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Issue 34, 2014

New organic dyes based on a dibenzofulvene bridge for highly efficient dye-sensitized solar cells

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Abstract

Three novel organic dyes, coded TK1, TK2 and TK3, incorporating two donor moieties, cyanoacrylic acid as an acceptor/anchoring group, the dibenzofulvene core and an oligothiophene spacer in a 2D–π–A system, were designed, synthesized, and successfully utilized in dye-sensitized solar cells. The dye TK3, containing two thiophene rings as spacers, shows an IPCE action spectrum with a high plateau from 390 nm to 600 nm, increased open-circuit photovoltage by 40 mV and short-circuit photocurrent by 7.03 mA cm−1, with respect to TK1. Using CDCA as the co-adsorbent material, the Jsc of TK3 was increased to 14.98 mA cm−1 and a strong enhancement in the overall conversion efficiency (7.45%) was realized by TK3 compared to TK1 (1.08%), in liquid electrolyte-based DSSCs.

Graphical abstract: New organic dyes based on a dibenzofulvene bridge for highly efficient dye-sensitized solar cells

Supplementary files

Article information


Submitted
30 4 2014
Accepted
15 6 2014
First published
16 6 2014

J. Mater. Chem. A, 2014,2, 14181-14188
Article type
Paper
Author version available

New organic dyes based on a dibenzofulvene bridge for highly efficient dye-sensitized solar cells

A. L. Capodilupo, L. De Marco, E. Fabiano, R. Giannuzzi, A. Scrascia, C. Carlucci, G. A. Corrente, M. P. Cipolla, G. Gigli and G. Ciccarella, J. Mater. Chem. A, 2014, 2, 14181 DOI: 10.1039/C4TA02161D

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