Presentation 2005/4/15
Metal Induced Lateral Crystallization of Doped Amorphous Si Films
Gou NAKAGAWA, Noritoshi SHIBATA, Tanemasa ASANO,
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Abstract(in English) The characteristics of metal induced lateral crystallization (MILC) of B(BF_2)- or P-doped a-Si thin films have been investigated. Lateral growth rate in B-doped films was increased compared with that in non-doped films (conventional MILC) at 590℃. It was also found that lateral growth rate is proportional to the B dose. At low annealing temperature, needle-like Si crystallites were observed to frequently change the growth direction and branching of the crystallite during growth frequently took place in B-doped films. Besides, B-doped a-Si was densely crystallized from Ni-supply region to growth front because the epitaxial growth of a-Si from needle-like Si crystallites was enhanced by the doping effect of B atoms. On the other hand, lateral growth rate in P-doped films was decreased when the P dose is 2×10^<15>cm^<-2>. This result indicates that P atoms introduced into a-Si interrupt the diffusion of Ni. It is noteworthy that the side of needle-like Si crystallites in P-doped films are covered with the epitaxially grown crystals and consequently straightly grow. This result suggests that "turn or branch" of NiSi_2 precipitate is prevented because the width of the crystallite broadens by the epitaxial growth as soon as the needle-like Si grows by MILC
Keyword(in Japanese) (See Japanese page)
Keyword(in English) poly-Si / metal induced lateral crystallization / dopant / needle-like Si / NiSi_2 / epitaxial growth
Paper # ED2005-15,SDM2005-15,OME2005-15
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Committee OME
Conference Date 2005/4/15(1days)
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Registration To Organic Material Electronics (OME)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Metal Induced Lateral Crystallization of Doped Amorphous Si Films
Sub Title (in English)
Keyword(1) poly-Si
Keyword(2) metal induced lateral crystallization
Keyword(3) dopant
Keyword(4) needle-like Si
Keyword(5) NiSi_2
Keyword(6) epitaxial growth
1st Author's Name Gou NAKAGAWA
1st Author's Affiliation Center for Microelectronic Systems, Kyushu Institute of Technology()
2nd Author's Name Noritoshi SHIBATA
2nd Author's Affiliation Center for Microelectronic Systems, Kyushu Institute of Technology
3rd Author's Name Tanemasa ASANO
3rd Author's Affiliation Center for Microelectronic Systems, Kyushu Institute of Technology
Date 2005/4/15
Paper # ED2005-15,SDM2005-15,OME2005-15
Volume (vol) vol.105
Number (no) 23
Page pp.pp.-
#Pages 5
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