{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,7]],"date-time":"2025-11-07T19:18:51Z","timestamp":1762543131784,"version":"build-2065373602"},"reference-count":44,"publisher":"MDPI AG","issue":"20","license":[{"start":{"date-parts":[[2019,10,11]],"date-time":"2019-10-11T00:00:00Z","timestamp":1570752000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004543","name":"China Scholarship Council","doi-asserted-by":"publisher","award":["Bo Zhou"],"award-info":[{"award-number":["Bo Zhou"]}],"id":[{"id":"10.13039\/501100004543","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100010661","name":"Horizon 2020 Framework Programme","doi-asserted-by":"publisher","award":["H2020-MSCA-IF-2016-745820"],"award-info":[{"award-number":["H2020-MSCA-IF-2016-745820"]}],"id":[{"id":"10.13039\/100010661","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000266","name":"Engineering and Physical Sciences Research Council","doi-asserted-by":"publisher","award":["EP\/R035571\/1"],"award-info":[{"award-number":["EP\/R035571\/1"]}],"id":[{"id":"10.13039\/501100000266","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>AC photoelectrochemical imaging at electrolyte\u2013semiconductor interfaces provides spatially resolved information such as surface potentials, ion concentrations and electrical impedance. In this work, thin films of InGaN\/GaN were used successfully for AC photoelectrochemical imaging, and experimentally shown to generate a considerable photocurrent under illumination with a 405 nm modulated diode laser at comparatively high frequencies and low applied DC potentials, making this a promising substrate for bioimaging applications. Linear sweep voltammetry showed negligible dark currents. The imaging capabilities of the sensor substrate were demonstrated with a model system and showed a lateral resolution of 7 microns.<\/jats:p>","DOI":"10.3390\/s19204386","type":"journal-article","created":{"date-parts":[[2019,10,11]],"date-time":"2019-10-11T10:53:03Z","timestamp":1570791183000},"page":"4386","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["InGaN as a Substrate for AC Photoelectrochemical Imaging"],"prefix":"10.3390","volume":"19","author":[{"given":"Bo","family":"Zhou","sequence":"first","affiliation":[{"name":"School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, UK"}]},{"given":"Anirban","family":"Das","sequence":"additional","affiliation":[{"name":"School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, UK"}]},{"given":"Menno J.","family":"Kappers","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, UK"}]},{"given":"Rachel A.","family":"Oliver","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, UK"}]},{"given":"Colin J.","family":"Humphreys","sequence":"additional","affiliation":[{"name":"School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, UK"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8532-4244","authenticated-orcid":false,"given":"Steffi","family":"Krause","sequence":"additional","affiliation":[{"name":"School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, UK"}]}],"member":"1968","published-online":{"date-parts":[[2019,10,11]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1182","DOI":"10.1126\/science.3375810","article-title":"Light-addressable potentiometric sensor for biochemical systems","volume":"240","author":"Hafeman","year":"1988","journal-title":"Science"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"136","DOI":"10.1016\/S0925-4005(01)00906-6","article-title":"Ion-selective light-addressable potentiometric sensor (LAPS) with chalcogenide thin film prepared by pulsed laser deposition","volume":"80","author":"Mourzina","year":"2001","journal-title":"Sens. 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