Nano-imprinted rear-side diffraction gratings for absorption enhancement in solar cells

Mellor Null, Alexander Virgil; Hauser, Hubert; Guttowski, Aron; Wellens, Christine; Bläsi, Benedikt; Tobías Galicia, Ignacio; Martí Vega, Antonio y Luque López, Antonio (2012). Nano-imprinted rear-side diffraction gratings for absorption enhancement in solar cells. En: "Proceedings of SPIE. Next Generation (Nano) Photonic and Cell Technologies for Solar Energy Conversion III", 12/08/2012 - 16/08/2012, San Diego, California, USA. pp. 1-7. https://doi.org/10.1117/12.929034.

Descripción

Título: Nano-imprinted rear-side diffraction gratings for absorption enhancement in solar cells
Autor/es:
  • Mellor Null, Alexander Virgil
  • Hauser, Hubert
  • Guttowski, Aron
  • Wellens, Christine
  • Bläsi, Benedikt
  • Tobías Galicia, Ignacio
  • Martí Vega, Antonio
  • Luque López, Antonio
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: Proceedings of SPIE. Next Generation (Nano) Photonic and Cell Technologies for Solar Energy Conversion III
Fechas del Evento: 12/08/2012 - 16/08/2012
Lugar del Evento: San Diego, California, USA
Título del Libro: Proceedings of SPIE. Next Generation (Nano) Photonic and Cell Technologies for Solar Energy Conversion III
Fecha: 2012
Volumen: 8471
Materias:
Escuela: E.T.S.I. Telecomunicación (UPM)
Departamento: Otro
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

Texto completo

[img]
Vista Previa
PDF (Document Portable Format) - Se necesita un visor de ficheros PDF, como GSview, Xpdf o Adobe Acrobat Reader
Descargar (1MB) | Vista Previa

Resumen

As wafer-based solar cells become thinner, light-trapping textures for absorption enhancement will gain in importance. In this work, crystalline silicon wafers were textured with wavelength-scale diffraction grating surface textures by nanoimprint lithography using interference lithography as a mastering technology. This technique allows fine-tailored nanostructures to be realized on large areas with high throughput. Solar cell precursors were fabricated, with the surface textures on the rear side, for optical absorption measurements. Large absorption enhancements are observed in the wavelength range in which the silicon wafer absorbs weakly. It is shown experimentally that bi-periodic crossed gratings perform better than uni-periodic linear gratings. Optical simulations have been made of the fabricated structures, allowing the total absorption to be decomposed into useful absorption in the silicon and parasitic absorption in the rear reflector. Using the calculated silicon absorption, promising absorbed photocurrent density enhancements have been calculated for solar cells employing the nano-textures. Finally, first results are presented of a passivation layer deposition technique that planarizes the rear reflector for the purpose of reducing the parasitic absorption.

Más información

ID de Registro: 19795
Identificador DC: http://oa.upm.es/19795/
Identificador OAI: oai:oa.upm.es:19795
Identificador DOI: 10.1117/12.929034
URL Oficial: http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1379754
Depositado por: Memoria Investigacion
Depositado el: 17 Sep 2013 18:58
Ultima Modificación: 21 Abr 2016 21:16
  • Open Access
  • Open Access
  • Sherpa-Romeo
    Compruebe si la revista anglosajona en la que ha publicado un artículo permite también su publicación en abierto.
  • Dulcinea
    Compruebe si la revista española en la que ha publicado un artículo permite también su publicación en abierto.
  • Recolecta
  • e-ciencia
  • Observatorio I+D+i UPM
  • OpenCourseWare UPM