Memorias de investigación
Ponencias en congresos:
Interdigitated Laser-Contacted Solar Cell on Liquid-Phase Crystallized Silicon on GLASS
Año:2017
Áreas de investigación
  • Ingenierías,
  • Ingenieria mecanica,
  • Dispositivos electrónicos,
  • Dispositivos laser,
  • Generación fotovoltaica
Datos
Descripción
10 ?m thick liquid-phase crystallized silicon (Si) layers on 3.2 mm Borofloat 33 glass (5cm x 5cm) are fabricated by continuous wave line focus laser (808 nm). A sputtered SiO2/SiON layer stack has been implemented as barrier layer at the glass Si interface. Solar cells with interdigitated back contact are prepared on these multicrystalline layers by using low temperature (<400oC) Doped-by-Laser (DopLa) fabrication concept. ALDAl2O3/ PECVD amorphous intrinsic Si carbide (SiCx(i)) stack for emitter passivation and a-SiCy(i)/P-doped a- SiCz(n)/a-SiCx(i) stack for base passivation are deposited. With short pulse (ns) UV laser (355 nm) p-type emitter (by Al-diffusion from Al2O3) and point contacts with back surface field (by P-diffusion from a-SiCz(n) layer) are fabricated on n-type mc-Si absorbers layers. Solar cell process steps are monitored by charge carrier lifetime measurements using the quasi steady-state photoconductance method. A strong dependency of charge carrier lifetime on injection level and doping density of absorbers is observed. Higher lifetimes are found for lower absorber doping concentrations. In 0.7 ?cm LPCSG absorber highest eff ? 300 ns corresponding to Leff > 20 ?m is found. Laserdoping and contacting using UV laser resulted in small (< 20 mV) loss of Voc(1sun). Crack formation in LPCSG absorbers after laser crystallization process presents technological problems in the preparation of the interdigitated metal contact.
Internacional
Si
Nombre congreso
EU PVSEC 2017 33rd European Photovoltaic Solar Energy Conference and Exhibition
Tipo de participación
970
Lugar del congreso
Amsterdam (Países Bajos)
Revisores
Si
ISBN o ISSN
3-936338-47-7
DOI
10.4229/EUPVSEC20172017-2CV.2.19
Fecha inicio congreso
25/09/2017
Fecha fin congreso
29/09/2017
Desde la página
827
Hasta la página
831
Título de las actas
33rd European Photovoltaic Solar Energy Conference and Exhibition. Proceedings of the International Conference
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: M. Vetter Leibniz-Institute of Photonic Technology (IPHT)
  • Autor: G. Lopez Universitat Politècnica de Catalunya
  • Autor: P. Ortega Universitat Politècnica de Catalunya
  • Autor: I. Martin Universitat Politècnica de Catalunya
  • Autor: G. Andra Leibniz-Institute of Photonic Technology (IPHT)
  • Autor: David Muñoz Martin UPM
  • Autor: Carlos Luis Molpeceres Alvarez UPM
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Manufactura Avanzada con Láser
  • Departamento: Física Aplicada e Ingeniería de Materiales
  • Centro o Instituto I+D+i: Centro Laser