University of California

Mitsubishi Chemical Corporation

Medimmune Limited

Javier Read De Alaniz

Michael L Chabinyc

Hengbin Wang

Hidenori Nakayama

Kyle D Clark

Julia Schneider

Changshou Gao

Ronald James Christie

Andre Henri St Amant

Triazabicylodecene can effectively n-dope a variety of organic semiconductors, including PCBM, thus increasing in-plane conductivities. We synthesized a series of TBD-based n-dopants via an N-alkylation reaction and studied the effect of various alkyl chains on the physical and device properties of the dopants. Combining two TBD moieties on a long alky chain gave a solid dopant, 2TBD-C10, with high thermal stability above 250° C. PCBM films doped by 2TBD-C10 were the most tolerant to thermal annealing and reached in-plane conductivities of 6.5×10S/cm. Furthermore, incorporating 2TBD-C10 doped PCBM as the electron transport layer (ETL) in methylammonium lead triiodide (MAPbI) based photovoltaics led to a 23% increase in performance, from 11.8% to 14.5% PCE.

N-type dopants for efficient solar cells

The present invention provides a bioconjugation method and compounds for use therein. The bioconjugation method comprises the step of conjugating a biological molecule containing a first unsaturated functional group with a payload comprising a second unsaturated functional group, wherein the first and second unsaturated functional groups are complementary to each other such that conjugation is a reaction of said functional groups via a Diels-Alder reaction which forms a cyclohexene ring.

Method and molecules

Triazabicylodecene can effectively n-dope a variety of organic semiconductors, including PCBM, thus increasing in-plane conductivities. We synthesized a series of TBD-based n-dopants via an N-alkylation reaction and studied the effect of various alkyl chains on the physical and device properties of the dopants. Combining two TBD moieties on a long alky chain gave a solid dopant, 2TBD-C10, with high thermal stability above 250&#xb0; C. PCBM films doped by 2TBD-C10 were the most tolerant to thermal annealing and reached in-plane conductivities of 6.5&#xd7;10S/cm. Furthermore, incorporating 2TBD-C10 doped PCBM as the electron transport layer (ETL) in methylammonium lead triiodide (MAPbI) based photovoltaics led to a 23% increase in performance, from 11.8% to 14.5% PCE.

Growing community of inventors

Oakland, CA, United States of America

Javier Read De Alaniz