TY - GEN
T1 - Micro texture dependence of the mechanical and electrical reliability of electroplated copper thin film interconnections
AU - Murata, Naokazu
AU - Saito, Naoki
AU - Endo, Fumiaki
AU - Tamakawa, Kinji
AU - Suzuki, Ken
AU - Miura, Hideo
PY - 2011/7/21
Y1 - 2011/7/21
N2 - Both mechanical and electronic properties of electroplated copper films used for interconnections were investigated experimentally considering the change of their micro texture caused by heat treatment. Since those properties varied drastically depending on the electroplating conditions and thermal history after the electroplating, a novel evaluation method of the crystallinity of grains and grain boundaries of the electroplated copper thin films has been proposed by applying the conventional electron back scatter diffraction method. It was found the porous grain boundaries in the films cause brittle mechanical and electrical fractures of the films. The proposed method was effective for evaluating the crystallinity of grain boundaries quantitatively, and thus, estimating both the mechanical and electrical properties of the films used for mass production.
AB - Both mechanical and electronic properties of electroplated copper films used for interconnections were investigated experimentally considering the change of their micro texture caused by heat treatment. Since those properties varied drastically depending on the electroplating conditions and thermal history after the electroplating, a novel evaluation method of the crystallinity of grains and grain boundaries of the electroplated copper thin films has been proposed by applying the conventional electron back scatter diffraction method. It was found the porous grain boundaries in the films cause brittle mechanical and electrical fractures of the films. The proposed method was effective for evaluating the crystallinity of grain boundaries quantitatively, and thus, estimating both the mechanical and electrical properties of the films used for mass production.
UR - http://www.scopus.com/inward/record.url?scp=79960414239&partnerID=8YFLogxK
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U2 - 10.1109/ECTC.2011.5898811
DO - 10.1109/ECTC.2011.5898811
M3 - Conference contribution
AN - SCOPUS:79960414239
SN - 9781612844978
T3 - Proceedings - Electronic Components and Technology Conference
SP - 2119
EP - 2125
BT - 2011 IEEE 61st Electronic Components and Technology Conference, ECTC 2011
T2 - 2011 61st Electronic Components and Technology Conference, ECTC 2011
Y2 - 31 May 2011 through 3 June 2011
ER -