https://scholars.lib.ntu.edu.tw/handle/123456789/297458
標題: | Highly bright blue organic light-emitting devices using spirobifluorene-cored conjugated compounds | 作者: | CHUNG-CHIH WU Lin, Y.T. Chiang, H.H. Cho, T.Y. Chen, C.W. KEN-TSUNG WONG Liao, Y.L. Lee, G.H. SHIE-MING PENG |
公開日期: | 2002 | 卷: | 81 | 期: | 4 | 起(迄)頁: | 577-579 | 來源出版物: | Applied Physics Letters | 摘要: | An efficient and morphologically stable pyrimidine-containing spirobifluorene-cored oligoaryl, 2,7-bis[2-(4-tert-butylphenyl)pyrimidine-5-yl]- 9,9′-spirobifluorene (TBPSF), as an emitter or a host for blue organic light-emitting devices (OLEDs), is reported. The steric hindrance inherent with the molecular structure renders the material a record-high neat-film photoluminescence (PL) quantum yield of 80% as a pure blue emitter (PL peak at 430 nm) of low molecular weight, and a very high glass-transition temperature (Tg) of 195°C. Blue OLEDs employing this compound as the emitter or the emitting host exhibit unusual endurance for high currents over 5000 mA/cm2. When TBPSF is used as a host for perylene in a blue OLED, maximal brightness of ∼80000 cd/m2 had been achieved, representing the highest values reported for blue OLEDs under dc driving. © 2002 American Institute of Physics. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-79955982647&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/297458 https://www.scopus.com/inward/record.uri?eid=2-s2.0-79955982647&doi=10.1063%2f1.1493669&partnerID=40&md5=1ecd8001f14547701c9734a880410397 |
ISSN: | 00036951 | DOI: | 10.1063/1.1493669 | SDG/關鍵字: | Blue OLEDs; High currents; Low molecular weight; Organic light-emitting devices; Perylenes; Pure blue; Spirobifluorene; Steric hindrances; Aromatic compounds; Glass transition; Light emission; Quantum yield; Current density |
顯示於: | 化學系 |
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