Improved efficiency of organic solar cells with modified hole-extraction layers

✍ Scribed by Jiao Li; Juncheng Liu; Congjie Gao

• Book ID: 105339620
• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 206 KB
• Volume: 50
• Category: Article
• ISSN: 0887-6266
• DOI: 10.1002/polb.22356

✦ Synopsis

Abstract

The aim of this work has been to study the influence of modified hole‐extraction layers on the performance of organic solar cells (OSCs) based on blends of poly (3‐hexylthiophene) and [6,6]‐phenyl‐C~61~‐butyric acid methyl ester. The hole‐extraction layers consist of poly (3,4‐ethylene dioxythiophene):polystyrene sulfonic acid (PEDOT:PSS) doped with different concentrations of bromine. Compared with pristine OSC without adding bromine to the hole‐extraction layer, the bromine‐doped OSCs show a 49% increase in the power conversion efficiency (from 2.12 to 3.16%), which could be attributed to the increase of electrical and optical properties of PEDOT:PSS films after the addition of bromine. © 2011 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 50: 125–128, 2012