Effect of luminescent materials on Polymer Electroluminescent Devices

• Main Author: 黃柏凱
• Other Authors: 張淑美
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/19506424010242753221

碩士 === 國立臺北科技大學 === 有機高分子研究所 === 92 === In this study, double-layer polymer light emitting devices using dye dispersed in polymer matrix are fabricated. [2-(2''-hyoxyphenyl)benzothiazole](HBT) and its derivative [2- (2''-hyoxy pyridine)benzothiazole](HPBT) were used as the dopant in emissive polymer layer, while PVK, PMMA, and polyfluorene were used as the matrix material and PEDOT was selected as the hole-injection/transporting layer. The results of our experiments indicate a few interesting phenomena. Firstly, the electroluminescent intensity of PLED has been enhanced by the addition of HBT and its derivative. Secondly, HBT is found able to fabricate white-light EL devices while using PMMA as polymer matrix. In the final part of this dissertation, we compared with the device efficiency of the POSS-co-MEH-PPV and the MEH-PPV with POSS as dopant. We found that the devices made from MEH-PPV with POSS as dopant have higher current density. Both POSS-co-MEH-PPV and MEH-PPV with POSS as dopant exhibit higher EL intensity.