Research & Development in Material Science

Fullerene Functionalized Thiophene Derivative as an Acceptor Material for Organic Photovoltaics

Submission: August 17, 2017; Published: October 20, 2017

DOI: 10.31031/RDMS.2017.01.000520

ISSN: 2576-8840
Volume1 Issue4


A functionalized fulleropyrrolidine derivative of 4, 7-di (thiophen-2-yl)-2, 1, 3-benzothiadiazole (F-DTBT) was designed and synthesized by 1, 3-dipolar cycloaddition reaction. This thermally stable fullerene derivative exhibits an absorption peak at 425nm along with the characteristic peak of fullerene. This functionalized derivative shows deeper HOMO level, -6.16eV and higher LUMO level -3.6eV compared to C60PCBM. Bulk heterojunction solar cells were fabricated using F-DTBT as the acceptor and P3HT as the donor material. The preliminary result shows a power conversion of efficiency of 1.1% with a Voc of 0.61V, a Jsc of 6.1mAcm-2 and a fill factor of 29%. This functionalized DTBT with fullerene could be a stronger acceptor moiety compared to PCBM and could be a promising candidate for organic photovoltaics

Keywords: Fullerene functionalization; Bulk heterojunction; Organic photovoltaics

Get access to the full text of this article