Affordable Access

Publisher Website

Push-pull organic semiconductors comprising of bis-dimethylfluorenyl amino benzo[b]thiophene donor and various acceptors for solution processed small molecule organic solar cells

Authors
Journal
Solar Energy Materials and Solar Cells
0927-0248
Publisher
Elsevier
Volume
102
Identifiers
DOI: 10.1016/j.solmat.2012.03.007
Keywords
  • Bulk Heterojunction
  • Intramolecular Charge Transfer
  • Electron-Withdrawing Acceptor
  • Organic Solar Cell
  • Organic Semiconductor

Abstract

Abstract New efficient push-pull organic semiconductors comprising of on the N,N-(6-bis(9,9-dimethyl-9H-fluoren-2-yl)amino-benzo[b]thiophen (bisDMFABT) donor and the various acceptors such as NO2, DCBP, and TCF, which were linked with thiophene or vinyl thiophene π-conjugation bridges, were synthesized, and their photovoltaic characteristics were investigated in solution processed small molecule organic solar cells (SMOSCs). The intramolecular charge transfers of these materials were effectively appeared in between bisDMFABT donor and acceptors, depending on the electron-withdrawing strength of acceptors. The organic semiconductor having DCBF acceptor exhibited the best power conversion efficiency of 3.22% with short circuit current of 9.64mA/cm2, fill fator of 0.42, and open circuit voltage of 0.80V in SMOSC devices with TiOx thin layer.

There are no comments yet on this publication. Be the first to share your thoughts.