Effect of laser power on the characteristics of laser sintered copper nanoparticle paste
- Resource Type
- Conference
- Authors
- Xu, Guangdong; Yang, Guannan; Luo, Shaogen; Cui, Chengqiang; Zhang, Yu
- Source
- 2020 21st International Conference on Electronic Packaging Technology (ICEPT) Electronic Packaging Technology (ICEPT), 2020 21st International Conference on. :1-5 Aug, 2020
- Subject
- Components, Circuits, Devices and Systems
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Signal Processing and Analysis
Laser sintering
Power lasers
Nanoparticles
Heating systems
Finite element analysis
Glass
Copper
Copper nanoparticles
Finite Element Method
- Language
Experiments and finite element simulations were carried out to explore the effect of laser power on the sintering temperature field and the characteristics of sintered copper nanoparticle paste. Pure copper nanoparticles with a size of 300 nm were prepared by liquid phase reduction method. The copper nanoparticle paste was coated on a glass substrate and sintered by 1064 nm continuous wave laser at different laser powers. The effects of different laser powers on the surface morphology, electrical resistivity and porosity of the sintered copper paste were analyzed and discussed. A finite element simulation was carried out to simulate the temperature field distribution of laser sintered copper nanoparticle paste under the same test conditions with different powers. The results indicate a strong dependence of the electrical resistivity and surface morphology of the sintered copper paste on the laser sintering power. The method of this study can provide an approach to estimate of the temperature field distribution during the laser sintering process of nanoparticles.