Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
A substrate removal processing method for III-V solar cells compatible with low-temperature characterization
Year:2017
Research Areas
  • Semiconductors ii-vi, iii-v and iv-iv,
  • Solar cells,
  • Photovoltaic generation
Information
Abstract
In this work, we present a substrate removal procedure for solar cells compatible with direct attachment of the epitaxy to a holder through a thermally and electrically conductive interface. In our case this procedure was motivated by the need to develop a processing technique compatible with low-temperature characterization of the devices. The method is based on the use of indium to bond a thin-film epitaxial structure to a silicon support. The adequate properties of indium, namely, low tensile strength and good thermal and electrical conductivity, allow characterizing the devices at very low temperatures without causing strain-induced degradation in the samples. Following this method, we have fabricated and characterized thin-film (1.74 µm) AlGaAs solar cells with and without a layer of InAs quantum dots. We show the adequacy of our method to measure at low temperatures by means of measuring the photocurrent or quantum efficiency of the devices at different temperatures, ranging from 300 K to 20 K.
International
Si
JCR
Si
Title
Materials Science in Semiconductor Processing
ISBN
1369-8001
Impact factor JCR
2,359
Impact info
Volume
63
10.1016/j.mssp.2017.02.003
Journal number
From page
58
To page
63
Month
SIN MES
Ranking
Participants
  • Autor: Juan Villa Morales (UPM)
  • Autor: Iñigo Ramiro Gonzalez (UPM)
  • Autor: J.M. Ripalda
  • Autor: Elisa Antolin Fernandez (UPM)
  • Autor: Ivan Garcia Vara (UPM)
  • Autor: Antonio Marti Vega (UPM)
Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: Instituto de Energía Solar
  • Departamento: Electrónica Física, Ingeniería Eléctrica y Física Aplicada
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)