A new narrow bandgap polyfluorene copolymer containing 2,6-bis-(3-hexyl- thiophen-2-yl)-anthraquinone unit for solar cell applications

Jung Feng Lee, Steve Lien Chung Hsu, Po I. Lee, Hung Yi Chuang, Jen Sue Chen, Wei Yang Chou

研究成果: Article

7 引文 斯高帕斯(Scopus)

摘要

We have synthesized a new narrow bandgap alternating polyfluorene copolymer (PFTTDIONE) based on 2,7-dibromo-9,9-dioctylfluorene, 2,5-bis-(tributyl- stannyl)thiophene, and 2,6-bis-(5-bromo-3-hexyl-thiophen-2-yl)-anthraquinone (M1), via a Stille polymerization reaction. The optical properties, electrochemical properties, photovoltaic properties, hole mobility, and AFM morphology of the copolymers were investigated and discussed. The optical bandgap of PFTTDIONE is equal to the electrochemical bandgap (1.90 eV). PFTTDIONE exhibits an extended absorption band in the visible part of the spectrum with an absorption edge close to 650 nm. In order to investigate its photovoltaic properties, polymer solar cells (PSCs) devices based on PFTTDIONE were fabricated with a structure of ITO/PEDOT:PSS/ copolymer:PCBM/LiF/Al under the illumination of AM 1.5 G, 100 mW/cm2. The bulk heterojuction (BHJ) polymer solar cells were fabricated with the conjugated polymer as the electron donor and 6,6-phenyl C61-butyric acid methyl ester (PCBM) as the electron acceptor. The power conversion efficiency (PCE) of the solar cells based on PFTTDIONE/PCBM (1:2) annealing at 110 °C for 20 min was 1.58% with an open-circuit voltage (Voc) of 0.74 V, Fill Factor of 35.7%, and a short-circuit current (Jsc) of 5.99 mA/cm2.

原文English
頁(從 - 到)218-225
頁數8
期刊Solar Energy Materials and Solar Cells
96
發行號1
DOIs
出版狀態Published - 2012 一月 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films

指紋 深入研究「A new narrow bandgap polyfluorene copolymer containing 2,6-bis-(3-hexyl- thiophen-2-yl)-anthraquinone unit for solar cell applications」主題。共同形成了獨特的指紋。

  • 引用此