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Abstract
Black silicon induced junction photodiodes have nearly ideal responsivity across a wide range of wavelengths between 175-1100 nm, with external quantum efficiency over 99 % at visible wavelengths, when a single spot is measured using light beam between 1 to 2mm in diameter. The spatial uniformity of responsivity is also an important characteristic of a high-quality photodiode, when considering its usage as a reference in photometry. We study here the spatial uniformity of responsivity of large area (8mmx8mm) black silicon photodiodes at 405 nm wavelength. Our results show that the spatial non-uniformity is less than 0.5 % over 90 % of the surface area, and thus the photodiodes meet the thigh criteria typically set for reference standards and are hence suitable for such application.
Original language | English |
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Title of host publication | Optical Components and Materials XX |
Editors | Shibin Jiang, Michel J. Digonnet |
Publisher | SPIE |
Number of pages | 7 |
ISBN (Electronic) | 978-1-5106-5940-7 |
ISBN (Print) | 978-1-5106-5939-1 |
DOIs | |
Publication status | Published - 14 Mar 2023 |
MoE publication type | A4 Conference publication |
Event | Optical Components and Materials - San Francisco, United States Duration: 28 Jan 2023 → 3 Feb 2023 Conference number: 20 |
Publication series
Name | Proceedings of SPIE : the International Society for Optical Engineering |
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Publisher | SPIE |
ISSN (Print) | 0277-786X |
ISSN (Electronic) | 1996-756X |
Conference
Conference | Optical Components and Materials |
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Country/Territory | United States |
City | San Francisco |
Period | 28/01/2023 → 03/02/2023 |
Keywords
- Black silicon
- spatial uniformity
- silicon
- photodiode
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Dive into the research topics of 'Spatial uniformity of black silicon induced junction photodiode responsivity'. Together they form a unique fingerprint.Projects
- 1 Finished
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PREIN: Photonics Research and Innovation
Mäkelä, K. (Principal investigator)
01/01/2019 → 31/12/2022
Project: Academy of Finland: Other research funding