Projects per year
Abstract
We study the surface morphology, optical absorption (400–1100 nm), and carrier lifetime of black silicon fabricated by femtosecond (fs) laser in air. We explore a large laser parameter space, for which we adopt a single parameter ξ to describe the cumulative fluence delivered to the sample. We also study the laser-oxidized surface layer by measuring its photoluminescence spectra and comparing its effect on the aforementioned properties. Our study in a broad range of ξ is instructive in choosing laser parameters when targeting different applications.
Original language | English |
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Pages (from-to) | 1224 - 1227 |
Number of pages | 4 |
Journal | Optics Letters |
Volume | 48 |
Issue number | 5 |
DOIs | |
Publication status | Published - 1 Mar 2023 |
MoE publication type | A1 Journal article-refereed |
Fingerprint
Dive into the research topics of 'Optoelectronic properties of black silicon fabricated by femtosecond laser in ambient air: exploring a large parameter space'. Together they form a unique fingerprint.-
-: Photonics Research and Innovation
Savin, H., Liu, X. & Radfar, B.
01/09/2022 → 31/12/2026
Project: Academy of Finland: Other research funding
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NIR: Super-sensitive γ/X- and NIR-radiation detectors via defect-free nanostructures: Next Imaging Revolution?
Vähänissi, V., Savin, H., Ayedh, H., Setälä, O., Radfar, B. & Liu, H.
01/09/2020 → 31/08/2024
Project: Academy of Finland: Other research funding
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FemtoBlack: Femtosecond laser sulfur hyperdoped black silicon for infrared photonic applications
Savin, H., Yli-Koski, M., Liu, X., Setälä, O. & Radfar, B.
01/03/2020 → 28/02/2024
Project: Business Finland: Strategic centres for science, technology and innovation (SHOK)
Equipment
Activities
- 1 Conference presentation
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Carrier recombination in black silicon fabricated by high repetition rate fs-laser
Xiaolong Liu (Speaker), Behrad Radfar (Contributor), Toni Pasanen (Contributor), Ville Vähänissi (Contributor) & Hele Savin (Contributor)
30 May 2022 → 3 Jun 2022Activity: Talk or presentation types › Conference presentation