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Sticky interconnect for solution-processed tandem solar cells.
Tung, Vincent C; Kim, Jaemyung; Cote, Laura J; Huang, Jiaxing.
Afiliación
  • Tung VC; Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA.
J Am Chem Soc ; 133(24): 9262-5, 2011 Jun 22.
Article en En | MEDLINE | ID: mdl-21615169
ABSTRACT
Graphene oxide (GO) can be viewed as a two-dimensional, random diblock copolymer with distributed nanosize graphitic patches and highly oxidized domains, thus capable of guiding the assembly of other materials through both π-π stacking and hydrogen bonding. Upon mixing GO and conducting polymer poly(3,4-ethylenedioxythiophene)poly(styrenesulfonate) (PEDOTPSS) in water, a dispersion with dramatically increased viscosity is obtained, which turns into sticky thin films upon casting. Surprisingly, the insulating GO makes PEDOT much more conductive by altering its chain conformation and morphology. The GO/PEDOT gel can function as a metal-free solder for creating mechanical and electrical connections in organic optoelectronic devices. As a proof-of-concept, polymer tandem solar cells have been fabricated by a direct adhesive lamination process enabled by the sticky GO/PEDOT film. The sticky interconnect can greatly simplify the fabrication of organic tandem architectures, which has been quite challenging via solution processing. Thus, it could facilitate the construction of high-efficiency tandem solar cells with different combinations of solution-processable materials.

Texto completo: 1 Bases de datos: MEDLINE Idioma: En Revista: J Am Chem Soc Año: 2011 Tipo del documento: Article País de afiliación: Estados Unidos

Texto completo: 1 Bases de datos: MEDLINE Idioma: En Revista: J Am Chem Soc Año: 2011 Tipo del documento: Article País de afiliación: Estados Unidos