Dithienogermole-based solution-processed molecular solar cells with efficiency over 9.
A molecular donor of intermediate dimensions based on dithienogermole (DTG) as the central electron rich unit, coded as DTG(FBT2Th2)2, was designed and synthesized for use in bulk heterojunction, solution-processed organic solar cells. Under optimized conditions, a maximum power conversion efficiency (PCE) of 9.1% can be achieved with [6,6]-phenyl C71-butyric acid methyl ester (PC71BM) as the acceptor semiconductor component.
Organic and Hybrid Solar Cells, Physics of Energy Harvesting Division, CSIR-National Physical Laboratory, New Delhi-110012, India. drvinaygupta@netscape.net.
Vinay
V
Gupta
Department Institute of Molecular Functional Materials and Department of Chemistry and Institute of Advanced Materials, Hong Kong Baptist University, Waterloo Road, Hong Kong, P. R. China.
Lai Fan
LF
Lai
Organic and Hybrid Solar Cells, Physics of Energy Harvesting Division, CSIR-National Physical Laboratory, New Delhi-110012, India. drvinaygupta@netscape.net.
Ram
R
Datt
Organic and Hybrid Solar Cells, Physics of Energy Harvesting Division, CSIR-National Physical Laboratory, New Delhi-110012, India. drvinaygupta@netscape.net.
Suresh
S
Chand
Department of Chemistry and Biochemistry, Center for Polymers and Organic Solids, University of California, Santa Barbara, California 93106, USA. bazan@chem.ucsb.edu.
Alan J
AJ
Heeger
Department of Chemistry and Biochemistry, Center for Polymers and Organic Solids, University of California, Santa Barbara, California 93106, USA. bazan@chem.ucsb.edu.
Guillermo C
GC
Bazan
Inorganic and Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad-500007, India. spsingh@iict.res.in.
Surya Prakash
SP
Singh