{"id":"https://openalex.org/W2790955152","doi":"https://doi.org/10.20965/ijat.2018.p0179","title":"Patterned Sapphire Substrates for III-Nitride Epitaxial Growth","display_name":"Patterned Sapphire Substrates for III-Nitride Epitaxial Growth","publication_year":2018,"publication_date":"2018-03-01","ids":{"openalex":"https://openalex.org/W2790955152","doi":"https://doi.org/10.20965/ijat.2018.p0179","mag":"2790955152"},"language":"en","primary_location":{"id":"doi:10.20965/ijat.2018.p0179","is_oa":true,"landing_page_url":"https://doi.org/10.20965/ijat.2018.p0179","pdf_url":null,"source":{"id":"https://openalex.org/S2764525154","display_name":"International Journal of Automation Technology","issn_l":"1881-7629","issn":["1881-7629","1883-8022"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4324309662","host_organization_name":"Fuji Technology Press Ltd.","host_organization_lineage":["https://openalex.org/P4324309662"],"host_organization_lineage_names":["Fuji Technology Press Ltd."],"type":"journal"},"license":"cc-by-nd","license_id":"https://openalex.org/licenses/cc-by-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Automation Technology","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"https://doi.org/10.20965/ijat.2018.p0179","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5014177379","display_name":"Natsuko Omiya","orcid":"https://orcid.org/0009-0005-2629-8540"},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Natsuko Omiya","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5058889471","display_name":"Hideo Aida","orcid":"https://orcid.org/0000-0002-6593-9575"},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Hideo Aida","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5007267898","display_name":"Yutaka Kimura","orcid":"https://orcid.org/0000-0002-9607-0980"},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Yutaka Kimura","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5004272261","display_name":"Yuki Kawamata","orcid":"https://orcid.org/0000-0003-1296-5582"},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Yuki Kawamata","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101807133","display_name":"Seong\u2010Woo Kim","orcid":"https://orcid.org/0000-0003-0372-6379"},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Seong-Woo Kim","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5028757196","display_name":"Michio Uneda","orcid":"https://orcid.org/0000-0002-5621-0109"},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Michio Uneda","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5004272261","https://openalex.org/A5007267898","https://openalex.org/A5014177379","https://openalex.org/A5028757196","https://openalex.org/A5058889471","https://openalex.org/A5101807133"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.04634032,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"12","issue":"2","first_page":"179","last_page":"186"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10099","display_name":"GaN-based semiconductor devices and materials","score":1.0,"subfield":{"id":"https://openalex.org/subfields/3104","display_name":"Condensed Matter Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10099","display_name":"GaN-based semiconductor devices and materials","score":1.0,"subfield":{"id":"https://openalex.org/subfields/3104","display_name":"Condensed Matter Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10022","display_name":"Semiconductor Quantum Structures and Devices","score":0.9980000257492065,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10090","display_name":"ZnO doping and properties","score":0.9930999875068665,"subfield":{"id":"https://openalex.org/subfields/2505","display_name":"Materials Chemistry"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/light-emitting-diode","display_name":"Light-emitting diode","score":0.8946197032928467},{"id":"https://openalex.org/keywords/materials-science","display_name":"Materials science","score":0.7940322160720825},{"id":"https://openalex.org/keywords/sapphire","display_name":"Sapphire","score":0.7676032781600952},{"id":"https://openalex.org/keywords/optoelectronics","display_name":"Optoelectronics","score":0.7532510161399841},{"id":"https://openalex.org/keywords/quantum-efficiency","display_name":"Quantum efficiency","score":0.694778323173523},{"id":"https://openalex.org/keywords/epitaxy","display_name":"Epitaxy","score":0.6187057495117188},{"id":"https://openalex.org/keywords/light-intensity","display_name":"Light intensity","score":0.5803364515304565},{"id":"https://openalex.org/keywords/diode","display_name":"Diode","score":0.5050984025001526},{"id":"https://openalex.org/keywords/nitride","display_name":"Nitride","score":0.4737354516983032},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.3719325065612793},{"id":"https://openalex.org/keywords/laser","display_name":"Laser","score":0.1395985186100006},{"id":"https://openalex.org/keywords/nanotechnology","display_name":"Nanotechnology","score":0.12493041157722473},{"id":"https://openalex.org/keywords/layer","display_name":"Layer (electronics)","score":0.09560829401016235}],"concepts":[{"id":"https://openalex.org/C176666156","wikidata":"https://www.wikidata.org/wiki/Q25504","display_name":"Light-emitting diode","level":2,"score":0.8946197032928467},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.7940322160720825},{"id":"https://openalex.org/C2780064504","wikidata":"https://www.wikidata.org/wiki/Q127583","display_name":"Sapphire","level":3,"score":0.7676032781600952},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.7532510161399841},{"id":"https://openalex.org/C205507967","wikidata":"https://www.wikidata.org/wiki/Q900625","display_name":"Quantum efficiency","level":2,"score":0.694778323173523},{"id":"https://openalex.org/C110738630","wikidata":"https://www.wikidata.org/wiki/Q1135540","display_name":"Epitaxy","level":3,"score":0.6187057495117188},{"id":"https://openalex.org/C3020368824","wikidata":"https://www.wikidata.org/wiki/Q6546192","display_name":"Light intensity","level":2,"score":0.5803364515304565},{"id":"https://openalex.org/C78434282","wikidata":"https://www.wikidata.org/wiki/Q11656","display_name":"Diode","level":2,"score":0.5050984025001526},{"id":"https://openalex.org/C194760766","wikidata":"https://www.wikidata.org/wiki/Q410851","display_name":"Nitride","level":3,"score":0.4737354516983032},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.3719325065612793},{"id":"https://openalex.org/C520434653","wikidata":"https://www.wikidata.org/wiki/Q38867","display_name":"Laser","level":2,"score":0.1395985186100006},{"id":"https://openalex.org/C171250308","wikidata":"https://www.wikidata.org/wiki/Q11468","display_name":"Nanotechnology","level":1,"score":0.12493041157722473},{"id":"https://openalex.org/C2779227376","wikidata":"https://www.wikidata.org/wiki/Q6505497","display_name":"Layer (electronics)","level":2,"score":0.09560829401016235},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.20965/ijat.2018.p0179","is_oa":true,"landing_page_url":"https://doi.org/10.20965/ijat.2018.p0179","pdf_url":null,"source":{"id":"https://openalex.org/S2764525154","display_name":"International Journal of Automation Technology","issn_l":"1881-7629","issn":["1881-7629","1883-8022"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4324309662","host_organization_name":"Fuji Technology Press Ltd.","host_organization_lineage":["https://openalex.org/P4324309662"],"host_organization_lineage_names":["Fuji Technology Press Ltd."],"type":"journal"},"license":"cc-by-nd","license_id":"https://openalex.org/licenses/cc-by-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Automation Technology","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.20965/ijat.2018.p0179","is_oa":true,"landing_page_url":"https://doi.org/10.20965/ijat.2018.p0179","pdf_url":null,"source":{"id":"https://openalex.org/S2764525154","display_name":"International Journal of Automation Technology","issn_l":"1881-7629","issn":["1881-7629","1883-8022"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4324309662","host_organization_name":"Fuji Technology Press Ltd.","host_organization_lineage":["https://openalex.org/P4324309662"],"host_organization_lineage_names":["Fuji Technology Press Ltd."],"type":"journal"},"license":"cc-by-nd","license_id":"https://openalex.org/licenses/cc-by-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Automation Technology","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy","score":0.6800000071525574}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":30,"referenced_works":["https://openalex.org/W1967764736","https://openalex.org/W1975317856","https://openalex.org/W1977861029","https://openalex.org/W1979300756","https://openalex.org/W1981226320","https://openalex.org/W1981332002","https://openalex.org/W1985856875","https://openalex.org/W1988600221","https://openalex.org/W1988935928","https://openalex.org/W1991086157","https://openalex.org/W1995771268","https://openalex.org/W2023475929","https://openalex.org/W2023537533","https://openalex.org/W2032090227","https://openalex.org/W2039994485","https://openalex.org/W2041671015","https://openalex.org/W2043800207","https://openalex.org/W2047427520","https://openalex.org/W2058916920","https://openalex.org/W2068655364","https://openalex.org/W2069099261","https://openalex.org/W2081456112","https://openalex.org/W2081602323","https://openalex.org/W2094745587","https://openalex.org/W2106215542","https://openalex.org/W2106759154","https://openalex.org/W2148945027","https://openalex.org/W2150238422","https://openalex.org/W2165176619","https://openalex.org/W3020181965"],"related_works":["https://openalex.org/W2007005446","https://openalex.org/W2002774257","https://openalex.org/W2321456801","https://openalex.org/W4376273851","https://openalex.org/W2017327039","https://openalex.org/W3196263063","https://openalex.org/W2900817682","https://openalex.org/W2029540939","https://openalex.org/W1995606188","https://openalex.org/W2075133092"],"abstract_inverted_index":{"GaN-based":[0],"light":[1,27,39,60,72,93,103,113,135,159],"emitting":[2,104],"diodes":[3],"(LEDs)":[4],"were":[5],"epitaxially":[6],"grown":[7],"on":[8,63,153],"patterned":[9],"sapphire":[10],"substrates":[11],"(PSSs)":[12],"to":[13,77,91],"investigate":[14],"the":[15,21,32,46,49,53,58,70,80,83,88,92,101,107,111,122,127,131,134,139,143,148,154,157,162,169,175,178],"effectiveness":[16],"of":[17,31,52,87,100,106,130,147,151,161,171],"PSSs":[18,47,140,155],"for":[19],"improving":[20],"internal":[22],"quantum":[23],"efficiency":[24,29],"(IQE)":[25],"and":[26,38,56,110,156],"extraction":[28],"(LEE)":[30],"LEDs.":[33],"Using":[34],"X-ray":[35],"diffraction":[36],"(XRD)":[37],"output":[40,160],"measurements,":[41],"it":[42,118],"was":[43,95,119],"observed":[44],"that":[45,121,138,165],"improved":[48],"crystal":[50],"quality":[51],"LED":[54,59,108],"films":[55],"enhanced":[57,71],"intensity.":[61],"Based":[62],"these":[64],"experimental":[65],"results,":[66],"we":[67],"discuss":[68],"whether":[69],"intensity":[73,94],"can":[74],"be":[75],"attributed":[76],"improvements":[78],"in":[79,133,168,177],"IQE":[81,89,123],"or":[82],"LEE.":[84,144,179],"The":[85],"contribution":[86],"improvement":[90,124,176],"estimated":[96],"through":[97],"a":[98,116],"comparison":[99,146],"calculated":[102,149],"area":[105],"chip":[109],"measured":[112,158],"output.":[114],"As":[115],"result,":[117],"revealed":[120],"is":[125],"not":[126],"main":[128],"cause":[129],"increase":[132,167],"intensity,":[136],"indicating":[137],"mainly":[141],"improve":[142],"A":[145],"number":[150,170],"bumps":[152,172],"LEDs":[163],"suggests":[164],"an":[166],"could":[173],"affect":[174]},"counts_by_year":[],"updated_date":"2026-07-31T08:31:51.225901","created_date":"2025-10-10T00:00:00"}