A New Tetracyclic Lactam Building Block for Thick, Broad-Bandgap Photovoltaics

Kroon, Renee, 1982 (author): University of S Australia, Australia Chalmers, Sweden,University of South Australia,Chalmers tekniska högskola,Chalmers University of Technology

Diaz de Zerio Mendaza, Amaia, 1986 (author): Chalmers, Sweden,Chalmers tekniska högskola,Chalmers University of Technology

Himmelberger, Scott, 1988 (author): Stanford University, CA 94305 USA,Chalmers tekniska högskola,Chalmers University of Technology

Bergqvist, Jonas (author): Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska högskolan,Stanford University

Bäcke, Olof, 1984 (author): Chalmers, Sweden,Chalmers tekniska högskola,Chalmers University of Technology

Couto Faria, Gregorio (author): Stanford University, CA 94305 USA University of Sao Paulo, Brazil,Universidade de Sao Paulo (USP),University of Sao Paulo (USP)

Gao, Feng (author): Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska högskolan,Linköping University

Zhuang, Wenliu, 1979 (author): Chalmers, Sweden,Chalmers tekniska högskola,Chalmers University of Technology

Gedefaw, Desta Antenehe, 1971 (author): Chalmers, Sweden,Chalmers tekniska högskola,Chalmers University of Technology

Olsson, Eva, 1960 (author): Chalmers, Sweden,Chalmers tekniska högskola,Chalmers University of Technology

Inganäs, Olle (author): Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska högskolan,Linköping University

Müller, Christian, 1980 (author): Chalmers, Sweden,Chalmers tekniska högskola,Chalmers University of Technology

Andersson, Mats, 1966 (author): University of S Australia, Australia Chalmers, Sweden,Chalmers tekniska högskola,Chalmers University of Technology

(creator_code:org_t)

2014-08-06
2014
English.
In: Journal of the American Chemical Society. - : American Chemical Society. - 0002-7863 .- 1520-5126. ; 136:33, s. 11578-11581

Related links:: http://dx.doi.org/10...; show more...; https://urn.kb.se/re...; https://doi.org/10.1...; https://research.cha...; show less...

Abstract Subject headings

A new tetracyclic lactam building block for polymer semiconductors is reported that was designed to combine the many favorable properties that larger fused and/or amide-containing building blocks can induce, including improved solid-state packing, high charge carrier mobility, and improved charge separation. Copolymerization with thiophene resulted in a semicrystalline conjugated polymer, PTNT, with a broad bandgap of 2.2 eV. Grazing incidence wide-angle X-ray scattering of PTNT thin films revealed a strong tendency for face-on pi-stacking of the polymer backbone, which was retained in PTNT:firllerene blends. Corresponding solar cells featured a high open-circuit voltage of 0.9 V, a fill factor around 0.6, and a power conversion efficiency as high as 596 for greater than200 nm thick active layers, regardless of variations in blend stoichiometry and nanostructure. Moreover, efficiencies of greater than4% could be retained when thick active layers of similar to 400 rim were employed. Overall, these values are the highest reported for a conjugated polymer with such a broad bandgap and are unprecedented in materials for tandem and particularly ternary blend photovoltaics. Hence, the newly developed tetracyclic lactam unit has significant potential as a conjugated building block in future organic electronic materials.

By the author/editor: Kroon, Renee, 19 ...; Diaz de Zerio Me ...; Himmelberger, Sc ...; Bergqvist, Jonas; Bäcke, Olof, 198 ...; Couto Faria, Gre ...; show more...; Gao, Feng; Obaid, Abdulmali ...; Zhuang, Wenliu, ...; Gedefaw, Desta A ...; Olsson, Eva, 196 ...; Inganäs, Olle; Salleo, Alberto; Müller, Christia ...; Andersson, Mats, ...; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Polymer Chemistr ...

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