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Novel Method for Combining Flexible Organic Light-Emitting Diodes with Organic Thin-Film Transistors
Taehyoung Zyung,Hye Yong Chu,Jeong-Ik Lee,Ji Young Oh,Jung Hun Lee,Sang Chul Lim,Seong Hyun Kim 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.48 No.I
We present a new method of driving an organic light-emitting diode (OLED) with an organic thin-film transistor (OTFT). The OTFT and the OLED were fabricated on separate plastic substrates and both devices were laminated with silver paste. After driving a 2 × 2 mm2 OLED with an OTFT device, we obtained 180 cd/m2 at a current density of 5 mA/cm2 from the green OLED by using an OTFT with mobility, on-off ratio, threshold voltage, and subthreshold slope of 0.21 cm2/V·s, 103, 32 V, and 20 V/decade, respectively.
Organic blue light emitting materials based on spirobiflorene
Jeong-IkLee,HyoyoungLee,JiyoungOh,HyeYongChu,SeongHyunKim,YongSukYang,GiHeonKim,Lee-MiDo,TaehyoungZyung 한국물리학회 2003 Current Applied Physics Vol.3 No.6
Spirobiuorene derivative, which is useful for obtaining small molecule or polymer blue light emitting materials, has beenprepared. To improve the solubility of nal materials, long alkoxy side chains were introduced to spirobiuorene moiety. Couplingreaction with biphenyl led to small molecule blue light emitting material. A polymer blue light emitting material was obtainedthrough Ni(0) mediated polymerization. Using vacuum deposition and spin coating methods, small molecule and polymer lightemitting devices were fabricated and their device characteristics were investigated. In this paper, the detailed preparation methods ofsmall molecule and polymer materials, and the device characteristics will be discussed.. 2003 Published by Elsevier B.V.