Zhao, S., Butera, S., Lioliou, G. et al. (2 more authors) (2019) AlInP photodiode x-ray detectors. Journal of Physics D: Applied Physics, 52 (22). 225101. ISSN 0022-3727
Abstract
Four Al0.52In0.48P p+-i-n+ mesa photodiodes with 6 μm thick i layers and two different diameters (217 μm ± 15 μm and 409 μm ± 28 μm) were studied at room temperature (24 °C). Electrical characterisation measurements are reported along with measurements showing the performance of the devices as x-ray detectors. The devices exhibited leakage currents <3 pA (corresponding to leakage current densities <2 nA cm−2) at 100 V reverse bias (electric field strength of 167 kV cm−1). The photodiodes were coupled to a custom-made low-noise charge-sensitive preamplifier, the noise characteristics of the resultant spectrometers were investigated as functions of shaping times. The best energy resolutions (full width at half maximum of the 5.9 keV photopeak from an 55Fe radioisotope x-ray source) achieved with the 217 μm ± 15 μm and 409 μm ± 28 μm diameter photodiodes were 0.89 keV and 1.05 keV, respectively. The dielectric dissipation factor of Al0.52In0.48P was estimated to be (2.2 ± 1.1) × 10−3 at room temperature.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 IOP Publishing Ltd. This is an author-produced version of a paper subsequently published in Journal of Physics D: Applied Physics. Uploaded in accordance with the publisher's self-archiving policy. This Accepted Manuscript is available for reuse under a CC BY-NC-ND 3.0 licence after the 12 month embargo period. (https://creativecommons.org/licenses/by-nc-nd/3.0/) |
Keywords: | x-ray spectroscopy; photodiode; aluminium indium phosphide; dielectric dissipation factor |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 21 Oct 2020 12:06 |
Last Modified: | 21 Oct 2020 12:25 |
Status: | Published |
Publisher: | IOP Publishing |
Refereed: | Yes |
Identification Number: | 10.1088/1361-6463/ab0d65 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:167000 |
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