{"id":"https://openalex.org/W787405908","doi":"https://doi.org/10.12693/aphyspola.92.737","title":"Some Optical and Epr Properties of Strain-Free GaN Crystals Obtained by Ammono Method","display_name":"Some Optical and Epr Properties of Strain-Free GaN Crystals Obtained by Ammono Method","publication_year":1997,"publication_date":"1997-10-01","ids":{"openalex":"https://openalex.org/W787405908","doi":"https://doi.org/10.12693/aphyspola.92.737","mag":"787405908"},"language":"en","primary_location":{"id":"doi:10.12693/aphyspola.92.737","doi":"https://doi.org/10.12693/aphyspola.92.737","is_oa":true,"landing_page_url":"https://doi.org/10.12693/aphyspola.92.737","pdf_url":"https://doi.org/10.12693/aphyspola.92.737","source":{"id":"https://openalex.org/S63733671","display_name":"Acta Physica Polonica A","issn_l":"0587-4246","issn":["0587-4246","1898-794X"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","ddh","doaj","dongbi-c","jufo-1","norway-1","poland-70","russia-white-list-3","vabb-shw"],"host_organization":"https://openalex.org/P4310317485","host_organization_name":"Polish Academy of Sciences","host_organization_lineage":["https://openalex.org/P4310317485"],"host_organization_lineage_names":["Polish Academy of Sciences"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Acta Physica Polonica A","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"https://doi.org/10.12693/aphyspola.92.737","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":null,"display_name":"R. Dwili\u0144ski","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4654613","display_name":"University of Warsaw","ror":"https://ror.org/039bjqg32","country_code":"PL","type":"education","lineage":["https://openalex.org/I4654613"]}],"countries":["PL"],"is_corresponding":false,"raw_author_name":"R. Dwili\u0144ski","raw_affiliation_strings":["Institute of Experimental Physics, Warsaw University, Ho\u017ca 69, 00-681 Warsaw, Poland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Experimental Physics, Warsaw University, Ho\u017ca 69, 00-681 Warsaw, Poland","institution_ids":["https://openalex.org/I4654613"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5033608517","display_name":"J. M. Baranowski","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4654613","display_name":"University of Warsaw","ror":"https://ror.org/039bjqg32","country_code":"PL","type":"education","lineage":["https://openalex.org/I4654613"]}],"countries":["PL"],"is_corresponding":false,"raw_author_name":"J.M. Baranowski","raw_affiliation_strings":["Institute of Experimental Physics, Warsaw University, Ho\u017ca 69, 00-681 Warsaw, Poland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Experimental Physics, Warsaw University, Ho\u017ca 69, 00-681 Warsaw, Poland","institution_ids":["https://openalex.org/I4654613"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5033716559","display_name":"M. Kami\u0144ska","orcid":"https://orcid.org/0000-0003-1639-1862","observed_orcids":["https://orcid.org/0000-0003-1639-1862"]},"institutions":[{"id":"https://openalex.org/I4654613","display_name":"University of Warsaw","ror":"https://ror.org/039bjqg32","country_code":"PL","type":"education","lineage":["https://openalex.org/I4654613"]}],"countries":["PL"],"is_corresponding":false,"raw_author_name":"M. Kami\u0144ska","raw_affiliation_strings":["Institute of Experimental Physics, Warsaw University, Ho\u017ca 69, 00-681 Warsaw, Poland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Experimental Physics, Warsaw University, Ho\u017ca 69, 00-681 Warsaw, Poland","institution_ids":["https://openalex.org/I4654613"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5111818163","display_name":"Roman Doradzi\u0144ski","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4654613","display_name":"University of Warsaw","ror":"https://ror.org/039bjqg32","country_code":"PL","type":"education","lineage":["https://openalex.org/I4654613"]}],"countries":["PL"],"is_corresponding":false,"raw_author_name":"R. Doradzi\u0144ski","raw_affiliation_strings":["Institute of Theoretical Physics, Warsaw University, Ho\u017ca 69, 00-681 Warsaw, Poland","Institute of Theoretical Physics, Warsaw University, #N#Hoza 69, 00-681 Warsaw, Poland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Theoretical Physics, Warsaw University, Ho\u017ca 69, 00-681 Warsaw, Poland","institution_ids":["https://openalex.org/I4654613"]},{"raw_affiliation_string":"Institute of Theoretical Physics, Warsaw University, #N#Hoza 69, 00-681 Warsaw, Poland","institution_ids":["https://openalex.org/I4654613"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5039766234","display_name":"Jerzy Garczy\u0144ski","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I108403487","display_name":"Warsaw University of Technology","ror":"https://ror.org/00y0xnp53","country_code":"PL","type":"education","lineage":["https://openalex.org/I108403487"]}],"countries":["PL"],"is_corresponding":false,"raw_author_name":"J. Garczy\u0144ski","raw_affiliation_strings":["Dept. of Chemistry, Warsaw Univ. of Technology, Noakowskiego 4, 00-661 Warsaw, Poland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dept. of Chemistry, Warsaw Univ. of Technology, Noakowskiego 4, 00-661 Warsaw, Poland","institution_ids":["https://openalex.org/I108403487"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5077008454","display_name":"Leszek Sierzputowski","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I108403487","display_name":"Warsaw University of Technology","ror":"https://ror.org/00y0xnp53","country_code":"PL","type":"education","lineage":["https://openalex.org/I108403487"]}],"countries":["PL"],"is_corresponding":false,"raw_author_name":"L. Sierzputowski","raw_affiliation_strings":["Dept. of Chemistry, Warsaw Univ. of Technology, Noakowskiego 4, 00-661 Warsaw, Poland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dept. of Chemistry, Warsaw Univ. of Technology, Noakowskiego 4, 00-661 Warsaw, Poland","institution_ids":["https://openalex.org/I108403487"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5060108822","display_name":"Maria Palczewska","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210142131","display_name":"Institute of Electronic Materials Technology","ror":"https://ror.org/03jp3w522","country_code":"PL","type":"facility","lineage":["https://openalex.org/I4210129336","https://openalex.org/I4210142131","https://openalex.org/I4405259767"]}],"countries":["PL"],"is_corresponding":false,"raw_author_name":"M. Palczewska","raw_affiliation_strings":["Institute of Electronic Materials Technology, W\u00f3lczy\u0144ska 133, 01-919 Warsaw, Poland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Electronic Materials Technology, W\u00f3lczy\u0144ska 133, 01-919 Warsaw, Poland","institution_ids":["https://openalex.org/I4210142131"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":{"value":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"92","issue":"4","first_page":"737","last_page":"741"},"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":0.0,"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/T10097","display_name":"Luminescence Properties of Advanced Materials","score":0.0,"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/gan","display_name":"GaN","score":0.652999997138977},{"id":"https://openalex.org/keywords/photoluminescence","display_name":"photoluminescence","score":0.9679999947547913},{"id":"https://openalex.org/keywords/excitons","display_name":"excitons","score":0.8690000176429749},{"id":"https://openalex.org/keywords/bound-excitons","display_name":"bound excitons","score":0.7229999899864197},{"id":"https://openalex.org/keywords/acceptor-bound-excitons","display_name":"acceptor-bound excitons","score":0.7879999876022339},{"id":"https://openalex.org/keywords/free-electron-concentration","display_name":"free electron concentration","score":0.7239999771118164},{"id":"https://openalex.org/keywords/shallow-donors","display_name":"shallow donors","score":0.7770000100135803},{"id":"https://openalex.org/keywords/epr","display_name":"EPR","score":0.6639999747276306},{"id":"https://openalex.org/keywords/model-materials","display_name":"model materials","score":0.3630000054836273}],"concepts":[{"id":"https://openalex.org/C187961010","wikidata":"https://www.wikidata.org/wiki/Q260463","display_name":"Electron paramagnetic resonance","level":2,"score":0.7943620681762695},{"id":"https://openalex.org/C2778022156","wikidata":"https://www.wikidata.org/wiki/Q576145","display_name":"Strain (injury)","level":2,"score":0.7102272510528564},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.6659044623374939},{"id":"https://openalex.org/C26873012","wikidata":"https://www.wikidata.org/wiki/Q214781","display_name":"Condensed matter physics","level":1,"score":0.421329528093338},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.21378901600837708},{"id":"https://openalex.org/C46141821","wikidata":"https://www.wikidata.org/wiki/Q209402","display_name":"Nuclear magnetic resonance","level":1,"score":0.19573742151260376},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.03565013408660889},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.12693/aphyspola.92.737","doi":"https://doi.org/10.12693/aphyspola.92.737","is_oa":true,"landing_page_url":"https://doi.org/10.12693/aphyspola.92.737","pdf_url":"https://doi.org/10.12693/aphyspola.92.737","source":{"id":"https://openalex.org/S63733671","display_name":"Acta Physica Polonica A","issn_l":"0587-4246","issn":["0587-4246","1898-794X"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","ddh","doaj","dongbi-c","jufo-1","norway-1","poland-70","russia-white-list-3","vabb-shw"],"host_organization":"https://openalex.org/P4310317485","host_organization_name":"Polish Academy of Sciences","host_organization_lineage":["https://openalex.org/P4310317485"],"host_organization_lineage_names":["Polish Academy of Sciences"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Acta Physica Polonica A","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.12693/aphyspola.92.737","doi":"https://doi.org/10.12693/aphyspola.92.737","is_oa":true,"landing_page_url":"https://doi.org/10.12693/aphyspola.92.737","pdf_url":"https://doi.org/10.12693/aphyspola.92.737","source":{"id":"https://openalex.org/S63733671","display_name":"Acta Physica Polonica A","issn_l":"0587-4246","issn":["0587-4246","1898-794X"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","ddh","doaj","dongbi-c","jufo-1","norway-1","poland-70","russia-white-list-3","vabb-shw"],"host_organization":"https://openalex.org/P4310317485","host_organization_name":"Polish Academy of Sciences","host_organization_lineage":["https://openalex.org/P4310317485"],"host_organization_lineage_names":["Polish Academy of Sciences"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Acta Physica Polonica A","raw_type":"journal-article"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W787405908.pdf","grobid_xml":"https://content.openalex.org/works/W787405908.grobid-xml"},"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W1985508661","https://openalex.org/W2042357599","https://openalex.org/W2088160950","https://openalex.org/W2093346363","https://openalex.org/W3127367313","https://openalex.org/W2587312618","https://openalex.org/W1966739183","https://openalex.org/W2018583261","https://openalex.org/W1965323652","https://openalex.org/W1771684173"],"abstract_inverted_index":{"AMMONO":[0],"GaN":[1,73,85,133],"is":[2,57,86],"grown":[3],"spontaneously":[4],"from":[5,97],"ammonia":[6],"solution":[7],"in":[8,58,79],"form":[9],"of":[10,18,26,54,63,76,83,100,110,120,125],"regular,":[11],"well":[12],"shaped,":[13],"few":[14,89],"micrometer":[15],"crystals.Photoluminescence":[16],"spectra":[17],"these":[19,106],"crystals":[20,107,134],"are":[21,51,135],"characterized":[22],"by":[23],"fixed":[24],"positions":[25],"very":[27],"narrow":[28],"exciton":[29,50,55],"lines":[30,56],"(FWHM":[31],"down":[32],"to":[33,60],"1":[34],"meV),":[35],"where":[36],"free":[37],"excitons":[38,46],"A,":[39],"B,":[40],"C,":[41],"resolved":[42],"two":[43],"donor":[44],"bound":[45,49],"and":[47,127,137],"acceptor":[48],"visible.Fixed":[52],"position":[53],"contrast":[59],"small":[61],"changes":[62],"line":[64],"energies":[65],"which":[66],"have":[67],"been":[68],"always":[69],"observed":[70],"for":[71,116],"epitaxial":[72],"1ayers":[74],"because":[75],"strain":[77],"present":[78],"them.Free":[80],"electron":[81],"concentration":[82],"\u0391\u039c\u039cO\u039dO":[84,132],"less":[87],"than":[88],"times":[90],"101":[91],"5":[92],"cm-3":[93],",":[94],"as":[95,108],"estimated":[96],"EPR":[98,128],"signal":[99],"shallow":[101],"donor.The":[102],"above-mentioned":[103],"facts":[104],"qualified":[105],"state":[109],"the":[111],"art":[112],"strain-free,":[113],"model":[114],"material":[115],"basic":[117],"parameter":[118],"measurements":[119,129],"GaN.In":[121],"this":[122],"work,":[123],"results":[124],"PL":[126],"performed":[130],"on":[131],"presented":[136],"discussed..":[138]},"counts_by_year":[],"updated_date":"2026-10-12T09:40:04.860316","created_date":"2016-06-24T00:00:00"}
