Development of naphtho[1,2-b:5,6-b′]dithiophene based novel small molecules for efficient bulk-heterojunction organic solar cells†,10.1039/C1CC15465F

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Development of naphtho[1,2-b:5,6-b′]dithiophene based novel small molecules for efficient bulk-heterojunction organic solar cells†

Pranabesh Dutta,Wooseung Yang,Seung Hun Eom,Woo-Hyung Lee,In Nam Kang,Soo-Hyoung Lee

Chemical Communications Pub Date : 11/07/2011 00:00:00 , DOI:10.1039/C1CC15465F

Abstract

Two new small molecules with a rigid planar naphtho[1,2-b:5,6-b′]dithiophene (NDT) unit were designed and synthesized. Solution processed bulk-hetereojunction organic solar cells based on blends of the small molecules and [6,6]-phenyl-C₇₁-butyric acid methyl ester (PC₇₁BM) exhibited promising photovoltaic device performance with a maximum power conversion efficiency up to 2.20% under the illumination of AM 1.5G, 100 mW cm⁻².