Oyamada, TakahitoTakahitoOyamadaChang, Chih-HaoChih-HaoChangChao, Teng-ChihTeng-ChihChaoFang, Fu-ChuanFu-ChuanFangCHUNG-CHIH WUKEN-TSUNG WONGSasabe, HiroyukiHiroyukiSasabeAdachi, ChihayaChihayaAdachi2009-10-142018-07-102009-10-142018-07-10200619327447http://ntur.lib.ntu.edu.tw//handle/246246/170513http://ntur.lib.ntu.edu.tw/bitstream/246246/170513/1/19.pdfhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-33847660922&doi=10.1021%2fjp0654056&partnerID=40&md5=c478a0cbaf313eb7aa8c5ae7543398a8We Demonstrated That Oligo(9,9-diarylfluorene) Derivatives Have High Potential for Optoelectron. Applic. Such as Organ. Lasers and Light-emitting Organ. Fld.-effect Transistors (LE-OFETs). the Oligo(9,9-diarylfluorene) Derivatives Have High Photoluminescence Quant. Efficiencies up to Φ PL ≈ 70-75% and very low amplified spontaneous emission thresholds (Eth) down to 0.5 μJ/cm2 in their vacuum-deposited neat films. In particular, the trimer derivatives (B3 and T3) show higher ΦPL and lower Eth than those of the dimers (B2 and T2). Efficient deep-blue LE-OFETs with the electroluminescence (EL) peaking at λpeak - 429 nm were demonstrated using the ter(9,9-diarylfluorene) as the active layer. Rather high luminance up to L ≈ 150 cd/m2 and EL quantum efficiency up to ηext ≈ 0.60% were achieved with the optimum source-drain channel length, indicating bipolar carrier injection in the terfluorene layer under the FET operation. © 2007 American Chemical Society.application/pdf1031918 bytesapplication/pdfen-USDerivatives; Organic light emitting diodes (OLED); Photoluminescence; Quantum efficiency; Spontaneous emission; Thin films; Electroluminescence (EL) peaking; Terfluorene layer; Trimer derivatives; Fluorine compoundsjournal article2-s2.0-33847660922WOS:000244993800020http://ntur.lib.ntu.edu.tw/bitstream/246246/170513/1/19.pdf