Skip to main navigation Skip to search Skip to main content

Thinning of CIGS solar cells: Part I: Chemical processing in acidic bromine solutions

  • M. Bouttemy
  • , P. Tran-Van
  • , I. Gerard
  • , T. Hildebrandt
  • , A. Causier
  • , J. L. Pelouard
  • , G. Dagher
  • , Z. Jehl
  • , N. Naghavi
  • , G. Voorwinden
  • , B. Dimmler
  • , M. Powalla
  • , J. F. Guillemoles
  • , D. Lincot
  • , A. Etcheberry
  • Institut Lavoisier de Versailles
  • Centre de Nanosciences et de Nanotechnologies
  • Centre national de la recherche scientifique
  • Wuerth Elektronik Research GmbH
  • Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)

Abstract

CIGSe absorber was etched in HBr/Br2/H2O to prepare defined thicknesses of CIGSe between 2.7 and 0.5 μm. We established a reproducible method of reducing the absorber thickness via chemical etching. We determine the dissolution kinetics rate of CIGSe using trace analysis by graphite furnace atomic absorption spectrometry of Ga and Cu. The roughness of the etching surface decreases during the first 500 nm of the etching to a steady state value of the root-mean-square roughness near 50 nm. X-ray photoelectron spectroscopy analyses demonstrate an etching process occurring with a constant chemical composition of the treated surface acidic bromine solutions provide a controlled chemical thinning process resulting in an almost flat surface and a very low superficial Se0 enrichment.

Original languageEnglish
Pages (from-to)7207-7211
Number of pages5
JournalThin Solid Films
Volume519
Issue number21
DOIs
Publication statusPublished - 31 Aug 2011

Keywords

  • AFM
  • Bromine
  • CIGS
  • Dissolution kinetic
  • Etching
  • GF-AAS
  • Roughness
  • Selenium
  • XPS

Fingerprint

Dive into the research topics of 'Thinning of CIGS solar cells: Part I: Chemical processing in acidic bromine solutions'. Together they form a unique fingerprint.

Cite this