화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Materials Research, Vol.18, No.7, 347-351, July, 2008
DOI10.3740/MRSK.2008.18.7.347  Export Citation
(TCTA/TCTA1/3TAZ2/3/TAZ) : Ir(ppy)3 발광층을 이용한 고효율 녹색 인광소자
High Efficiency Green Phosphorescent Organic Light Emitting Devices using the Emission Layer of (TCTA/TCTA1/3TAZ2/3/TAZ) : Ir(ppy)3
장지근†, 신상배, 신현관, 김원기, 유상욱, 장호정, 공명선1, 이준엽2
  • 단국대학교 전자공학과
  • 1단국대학교 화학과
  • 2단국대학교 고분자공학과
Ji-Geun Jang†, Sang-Baie Shin, Hyun-Kwan Shin, Won-Ki Kim, Sang-Ouk Ryu, Ho-Jung Chang, Myoung-Seon Gong1, and Jun-Yeob Lee2
  • Department of Electronics Eng., Dankook University, Chungnam 330-714, Korea
  • 1Department of Chemistry, Dankook University, Chungnam 330-714, Korea
  • 2Department of Polymer Sci. and Eng., Dankook University, Kyeonggi 448-701, Korea
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We have fabricated and evaluated newNew high high-efficiency green green-light light-emitting phosphorescent devices with an emission layer of [TCTA/TCTA1/3TAZ2/3/TAZ] : Ir(ppy)3 were fabricated and evaluated, and compared the electroluminescence characteristics of these devices were compared with the conventional phosphorescent devices with emission layers of (TCTA1/3TAZ2/3) : Ir(ppy)3 and (TCTA/TAZ) : Ir(ppy)3. The current density, luminance, and current efficiency of the a device with an emission layer of (80A-TCTA/90°A-TCTA1/3TAZ2/3/130A-TAZ) : 10%-Ir(ppy)3 were 95 mA/cm2, 25000 cd/m2, and 27 cd/A at an applied voltage of 10 V, respectively. The maximum current efficiency was 52 cd/A under the a luminance value of 400 cd/m2. The peak wavelength and FWHM (FWHM (full width at half maximum) in the electroluminescence spectral were 513 nm and 65 nm, respectively. The color coordinate was (0.30, 0.62) on the CIE (Commission Internationale de I'Eclairage) chart. Under the a luminance of 15000 cd/m2, the current efficiency of the a device with an emission layer of (80A-TCTA/90A-TCTA1/3TAZ2/3/130A-TAZ) : 10%-Ir(ppy)3 was 34 cd/A, which has beenshowed an improvement of improved 1.7 and 1.4 times compared to those of the devices with emission layers of (300A-TCTA1/3TAZ2/3) : 10%-Ir(ppy)3 and (100A-TCTA/200A-TAZ) : 10%-Ir(ppy)3, respectively.
Keywords:PhOLED;double hosts;current efficiency;TCTA;TAZ
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