Accession Number:

ADA535169

Title:

Development and Characterization of New Donor-Acceptor Conjugated Polymers and Fullerene Nanoparticles for High Performance Bulk Heterojunction Solar Cells

Descriptive Note:

Final rept. 1 Jan-31 Dec 2010

Corporate Author:

NATIONAL CHIAO TUNG UNIV HSINCHU (TAIWAN) DEPT OF MATERIALS SCIENCE

Personal Author(s):

Report Date:

2011-01-14

Pagination or Media Count:

6.0

Abstract:

Bithiophenethieno3,4-cpyrrole-4,6-dione TPD-based donor-acceptor polymer, PBTTPD, that exhibits high crystallinity and a low-lying highest occupied molecular orbital was prepared. A device incorporating a PBTTPD6,6-phenyl-C61-butyric acid methyl ester blend 11.5, ww displayed an open circuit voltage of 0.95 V and a power conversion efficiency of 4.7. A molecular design concept was introduced to develop a series of new conjugated polymers with donor-pi-bridge-acceptor side chains for high-efficiency polymer solar cells. Different from the commonly used linear D-A conjugated polymers, the acceptor of the polymers are located at the end of the side chains and connected with the electron-rich unit on the main chain through a pi-bridge. This method provides a facile way to tune the bandgaps and energy levels of the polymers by simply varying the acceptors on the side chains. A systematic study was performed in this project to elucidate the relationship among molecular structure-morphology-device properties to explore the full potential of applying these new materials for OPV applications.

Subject Categories:

  • Physical Chemistry
  • Polymer Chemistry
  • Electrical and Electronic Equipment
  • Energy Storage
  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE