All-polymer solar cells with 3.3% efficiency based on naphthalene diimide-selenophene copolymer acceptor.
J Am Chem Soc
; 135(40): 14960-3, 2013 Oct 09.
Article
en En
| MEDLINE
| ID: mdl-24083488
ABSTRACT
The lack of suitable acceptor (n-type) polymers has limited the photocurrent and efficiency of polymer/polymer bulk heterojunction (BHJ) solar cells. Here, we report an evaluation of three naphthalene diimide (NDI) copolymers as electron acceptors in BHJ solar cells which finds that all-polymer solar cells based on an NDI-selenophene copolymer (PNDIS-HD) acceptor and a thiazolothiazole copolymer (PSEHTT) donor exhibit a record 3.3% power conversion efficiency. The observed short circuit current density of 7.78 mA/cm(2) and external quantum efficiency of 47% are also the best such photovoltaic parameters seen in all-polymer solar cells so far. This efficiency is comparable to the performance of similarly evaluated [6,6]-Phenyl-C61-butyric acid methyl ester (PC60BM)/PSEHTT devices. The lamellar crystalline morphology of PNDIS-HD, leading to balanced electron and hole transport in the polymer/polymer blend solar cells accounts for its good photovoltaic properties.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
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En
Revista:
J Am Chem Soc
Año:
2013
Tipo del documento:
Article
País de afiliación:
Estados Unidos