{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T00:50:25Z","timestamp":1760143825094,"version":"build-2065373602"},"reference-count":21,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2024,2,21]],"date-time":"2024-02-21T00:00:00Z","timestamp":1708473600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program of China","doi-asserted-by":"publisher","award":["2023YFF0719600","12375188","11835008","XDCX2019B079"],"award-info":[{"award-number":["2023YFF0719600","12375188","11835008","XDCX2019B079"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"name":"General Program of the National Natural Science Foundation of China","award":["2023YFF0719600","12375188","11835008","XDCX2019B079"],"award-info":[{"award-number":["2023YFF0719600","12375188","11835008","XDCX2019B079"]}]},{"name":"Key Project of National Natural Science Foundation of China","award":["2023YFF0719600","12375188","11835008","XDCX2019B079"],"award-info":[{"award-number":["2023YFF0719600","12375188","11835008","XDCX2019B079"]}]},{"name":"Postgraduate Scientific Research Innovation Project of Xiangtan University","award":["2023YFF0719600","12375188","11835008","XDCX2019B079"],"award-info":[{"award-number":["2023YFF0719600","12375188","11835008","XDCX2019B079"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this study, a controllable equal-gap large-area silicon drift detector (L-SDD) is designed. The surface leakage current is reduced by reducing the SiO2-Si interface through the new controllable equal-gap design. The design of the equal gap also solves the problem whereby the gap widens due to the larger detector size in the previous SDD design, which leads to a large invalid area of the detector. In this paper, a spiral hexagonal equal-gap L-SDD of 1 cm radius is selected for design calculation, and we implement 3D modeling and simulation of the device. The simulation results show that the internal potential gradient distribution of the L-SDD is uniform and forms a drift electric field, with the direction of electron drift pointing towards the collecting anode. The L-SDD has an excellent electron drift channel inside, and this article also analyzes the electrical performance of the drift channel to verify the correctness of the design method of the L-SDD.<\/jats:p>","DOI":"10.3390\/s24051388","type":"journal-article","created":{"date-parts":[[2024,2,21]],"date-time":"2024-02-21T10:52:00Z","timestamp":1708512720000},"page":"1388","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Design and 3D Electrical Simulations for a Controllable Equal-Gap Large-Area Silicon Drift Detector"],"prefix":"10.3390","volume":"24","author":[{"given":"Jun","family":"Zhao","sequence":"first","affiliation":[{"name":"School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China"}]},{"given":"Tao","family":"Long","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China"}]},{"given":"Mingyang","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7654-8548","authenticated-orcid":false,"given":"Manwen","family":"Liu","sequence":"additional","affiliation":[{"name":"Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China"}]},{"given":"Minghua","family":"Tang","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China"}]},{"given":"Zheng","family":"Li","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China"},{"name":"College of Physics and Optoelectronic Engineering, Ludong University, Yantai 264025, China"},{"name":"School for Optoelectronic Engineering, Zaozhuang University, Zaozhuang 277160, China"}]}],"member":"1968","published-online":{"date-parts":[[2024,2,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"119872","DOI":"10.1016\/j.jenvman.2023.119872","article-title":"Development of alginate beads for precise environmental release applications: A design of experiment based approach and analysis","volume":"351","author":"Fernando","year":"2024","journal-title":"J. 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