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Published on: January 10, 2017
Polyselenopheno[3,4-b]selenophene for Highly Efficient Bulk Heterojunction Solar Cells
Haythem A Saadeh1,2, Luyao Lu1, Feng He1
1Department of Chemistry and The James Franck Institute, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States.
Abstract:
Herein we describe the synthesis of a new series of copolymers (PSeBx) containing selenopheno[3,4-b]selenophene and benzodiselenophene, which exhibited a high power conversion efficiency (PCE) of 6.87% in a bulk heterojunction (BHJ) solar cell device (PSeB2/PC71BM). In comparison with its thiophene analogue, PTB9, the new polyselenopheno[3,4-b]selenophene-co-benzodiselenophene (PSeB2) showed a lower band gap and improved charge carrier mobility as high as 1.35 × 10-3 cm2 V-1 s-1.

