Presentation 2003/12/12
Dependence of Poly-Si TFT Characteristic on Oxide Interface Traps and Grain Boundary Traps and its Application to Diagnosis of Fabrication Processes
Mutsumi KIMURA, Satoshi INOUE, Tatsuya SHIMODA,
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Abstract(in English) The dependence of poly-Si TFT characteristics on the density of oxide interface traps (Dit) and grain boundary traps (Dgb) has been analyzed. First, actual trap densities are extracted using a low-frequency C-V characteristic, I-V characteristic and extraction technique that has been developed by the authors. Next, the dependence of TFT characteristics is analyzed using device simulation by varying these trap densities from actual ones. It is found that the subthreshold swing and threshold voltage mainly depend on Dit, while the transistor mobility depends on Dgb. By applying these results to diagnosis of fabrication processes, it is found that oxygen plasma treatment reduces Dit, while PECVD-TEOS for gate-oxide generates Dgb.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Poly-Si / TFT / Oxide Interface / Grain Boundary / Trap / Diagnosis / Fabrication Process / Device Simulation
Paper # SDM2003-180(2003-12)
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Committee SDM
Conference Date 2003/12/12(1days)
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Registration To Silicon Device and Materials (SDM)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Dependence of Poly-Si TFT Characteristic on Oxide Interface Traps and Grain Boundary Traps and its Application to Diagnosis of Fabrication Processes
Sub Title (in English)
Keyword(1) Poly-Si
Keyword(2) TFT
Keyword(3) Oxide Interface
Keyword(4) Grain Boundary
Keyword(5) Trap
Keyword(6) Diagnosis
Keyword(7) Fabrication Process
Keyword(8) Device Simulation
1st Author's Name Mutsumi KIMURA
1st Author's Affiliation Department of Electronics and Informatics, Ryukoku University()
2nd Author's Name Satoshi INOUE
2nd Author's Affiliation Technology Platform Research Center, Seiko Epson Corporation
3rd Author's Name Tatsuya SHIMODA
3rd Author's Affiliation Technology Platform Research Center, Seiko Epson Corporation
Date 2003/12/12
Paper # SDM2003-180(2003-12)
Volume (vol) vol.103
Number (no) 533
Page pp.pp.-
#Pages 6
Date of Issue