Optical and electrical properties of SnO2 thin films after ultra-short pulsed laser annealing

D. Scorticati, A. Illiberi, G.R.B.E. Römer, T. Bor, W. Ogieglo, M. Klein Gunnewiek, A. Lenferink, C. Otto, J.Z.P. Skolski, F. Grob, D.F. de Lange, A.J. Huis in 't Veld

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

2 Citations (Scopus)

Abstract

Ultra-short pulsed laser sources, with pulse durations in the ps and fs regime, are commonly exploited for cold ablation. However, operating ultra-short pulsed laser sources at fluence levels well below the ablation threshold allows for fast and selective thermal processing. The latter is especially advantageous for the processing of thin films. A precise control of the heat affected zone, as small as tens of nanometers, depending on the material and laser conditions, can be achieved. It enables the treatment of the upper section of thin films with negligible effects on the bulk of the film and no thermal damage of sensitive substrates below. By applying picosecond laser pulses, the optical and electrical properties of 900 nm thick SnO2 films, grown by an industrial CVD process on borofloat®-glass, were modified. The treated films showed a higher transmittance of light in the visible and near infra-red range, as well as a slightly increased electrical sheet resistance. Changes in optical properties are attributed to thermal annealing, as well as to the occurrence of Laser-Induced Periodic Surface Structures (LIPSSs) superimposed on the surface of the SnO2 film. The small increase of electrical resistance is attributed to the generation of laser induced defects introduced during the fast heating-quenching cycle of the film. These results can be used to further improve the performance of SnO2-based electrodes for solar cells and/or electronic devices.
Original languageEnglish
Title of host publicationLaser material processing for solar energy devices II
EditorsEdward W. Reutzel
Place of PublicationSan Diego, CA, USA
PublisherSPIE
Pages1-12
Number of pages12
DOIs
Publication statusPublished - 25 Aug 2013
EventLaser Materials Processing for Solar Energy Devices II - San Diego, United States
Duration: 25 Aug 201329 Aug 2013

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X

Conference

ConferenceLaser Materials Processing for Solar Energy Devices II
CountryUnited States
CitySan Diego
Period25/08/1329/08/13

Keywords

  • METIS-298440
  • IR-87368

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