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. (Principal investigator), Liu, X. (Project Member), Radfar, B. (Project Member), Vähänissi, V. (Project Member) & Yli-Koski, M. (Project Member)
01/09/2022 → 31/12/2026
Project: Academy of Finland: Other research funding
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NanoWires (EMPIR): High throughput metrology for nanowire energy harvesting devices
Savin, H. (Principal investigator), Pasanen, T. (Project Member) & Chen, K. (Project Member)
01/09/2020 → 31/08/2023
Project: EU other competitive funding (ERA-NET, EURAMET, EUREKA, EU JU)
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NIR: Super-sensitive ?/X- and NIR-radiation detectors via defect-free nanostructures: Next Imaging Revolution?
Vähänissi, V. (Principal investigator), Savin, H. (Project Member), Ayedh, H. (Project Member), Setälä, O. (Project Member), Radfar, B. (Project Member), Liu, H. (Project Member), Terletskaia, M. (Project Member), Lahtiluoma, L. (Project Member), Räisänen, S. (Project Member), Leiviskä, O. (Project Member) & Gosalvez, S. (Project Member)
01/09/2020 → 31/08/2024
Project: Academy of Finland: Other research funding
Equipment
Activities
- 1 Conference presentation
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Carrier recombination in black silicon fabricated by high repetition rate fs-laser
Liu, X. (Speaker), Radfar, B. (Contributor), Pasanen, T. (Contributor), Vähänissi, V. (Contributor) & Savin, H. (Contributor)
30 May 2022 → 3 Jun 2022Activity: Talk or presentation types › Conference presentation
Research output
- 5 Citations
- 1 Abstract
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(oral talk) Carrier recombination in black silicon fabricated by high repetition rate fs-laser
Liu, X., Radfar, B., Pasanen, T., Vähänissi, V. & Savin, H., 30 May 2022.Research output: Contribution to conference › Abstract › Scientific › peer-review
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