Emissive Semi-Interpenetrating Polymer Networks for OLED Displays
Recently, significant progress has been made toward application of organic (small molecule/polymer) lightemitting diodes (OLEDs) in full color flat panel displays and other devices. Most advanced OLEDs comprise multilayer structures, which generally are fabricated through either vacuum sublimation of small molecules or wet-chemical deposition of conjugated oligomers and/or polymers. However, when fabricating multilayer structures from solution it is difficult to make deposited layers resistant to the solvents used to deposit subsequent layers. This paper describes a general method for developing novel emissive semiinterpenetrating polymer networks (E-semi-IPNs) that contain an inert polymer network and emissive polymer(s), which can be incorporated through solution processing into OLED devices for use as an emitting layer (EL). These E-semi-IPN layers show a high solvent-resistance that protects them from damage during deposition of subsequent layers. In addition, the polymer network selected for these semi-IPNs can affect the carrier mobility to help balance positive and negative charges, thereby improving the OLED device performance. Moreover, since this method doesn’t require complicated chemical modification or introduction of reactive moieties to OLED materials, many state-of-the-arts emissive polymers can be utilized to achieve RGB and white OLEDs.
Lihua Zhao Zhanglin Zhou Jim Brug Sity Lam Gary Gibson Richard Elder
Information Surfaces Lab, Hewlett Packard Labs, Hewlett-Packard Company, 1501 Page Mill Road, Palo Alto, CA 94304, USA
国际会议
The 31st International Congress on Imaging Science(第31届国际影像科学大会 ICIS2010)
北京
英文
242-245
2010-05-12（万方平台首次上网日期，不代表论文的发表时间）