Controllable Optical, Electrical, and Morphologic Properties of 3,4-Ethylenedioxythiophene Based Electrocopolymerization Films

✍ Scribed by Cheng Gu; He Liu; Dehua Hu; Wensi Zhang; Ying Lv; Ping Lu; Dan Lu; Yuguang Ma

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 477 KB
• Volume: 32
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.201100194

✦ Synopsis

Abstract

This contribution presents a kind of novel and neutral network films based on EDOT formed by in situ electrocopolymerization (ECP). The ECP films which are neutral and colorless exhibit the conductivity of 0.2–0.5 S · cm^−1^, W~F~ of 4.79–5.20 eV, and RMS roughness of 3.51–5.26 nm. The electroluminescent devices where ECP films acted as hole‐transport layer (HTL) exhibit higher brightness, current density, efficiency (20–30% improvement), and stability than that of PEDOT:PSS HTL device. The ECP films also significantly benefit the stability of neighboring organic layer compared to PEDOT:PSS. This kind of new ECP films affords more opportunities to develop organic light‐emitting diodes (OLEDs) with high performances and stability. magnified image