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Excimer Laser Crystallization of Sputter Deposited a-Si Films on Flexible Substrates

Published online by Cambridge University Press:  17 March 2011

Yong Hoon Kim ,
Sung Kyu Park ,
Dae Gyu Moon ,
Won Keun Kim  and
Jeong In Han
Yong Hoon Kim
Affiliation:
Information Display Research Center, Korea Electronics Technology Institute, Pyungtaek, Kyunggi, Korea
Sung Kyu Park
Affiliation:
Information Display Research Center, Korea Electronics Technology Institute, Pyungtaek, Kyunggi, Korea
Dae Gyu Moon
Affiliation:
Information Display Research Center, Korea Electronics Technology Institute, Pyungtaek, Kyunggi, Korea
Won Keun Kim
Affiliation:
Information Display Research Center, Korea Electronics Technology Institute, Pyungtaek, Kyunggi, Korea
Jeong In Han
Affiliation:
Information Display Research Center, Korea Electronics Technology Institute, Pyungtaek, Kyunggi, Korea
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Abstract

In this report, excimer laser annealed polycrystalline silicon (poly-Si) films on flexible polymer substrates are investigated. The amorphous silicon (a-Si) films were first deposited on polycarbonate (PC) and polyethersulfone (PES) substrates by radio-frequency (RF) magnetron sputter and sequentially annealed by XeCl excimer laser annealing system (λ = 308 nm). The argon concentration of a-Si films which was estimated by Rutherford Backscattering Spectrometry (RBS) was found to be dependent on the dynamic pressure during the deposition process and the sputtering gas. Typically, the argon concentration of a-Si film was 1 ∼ 2% when the film was deposited using argon gas at 6 mTorr. After the annealing process, the average grain size of the poly-Si film annealed with laser energy density of 289 mJ/cm2 was 400 nm estimated from transmission electron microscope (TEM) investigations.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 814: Symposium I – Flexible Electronics 2004-Materials and Device Technology , 2004 , I7.5
Copyright
Copyright © Materials Research Society 2004

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