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作者:

Huang, Rui (Huang, Rui.) | Wang, Zhiyong (Wang, Zhiyong.) | Wu, Kai (Wu, Kai.) | Xu, Hao (Xu, Hao.) | Wang, Qing (Wang, Qing.) | Guo, Yecai (Guo, Yecai.)

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摘要:

High-quality bonding of 4-inch GaAs and Si is achieved using plasma-activated bonding technology. The influence of Ar plasma activation on surface morphology is discussed. When the annealing temperature is 300 ℃, the bonding strength reaches a maximum of 6.2 MPa. In addition, a thermal stress model for GaAs/Si wafers is established based on finite element analysis to obtain the distribution of equivalent stress and deformation variables at different temperatures. The shape variation of the wafer is directly proportional to the annealing temperature. At an annealing temperature of 400 ℃, the maximum protrusion of 4 inches GaAs/Si wafers is 3.6 mm. The interface of GaAs/Si wafers is observed to be dense and defect-free using a transmission electron microscope. The characterization of interface elements by X-ray energy dispersion spectroscopy indicates that the elements at the interface undergo mutual diffusion, which is beneficial for improving the bonding strength of the interface. There is an amorphous transition layer with a thickness of about 5 nm at the bonding interface. The preparation of Si-based GaAs heterojunctions can enrich the types of materials required for the development of integrated circuits, improve the performance of materials and devices, and promote the development of microelectronics technology. © 2024 Chinese Institute of Electronics.

关键词:

III-V semiconductors Silicon wafers Microelectronics Wafer bonding Annealing Surface morphology Temperature Thermal stress Gallium arsenide Morphology Chemical activation Heterojunctions Semiconducting gallium Transmission electron microscopy

作者机构:

  • [ 1 ] [Huang, Rui]School of Electronic and Information Engineering, Wuxi University, Wuxi; 214105, China
  • [ 2 ] [Wang, Zhiyong]Institute of Advanced Technology on Semiconductor Optics & Electronics, Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China
  • [ 3 ] [Wu, Kai]School of Electronic and Information Engineering, Wuxi University, Wuxi; 214105, China
  • [ 4 ] [Xu, Hao]School of Electronic and Information Engineering, Wuxi University, Wuxi; 214105, China
  • [ 5 ] [Wang, Qing]School of Electronic and Information Engineering, Wuxi University, Wuxi; 214105, China
  • [ 6 ] [Guo, Yecai]School of Electronic and Information Engineering, Wuxi University, Wuxi; 214105, China

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来源 :

Journal of Semiconductors

ISSN: 1674-4926

年份: 2024

期: 4

卷: 45

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