Journal article

Hydrogen bonding in bulk heterojunction solar cells: A case study

Zeyun Xiao, Kuan Sun, Jegadesan Subbiah, Shaomin Ji, David J Jones, Wallace WH Wong

SCIENTIFIC REPORTS | NATURE PUBLISHING GROUP | Published : 2014

Abstract

Small molecules with dithieno[3,2-b;2',3'-d]thiophene as central building block and octyl cyanoacetate and octyl cyanoacetamide as different terminal building blocks have been designed and synthesized. The amide containing small molecule can form intermolecular hydrogen bonding between N-H...O = C of the amide group. The photovoltaic properties and active layer morphologies of the two molecules in bulk heterojunction solar cells are compared to study the influence of hydrogen bonding on the active layer morphology. New methanofullerene compound containing amide group has also been synthesized and compared with conventional fullerene electron acceptors.

Grants

Awarded by Australian Renewable Energy Agency (ARENA)


Awarded by Australian Research Council Future Fellowship


Funding Acknowledgements

This work was made possible by support of the Victorian Organic Solar Cell Consortium, with funding provided by the Victorian State Government Department of State Development, Business and Innovation (Energy Technology Innovation Strategy and Victorian Science Agenda) and the Australian Renewable Energy Agency (ARENA Project 2-A018). Dr W. H. H. Wong is supported by an Australian Research Council Future Fellowship (FT130100500). We thank Andrew B. Holmes for helpful discussion. We thank the Australian Synchrotron for the SAXS/WAXS beam time to perform the GIWAXS experiments.