Abstract
With the application of strain engineering in microelectronics, complex stress states are introduced into advanced semiconductor devices. However, there is still a lack of effective metrology for the decoupling analysis of the complex stress states in semiconductor materials. This paper presents an investigation on the 2-axis stress component decoupling of {100} monocrystalline silicon (c-Si) by using oblique backscattering micro-Raman spectroscopy. A spectral-mechanical model was established, and two practicable methods for actual stress decoupling analyses were proposed. The verification experiments demonstrated the correctness and applicability of the methods proposed in this paper.
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This work was supported by the National Key Research and Development Program of China (Grant No. 2018YFB0703500), and the National Natural Science Foundation of China (Grant Nos. 11827802, 11772223, 11772227, 11890680, and 61727810).
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Fu, D., He, X., Ma, L. et al. The 2-axis stress component decoupling of {100} c-Si by using oblique backscattering micro-Raman spectroscopy. Sci. China Phys. Mech. Astron. 63, 294612 (2020). https://doi.org/10.1007/s11433-020-1537-y
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DOI: https://doi.org/10.1007/s11433-020-1537-y