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Charge Transfer from Carbon Nanotubes to Silicon in Flexible Carbon Nanotube/Silicon Solar Cells.
Li, Xiaokai; Mariano, Marina; McMillon-Brown, Lyndsey; Huang, Jing-Shun; Sfeir, Matthew Y; Reed, Mark A; Jung, Yeonwoong; Taylor, André D.
Afiliación
  • Li X; Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, 06511, USA.
  • Mariano M; Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, 06511, USA.
  • McMillon-Brown L; Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, 06511, USA.
  • Huang JS; Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, 06511, USA.
  • Sfeir MY; Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, 11973, USA.
  • Reed MA; Department of Electrical Engineering, Yale University, New Haven, CT, 06520, USA.
  • Jung Y; Department of Applied Physics, Yale University, New Haven, CT, 06520, USA.
  • Taylor AD; NanoScience Technology Center, Electrical and Computer Engineering, Materials Science and Engineering, University of Central Florida, Orlando, FL, 32816, USA.
Small ; 13(48)2017 12.
Article en En | MEDLINE | ID: mdl-29125720
Mechanical fragility and insufficient light absorption are two major challenges for thin flexible crystalline Si-based solar cells. Flexible hybrid single-walled carbon nanotube (SWNT)/Si solar cells are demonstrated by applying scalable room-temperature processes for the fabrication of solar-cell components (e.g., preparation of SWNT thin films and SWNT/Si p-n junctions). The flexible SWNT/Si solar cells present an intrinsic efficiency ≈7.5% without any additional light-trapping structures. By using these solar cells as model systems, the charge transport mechanisms at the SWNT/Si interface are investigated using femtosecond transient absorption. Although primary photon absorption occurs in Si, transient absorption measurements show that SWNTs also generate and inject excited charge carriers to Si. Such effects can be tuned by controlling the thickness of the SWNTs. Findings from this study could open a new pathway for designing and improving the efficiency of photocarrier generation and absorption for high-performance ultrathin hybrid SWNT/Si solar cells.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2017 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Alemania
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2017 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Alemania