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Solid Phase Crystallization of Hot-Wire CVD Amorphous Silicon Films

  • David L. Young
  • , Paul Stradins
  • , Eugene Iwaniczko
  • , Bobby To
  • , Bob Reedy
  • , Yanfa Yan
  • , Howard M. Branz
  • , John Lohr
  • , Manuel Alvarez
  • , John Booske
  • , Amy Marconnet
  • , Qi Wang
  • National Renewable Energy Laboratory
  • General Atomics
  • University of Wisconsin-Madison

Research output: Contribution to conferencePaperpeer-review

10 Scopus Citations

Abstract

We measure times for complete solid phase crystallization (SPC) of hydrogenated amorphous silicon (a-Si:H) thin films that vary eight orders of magnitude, from a few ms to a few days. The time-to-crystallization activation energy is consistent with literature values of approximately 3.4 eV but the prefactor is markedly different for hot-wire chemical vapor deposition (HWCVD) films than for plasma-enhanced (PE) CVD films. The crystallized films were 0.3 - 2 μm thick, and deposited by high deposition rate (10-100 Å/s) HWCVD or standard PECVD onto glass substrates. We annealed these a-Si:H films over a wide temperature range (500 to 1100°C) using techniques including simple hot-plates and tube furnaces, rapid thermal annealing by a tungsten-halogen lamp, and microwave electromagnetic heating at 2.45 GHz (magnetron) and 110 GHz (gyrotron).

Original languageAmerican English
Pages233-238
Number of pages6
DOIs
StatePublished - 2005
EventAmorphous and Nanocrystalline Silicon Science and Technology 2005: Materials Research Society Symposium - San Francisco, California
Duration: 28 Mar 20051 Apr 2005

Conference

ConferenceAmorphous and Nanocrystalline Silicon Science and Technology 2005: Materials Research Society Symposium
CitySan Francisco, California
Period28/03/051/04/05

NLR Publication Number

  • NREL/CP-520-37833

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