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Laser crystallization and localized growth of nanomaterials for solar applications

  • Jung Bin In
  • , Sang Gil Ryu
  • , Daeho Lee
  • , Sanghoon Ahn
  • , Andy Cheng Zheng
  • , David J.S. Hwang
  • , Costas P. Grigoropoulos
  • University of California at Berkeley

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

2 Scopus citations

Abstract

Laser-assisted localized growth of semiconducting nanostructures is reported. As is the case of conventional crystal growth, localized laser enables three kinds of crystal growth: (1) melt growth (recrystallization) of amorphous silicon nanopillars by pulsed laser; (2) vapor growth (chemical vapor deposition) of germanium nanowires; (3) solution growth (hydrothermal growth) of zinc oxide nanowires. The results not only demonstrate programmable and digital fabrication of laser-assisted crystal growth, but also reveal unusual growth chacracteristics (grain morphologies, growth kinetics). Related to solar applications, it is suggested that these structures can act as epitaxial seeds for growth of coarse grains and as multi-spectral centers for enhanced and engineered light absorption.

Original languageEnglish
Title of host publicationLaser Material Processing for Solar Energy Devices II
DOIs
StatePublished - 2013
EventLaser Material Processing for Solar Energy Devices II - San Diego, CA, United States
Duration: Aug 28 2013Aug 29 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8826
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceLaser Material Processing for Solar Energy Devices II
Country/TerritoryUnited States
CitySan Diego, CA
Period08/28/1308/29/13

Keywords

  • In situ TEM
  • Laser CVD
  • Laser crystallization
  • Laser material processing
  • Nanostructure

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