Study of MEH-PPV Characterization and Influence of Surface Morphology on Luminescent Properties in Polymer Light-Emitting Diodes

• Main Authors: Lin, Ching-Lung, 林清隆
• Other Authors: Chang, Shu-Mei
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/77421958961238440645

碩士 === 國立臺北科技大學 === 有機高分子研究所 === 92 === Polymer light-emitting diode (PLED), a popular topic for the application of conjugated polymers, has many advantages, such as self-radiation, low drive voltage, high luminance, wide visibility angle, high respondent rate, and easy process and the fabrication of flexible device. These benefits offer great potential for the application of the new generation flat panel display. In this dissertation, we have synthesized polymer MEH-PPV, poly [2-methoxy 5-(2-ethylhexoxy)-1,4-phenylenevinylene], with varied molecular weights via controlled polymerization conditions. Opto-electronic properties of these polymer films with or without two fluorescent dyes (DCJTB; PTOEP) have been investigated through the fabrication of the flexible polymer light-emitting devices (PLEDs) on PET substrates. The effects of molecular weight (Mw) and polydispersity (PDI) on emission properties and the morphology of polymer film are discussed by the measurements of Gel Permeation Chromatography (GPC), atomic force microscopy (AFM) and scanning electron microscopy (SEM).