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A Solution-Processable Molecule Using Thieno[3,2-b]thiophene as Building Block for Efficient Organic Solar Cells

A Solution-Processable Molecule Using Thieno[3,2-b]thiophene as Building Block for Efficient Organic Solar Cells

Huan Wei, Weichao Chen, Liangliang Han, Ting Wang, Xichang Bao, Xiaoyun Li, Jie Liu, Yuanhang Zhou, Renqiang Yang

Chem Asian J. 2015 Aug;10(8):1791-8.

PMID: 26097019

Abstract:

A solution-processed acceptor-π-donor-π-acceptor (A-π-D-π-A) type small molecule, namely DCATT, has been designed and synthesized for the application as donor material in organic solar cells. The fused aromatic unit thieno[3,2-b]thiophene (TT) flanked with thiophene is applied as π bridge, while 4,8-bisthienyl substituted benzodithiophene (BDT) and 2-ethylhexyl cyanoacetate are chosen as the central building block and end group, respectively. Introduction of fused ring to the small molecule enhances the conjugation length of the main chain, and gives a strong tendency to form π-π stacking with a large overlapping area which favors to high charge carrier transport. Small-molecule organic solar cells based on blends of DCATT and fullerene acceptor exhibit power conversion efficiencies as high as 5.20 % under the illumination of AM 1.5G, 100 mW cm(-2) .

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP121134381	3-(2-Ethylhexyl)thiophene		121134-38-1	Price

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