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Absorption enhancement through Fabry-Pérot resonant modes in a 430 nm thick InGaAs/GaAsP multiple quantum wells solar cell

  • B. Behaghel
  • , R. Tamaki
  • , N. Vandamme
  • , K. Watanabe
  • , C. Dupuis
  • , N. Bardou
  • , H. Sodabanlu
  • , A. Cattoni
  • , Y. Okada
  • , M. Sugiyama
  • , S. Collin
  • , J. F. Guillemoles
  • Centre de Nanosciences et de Nanotechnologies
  • Institut Photovoltaïque d'Ile-de-France
  • Tokyo University
  • University of Tokyo

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

We study light management in a 430 nm-thick GaAs p-i-n single junction solar cell with 10 pairs of InGaAs/GaAsP multiple quantum wells (MQWs). The epitaxial layer transfer on a gold mirror improves light absorption and increases the external quantum efficiency below GaAs bandgap by a factor of four through the excitation of Fabry-Perot resonances. We show a good agreement with optical simulation and achieve around 10% conversion efficiency. We demonstrate numerically that this promising result can be further improved by anti-reflection layers. This study paves the way to very thin MQWs solar cells.

Original languageEnglish
Article number081107
JournalApplied Physics Letters
Volume106
Issue number8
DOIs
Publication statusPublished - 23 Feb 2015

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