Presentation 1999/1/20
Electromigration in gold line of GaAs IC
A. Ohta, K. Yajima, N. Higashisaka, T. Heima, T. Hisaka, N. Tanino,
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Abstract(in English) We have found voids in gold line of GaAs IC under high temperature DC bias test. The voids moved toward a cathode, in the opposite direction of electron flow. The velocity of a cathode edge is larger than that of an anode edge, bringing expansion of the void. The velocity of voids increased with the current density almost proportionally. The moving mechanisms of a void can be explained by assuming that gold atoms move toward an anode by electromigration. The activation energy of the void velocity was 0.84 eV at the cathode side. The GaAs IC failed at the almost same time as the voids appeared. The activation energy of MTF(mean time to failure)of the IC was 0.89 eV, which was nearly equal to that of the void velocity at the cathode edge of 0.84 eV.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Electromigration / Void / Interconnection / Activation energy / GaAs IC
Paper # ED98-190,MW98-153,ICD98-257
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Conference Date 1999/1/20(1days)
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Registration To Integrated Circuits and Devices (ICD)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Electromigration in gold line of GaAs IC
Sub Title (in English)
Keyword(1) Electromigration
Keyword(2) Void
Keyword(3) Interconnection
Keyword(4) Activation energy
Keyword(5) GaAs IC
1st Author's Name A. Ohta
1st Author's Affiliation Mitsubishi Electric Corporation High Frequency & Optical Semiconductor Div.()
2nd Author's Name K. Yajima
2nd Author's Affiliation Mitsubishi Electric Corporation High Frequency & Optical Semiconductor Div.
3rd Author's Name N. Higashisaka
3rd Author's Affiliation Mitsubishi Electric Corporation High Frequency & Optical Semiconductor Div.
4th Author's Name T. Heima
4th Author's Affiliation Mitsubishi Electric Corporation High Frequency & Optical Semiconductor Div.
5th Author's Name T. Hisaka
5th Author's Affiliation Mitsubishi Electric Corporation High Frequency & Optical Semiconductor Div.
6th Author's Name N. Tanino
6th Author's Affiliation Mitsubishi Electric Corporation High Frequency & Optical Semiconductor Div.
Date 1999/1/20
Paper # ED98-190,MW98-153,ICD98-257
Volume (vol) vol.98
Number (no) 523
Page pp.pp.-
#Pages 7
Date of Issue