A “roller-wheel” Pt-containing small molecule that outperforms its polymer analogs in organic solar cells†,10.1039/C6SC00513F

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A “roller-wheel” Pt-containing small molecule that outperforms its polymer analogs in organic solar cells†

Wenhan He,Maksim Y. Livshits,Diane A. Dickie,Jianzhong Yang,Rachel Quinnett,Jeffrey J. Rack,Qin Wu,Yang Qin

Chemical Science Pub Date : 05/23/2016 00:00:00 , DOI:10.1039/C6SC00513F

Abstract

A novel Pt-bisacetylide small molecule (Pt-SM) featuring “roller-wheel” geometry was synthesized and characterized. When compared with conventional Pt-containing polymers and small molecules having “dumbbell” shaped structures, Pt-SM displays enhanced crystallinity and intermolecular π–π interactions, as well as favorable panchromatic absorption behaviors. Organic solar cells (OSCs) employing Pt-SM achieve power conversion efficiencies (PCEs) up to 5.9%, the highest reported so far for Pt-containing polymers and small molecules.