Small Molecules

  • Park, Jong-Wook;Kim, Dong-Hyun
    • 한국전기전자재료학회:학술대회논문집
    • /
    • 한국전기전자재료학회 2001년도 하계학술대회 논문집
    • /
    • pp.228-230
    • /
    • 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.

  • PDF

Blue organic light emitting diodes with carbazole based small molecules and color tunning by controlled side group

  • 김용범;안영주;박지호;강민웅;우형석;박종욱
    • 한국전기전자재료학회:학술대회논문집
    • /
    • 한국전기전자재료학회 2003년도 추계학술대회 논문집 Vol.16
    • /
    • pp.514-516
    • /
    • 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.

  • PDF

Blue Organic Light Emitting Diodes with Carbazole Based Small Molecules

  • Park, Jong-Wook;Woo, Hyung-Suk;Caroll, David;Lee, Ji-Hoon
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 한국정보디스플레이학회 2001년도 International Meeting on Information Display
    • /
    • pp.157-158
    • /
    • 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.

  • PDF