Tellurium-Containing Conjugated Materials for Solar Cells: From Sulfur to Tellurium

Conference · Wed Apr 03 00:00:00 EDT 2013

OSTI ID:1073705

S, Park Y; Kale, T; Wu, Q; Ocko, B M

A series of diketopyrrolopyrrole(DPP)-based small molecules have been synthesized by palladium-catalyzed coupling reactions. Electron-donating moieties (benzothiophene, benzoselenophene, and benzotellurophene) are bridged by an electron-withdrawing DPP unit to generate donor-acceptor-donor (D-A-D) type molecules. We observe red-shifts in absorption spectra of these compounds by varying heteroatoms from sulfur to tellurium. In bulk heterojunction solar cells with [6,6]phenyl-C61-butyric acid methyl ester (PC61BM) as acceptor, we obtain power conversion efficiencies of 2.4% (benzothiophene), 4.1% (benzoselenophene), and 3.0% (benzotellurophene), respectively.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
• Sponsoring Organization: LABORATORY-DIRECTED RESEARCH AND DEVELOPMENT
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 1073705
• Report Number(s): BNL-100582-2013-CP; R&D Project: 09-003
• Resource Relation: Conference: 2013 MRS Spring Meeting; San Francisco, CA; 20130403 through 20130403
• Country of Publication: United States
• Language: English

Related Subjects

14
solar cells
tellurium
functional nanomaterials