A Comprehensive Study of the Sintering of Copper Nanoparticles Using Femtosecond, Nanosecond, and Continuous Wave Lasers
A Comprehensive Study of the Sintering of Copper Nanoparticles Using Femtosecond, Nanosecond, and Continuous Wave Lasers
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使用飞秒、纳秒和连续波激光器烧结铜纳米粒子的综合研究
DOI:
10.1115/1.4038455
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发表时间:
2018
影响因子:
1
通讯作者:
Cullinan, Michael A.
中科院分区:
文献类型:
--
作者:
Roy, Nilabh K.;Dibua, Obehi G.;Jou, William;He, Feng;Jeong, Jihoon;Wang, Yaguo;Cullinan, Michael A.
A high electrical and thermal conductivity coupled with low costs make copper (Cu) an enticing alternative to aluminum for the fabrication of interconnects in packaging applications. To tap into the benefits of the ever-reducing size of transistors, it is required to increase the input/output pin count on electronic chips, and thus, minimize the size of chip to board interconnects. Laser sintering of Cu nanoparticle (NP) inks can serve as a promising process for developing these micron sized, 3D interconnect structures. However, the exact processing windows for Cu NP sintering are not well known. Therefore, this paper presents an extensive experimental investigation of the sintering processing window with different lasers including femtosecond (fs), nanosecond (ns), and continuous-wave (CW) lasers. The dependence of the processing window on Cu layer thicknesses and laser exposure durations has also been investigated. A simplified model to estimate optimum laser sintering windows for Cu NPs using pulsed lasers is presented and the predicted estimates are compared against the experimental results. Given the simplicity of the model, it is shown to provide good estimates for fluence required for the onset of sintering and the processing window for good sintering of Cu NPs.
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DOI:
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发表时间:
2016
期刊:
影响因子:
--
作者:
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通讯作者:
M. Cullinan
DOI:
--
发表时间:
2014
期刊:
Workshop on Autonomic Communication
影响因子:
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作者:
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DOI:
--
发表时间:
2017
期刊:
影响因子:
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作者:
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M. Cullinan
DOI:
--
发表时间:
2015
期刊:
影响因子:
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Yuwen Zhang;D. Tzou;J. K. Chen
通讯作者:
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DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
N. Roy;O. Dibua;C. S. Foong;M. Cullinan
通讯作者:
M. Cullinan