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Molecular helices as electron acceptors in high-performance bulk heterojunction solar cells.
Zhong, Yu; Trinh, M Tuan; Chen, Rongsheng; Purdum, Geoffrey E; Khlyabich, Petr P; Sezen, Melda; Oh, Seokjoon; Zhu, Haiming; Fowler, Brandon; Zhang, Boyuan; Wang, Wei; Nam, Chang-Yong; Sfeir, Matthew Y; Black, Charles T; Steigerwald, Michael L; Loo, Yueh-Lin; Ng, Fay; Zhu, X-Y; Nuckolls, Colin.
Afiliación
  • Zhong Y; Department of Chemistry, Columbia University, 3000 Broadway, Havemeyer Hall, MC3130, New York, New York 10027, USA.
  • Trinh MT; Department of Chemistry, Columbia University, 3000 Broadway, Havemeyer Hall, MC3130, New York, New York 10027, USA.
  • Chen R; Department of Chemistry, Columbia University, 3000 Broadway, Havemeyer Hall, MC3130, New York, New York 10027, USA.
  • Purdum GE; School of Chemical Engineering and Technology, Wuhan University of Science and Technology, Wuhan 430081, China.
  • Khlyabich PP; Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, USA.
  • Sezen M; Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, USA.
  • Oh S; Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, USA.
  • Zhu H; Department of Chemistry, Columbia University, 3000 Broadway, Havemeyer Hall, MC3130, New York, New York 10027, USA.
  • Fowler B; Department of Chemistry, Columbia University, 3000 Broadway, Havemeyer Hall, MC3130, New York, New York 10027, USA.
  • Zhang B; Department of Chemistry, Columbia University, 3000 Broadway, Havemeyer Hall, MC3130, New York, New York 10027, USA.
  • Wang W; Department of Chemistry, Columbia University, 3000 Broadway, Havemeyer Hall, MC3130, New York, New York 10027, USA.
  • Nam CY; Department of Chemistry, Columbia University, 3000 Broadway, Havemeyer Hall, MC3130, New York, New York 10027, USA.
  • Sfeir MY; Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York, New York 11973, USA.
  • Black CT; Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York, New York 11973, USA.
  • Steigerwald ML; Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York, New York 11973, USA.
  • Loo YL; Department of Chemistry, Columbia University, 3000 Broadway, Havemeyer Hall, MC3130, New York, New York 10027, USA.
  • Ng F; Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, USA.
  • Zhu XY; Department of Chemistry, Columbia University, 3000 Broadway, Havemeyer Hall, MC3130, New York, New York 10027, USA.
  • Nuckolls C; Department of Chemistry, Columbia University, 3000 Broadway, Havemeyer Hall, MC3130, New York, New York 10027, USA.
Nat Commun ; 6: 8242, 2015 Sep 18.
Article en En | MEDLINE | ID: mdl-26382113
Despite numerous organic semiconducting materials synthesized for organic photovoltaics in the past decade, fullerenes are widely used as electron acceptors in highly efficient bulk-heterojunction solar cells. None of the non-fullerene bulk heterojunction solar cells have achieved efficiencies as high as fullerene-based solar cells. Design principles for fullerene-free acceptors remain unclear in the field. Here we report examples of helical molecular semiconductors as electron acceptors that are on par with fullerene derivatives in efficient solar cells. We achieved an 8.3% power conversion efficiency in a solar cell, which is a record high for non-fullerene bulk heterojunctions. Femtosecond transient absorption spectroscopy revealed both electron and hole transfer processes at the donor-acceptor interfaces. Atomic force microscopy reveals a mesh-like network of acceptors with pores that are tens of nanometres in diameter for efficient exciton separation and charge transport. This study describes a new motif for designing highly efficient acceptors for organic solar cells.
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Texto completo: 1 Base de datos: MEDLINE Asunto principal: Perileno / Polímeros / Semiconductores / Energía Solar / Electrones / Imidas Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2015 Tipo del documento: Article
Texto completo
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Texto completo: 1 Base de datos: MEDLINE Asunto principal: Perileno / Polímeros / Semiconductores / Energía Solar / Electrones / Imidas Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2015 Tipo del documento: Article