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A micromechanism study of thermosonic gold wire bonding on aluminium pad

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : A micromechanism study of thermosonic gold wire bonding on aluminium pad
นักวิจัย : Xu, Hui , Liu, Changqing , Silberschmidt, Vadim V. , Pramana, S. S. , White, Timothy John , Chen, Z. , Sivakumar, M. , Acoff, V. L.
คำค้น : DRNTU::Engineering::Materials.
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2553
อ้างอิง : Xu, H., Liu, C., Silberschmidt, V. V., Pramana, S. S., White, T. J., Chen, Z., et al. (2010). A micromechanism study of thermosonic gold wire bonding on aluminium pad. Journal of applied physics, 108(11). , http://hdl.handle.net/10220/7694 , http://dx.doi.org/10.1063/1.3514005
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Journal of applied physics
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

A micromechanism of thermosonic gold wire bonding was elaborated by examining its interfacial characteristics as a result of the bonding process, including the fragmentation of the native aluminum oxide layer on Al pads, and formation of initial intermetallic compounds (IMCs). It is found that the existence of an approximately 5 nm thick native oxide layer on original Al pads has a significant effect on the bonding, and the nucleation of IMCs during the bonding process must overcome this relatively inert thin film. Bonding strength was fundamentally determined by the degree of fragmentation of the oxide films, through which the formation of IMCs can be initiated due to the direct contact of the metal surfaces to be bonded. The extent of fracture the oxide layer was strongly influenced by the level of ultrasonic power, as at its high level alumina fragmentation becomes pervasive resulting in contiguous alloy interfaces and robust bonds. The IMCs formed at the interfaces were identified as Al4Al and AuAl2 with a thickness of 150–300 nm. The formation mechanism of such IMCs was explained by the effective heat of formation theory.

บรรณานุกรม :
Xu, Hui , Liu, Changqing , Silberschmidt, Vadim V. , Pramana, S. S. , White, Timothy John , Chen, Z. , Sivakumar, M. , Acoff, V. L. . (2553). A micromechanism study of thermosonic gold wire bonding on aluminium pad.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Xu, Hui , Liu, Changqing , Silberschmidt, Vadim V. , Pramana, S. S. , White, Timothy John , Chen, Z. , Sivakumar, M. , Acoff, V. L. . 2553. "A micromechanism study of thermosonic gold wire bonding on aluminium pad".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Xu, Hui , Liu, Changqing , Silberschmidt, Vadim V. , Pramana, S. S. , White, Timothy John , Chen, Z. , Sivakumar, M. , Acoff, V. L. . "A micromechanism study of thermosonic gold wire bonding on aluminium pad."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2553. Print.
Xu, Hui , Liu, Changqing , Silberschmidt, Vadim V. , Pramana, S. S. , White, Timothy John , Chen, Z. , Sivakumar, M. , Acoff, V. L. . A micromechanism study of thermosonic gold wire bonding on aluminium pad. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2553.