Laser induced metastable phases in microcrystalline silicon

[Display omitted] It has been found using Raman spectroscopy that metastable Si phases reversibly appear in silicon microparticles (µ-Si) due to local heating on increasing the power of a He–Ne excitation laser from 0.03 to 3 mW. Prolonged annealing of these phases by laser radiation makes it possib...

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Bibliographic Details
Published in:Mendeleev communications 2023-03, Vol.33 (2), p.209-211
Main Authors: Bukalov, Sergey S., Aysin, Rinat R.
Format: Article
Language:English
Subjects:
line broadening and shifting
local heating
metastable phase
Raman spectroscopy
silicon
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Summary:[Display omitted] It has been found using Raman spectroscopy that metastable Si phases reversibly appear in silicon microparticles (µ-Si) due to local heating on increasing the power of a He–Ne excitation laser from 0.03 to 3 mW. Prolonged annealing of these phases by laser radiation makes it possible to estimate that local heating occurs to a temperature of ∼250 °C rather than 1000 °C as it was believed previously.
ISSN:0959-9436
DOI:10.1016/j.mencom.2023.02.019