{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/129165"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/129165","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Ultraviolet triggering and characterization of diamond photoconductive semiconductor switches for advanced high-power, high-speed applications","abstract":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms","abstract_html":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms","abstract_has_math":false,"creators":["Mazumder, Anik"],"institution":"University of Illinois Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Electrical & Computer Engr","degree_department":null,"school":null,"contributors":["Eden, James Gary"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2025,"date_issued":"2025-05-05","date_published":"2025-05-05","updated_at":"2026-07-22T22:25:04Z","subjects":["PCSS","Diamond","Ultra-wide Bandgap","Intrinsic","Microplasma Lamps","DUV, VUV","Responsivity","etc."],"languages":["eng","en"],"rights":["Copyright 2025 Anik Mazumder"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/129165","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Eden, James Gary"]},{"key":"dc:creator","label":"Author","values":["Mazumder, Anik"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2025-05-05","2025-05"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical & Computer Engr"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["PCSS","Diamond","Ultra-wide Bandgap","Intrinsic","Microplasma Lamps","DUV, VUV","Responsivity","etc."]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng","en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2025 Anik Mazumder"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/129165"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms","The student, Anik Mazumder, accepted the attached license on 2025-05-04 at 15:22.","The student, Anik Mazumder, submitted this Thesis for approval on 2025-05-04 at 16:13.","This Thesis was approved for publication on 2025-05-05 at 12:58.","DSpace SAF Submission Ingestion Package generated from Vireo submission #21634 on 2025-10-19 at 18:08:41","Diamond photoconductive semiconductor switches (PCSS) are becoming very popular because of their high critical electric field strength, superior thermal conductivity, and fast switching speed. In this work, the performance of intrinsic lateral diamond PCSS devices is investigated, with a focus on developing both coherent and incoherent optical triggering, and also correlating device characteristics with background impurity concentrations. The switches are first triggered using ultraviolet (UV) laser excitation in the 212-240 nm range, covering both the near- and above-bandgap photon energies. The laser optical triggering system is optimized for a spatially uniform beam over the devices’ active area without significant energy attenuation and ensuring wide-range pulse energy tuning. For space- and cost-effectiveness, the devices are also tested with different microplasma UV lamps instead of the laser. Although the lamp-triggered photocurrent is three orders of magnitude lower than that of the laser-triggering, this paves the path for compact high-voltage packaging and triggering of PCSS for commercial applications. The device endurance for high-power applications is investigated at applied DC biases between –1.2 kV and +1.2 kV. All devices exhibit fast rise times under 3 ns, limited primarily by the rise time of the excitation laser. The fall time varies with the impurity concentration, and the carrier lifetime decreases with higher impurity concentrations, leading to fast device turn-off. Among the tested lateral devices, the switch fabricated on the substrate with the lowest impurity concentration demonstrates the best performance in terms of the peak photocurrent, responsivity, and on/off ratio. Nevertheless, a trade-off emerges where higher levels of natural impurities facilitate faster fall times but compromise current output."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Ultraviolet triggering and characterization of diamond photoconductive semiconductor switches for advanced high-power, high-speed applications"]}]}],"canonical_facts":{"dc:contributor":["Eden, James Gary"],"dc:creator":["Mazumder, Anik"],"dc:date":["2025-05-05","2025-05"],"dc:description":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms","The student, Anik Mazumder, accepted the attached license on 2025-05-04 at 15:22.","The student, Anik Mazumder, submitted this Thesis for approval on 2025-05-04 at 16:13.","This Thesis was approved for publication on 2025-05-05 at 12:58.","DSpace SAF Submission Ingestion Package generated from Vireo submission #21634 on 2025-10-19 at 18:08:41","Diamond photoconductive semiconductor switches (PCSS) are becoming very popular because of their high critical electric field strength, superior thermal conductivity, and fast switching speed. In this work, the performance of intrinsic lateral diamond PCSS devices is investigated, with a focus on developing both coherent and incoherent optical triggering, and also correlating device characteristics with background impurity concentrations. The switches are first triggered using ultraviolet (UV) laser excitation in the 212-240 nm range, covering both the near- and above-bandgap photon energies. The laser optical triggering system is optimized for a spatially uniform beam over the devices’ active area without significant energy attenuation and ensuring wide-range pulse energy tuning. For space- and cost-effectiveness, the devices are also tested with different microplasma UV lamps instead of the laser. Although the lamp-triggered photocurrent is three orders of magnitude lower than that of the laser-triggering, this paves the path for compact high-voltage packaging and triggering of PCSS for commercial applications. The device endurance for high-power applications is investigated at applied DC biases between –1.2 kV and +1.2 kV. All devices exhibit fast rise times under 3 ns, limited primarily by the rise time of the excitation laser. The fall time varies with the impurity concentration, and the carrier lifetime decreases with higher impurity concentrations, leading to fast device turn-off. Among the tested lateral devices, the switch fabricated on the substrate with the lowest impurity concentration demonstrates the best performance in terms of the peak photocurrent, responsivity, and on/off ratio. Nevertheless, a trade-off emerges where higher levels of natural impurities facilitate faster fall times but compromise current output."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/129165"],"dc:language":["eng","en"],"dc:rights":["Copyright 2025 Anik Mazumder"],"dc:subject":["PCSS","Diamond","Ultra-wide Bandgap","Intrinsic","Microplasma Lamps","DUV, VUV","Responsivity","etc."],"dc:title":["Ultraviolet triggering and characterization of diamond photoconductive semiconductor switches for advanced high-power, high-speed applications"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Electrical & Computer Engr"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:04Z"}