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THz photoconductivity dynamics of semiconductors from sub-nanosecond to millisecond timescales
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Butler-Caddle, Edward, Khrushchev, Igor, Pain, Sophie L., Grant, Nicholas E., Murphy, John D. and Lloyd-Hughes, James (2022) THz photoconductivity dynamics of semiconductors from sub-nanosecond to millisecond timescales. In: 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), Delft, Netherlands, 28 Aug - 02 Sep 2022. Published in: 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) ISBN 9781728194271. doi:10.1109/irmmw-thz50927.2022.9895922
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Official URL: https://doi.org/10.1109/IRMMW-THz50927.2022.989592...
Abstract
The pump-probe delay in optical pump, terahertz probe (OPTP) spectroscopy (time-resolved THz spectroscopy) is typically varied using a mechanical delay stage, which limits the delay range to a few nanoseconds. Here we demonstrate an inexpensive modification to typical OPTP setups that extends the range of pump-probe delays to beyond millisecond timescales, whilst retaining the sub-nanosecond resolution required to resolve faster processes that are often present at early times after pulsed optical excitation. We used this new method to investigate the photoconductance dynamics in a range of materials including IIIV semiconductors, metal halide perovskites, germanium and silicon, whose carrier lifetimes range from a few nanoseconds to milliseconds.
| Item Type: | Conference Item (Paper) | ||||
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering Faculty of Science, Engineering and Medicine > Science > Physics |
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| SWORD Depositor: | Library Publications Router | ||||
| Journal or Publication Title: | 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) | ||||
| Publisher: | IEEE | ||||
| ISBN: | 9781728194271 | ||||
| Official Date: | 26 September 2022 | ||||
| Dates: |
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| DOI: | 10.1109/irmmw-thz50927.2022.9895922 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Reuse Statement (publisher, data, author rights): | ** From Crossref proceedings articles via Jisc Publications Router ** History: ppub 28-08-2022; issued 28-08-2022. | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Conference Paper Type: | Paper | ||||
| Title of Event: | 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) | ||||
| Type of Event: | Conference | ||||
| Location of Event: | Delft, Netherlands | ||||
| Date(s) of Event: | 28 Aug - 02 Sep 2022 |
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