{"id":"https://openalex.org/A5043857201","orcid":null,"observed_orcids":[],"display_name":"Dirk Ehrentraut","raw_author_names":["D Ehrentraut","D. Ehrentraut","Dirk EHRENTRAUT","Dirk Ehrentraut","Ehrentraut Dirk","Ehrentraut, Dirk"],"full_name":"Ehrentraut, Dirk","works_count":97,"cited_by_count":1535,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":22,"i10_index":36},"ids":{"openalex":"https://openalex.org/A5043857201","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I201537933","ror":"https://ror.org/01dq60k83","display_name":"Tohoku University","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]},"years":[2025,2013,2012,2011,2010,2009,2008,2007]},{"institution":{"id":"https://openalex.org/I202391551","ror":"https://ror.org/053avzc18","display_name":"Czech Academy of Sciences","country_code":"CZ","type":"government","lineage":["https://openalex.org/I202391551"]},"years":[2002]},{"institution":{"id":"https://openalex.org/I204743663","ror":"https://ror.org/012bxv356","display_name":"University of Mysore","country_code":"IN","type":"education","lineage":["https://openalex.org/I204743663"]},"years":[2008]},{"institution":{"id":"https://openalex.org/I2801717034","ror":"https://ror.org/00mhg9s35","display_name":"Mitsubishi Gas Chemical (Japan)","country_code":"JP","type":"company","lineage":["https://openalex.org/I1306287861","https://openalex.org/I2801717034"]},"years":[2008]},{"institution":{"id":"https://openalex.org/I35440088","ror":"https://ror.org/05a28rw58","display_name":"ETH Zurich","country_code":"CH","type":"education","lineage":["https://openalex.org/I2799323385","https://openalex.org/I35440088"]},"years":[2004]},{"institution":{"id":"https://openalex.org/I4210104871","ror":"https://ror.org/01d1kv753","display_name":"SPring-8","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4210104871","https://openalex.org/I4210110652","https://openalex.org/I4210111000"]},"years":[2011]},{"institution":{"id":"https://openalex.org/I4210111000","ror":"https://ror.org/01xjv7358","display_name":"Japan Synchrotron Radiation Research Institute","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4210111000"]},"years":[2011,2010]},{"institution":{"id":"https://openalex.org/I4210154060","ror":"https://ror.org/04jfp6348","display_name":"Soraa (United States)","country_code":"US","type":"company","lineage":["https://openalex.org/I4210154060"]},"years":[2017,2015,2014,2013]},{"institution":{"id":"https://openalex.org/I4210156525","ror":"https://ror.org/04m8nb974","display_name":"Spring-8 (Japan)","country_code":"JP","type":"company","lineage":["https://openalex.org/I4210156525"]},"years":[2011]},{"institution":{"id":"https://openalex.org/I4387152242","ror":"https://ror.org/04664mr26","display_name":"Institute for Materials Research, Tohoku University","country_code":"JP","type":"facility","lineage":["https://openalex.org/I201537933","https://openalex.org/I4387152242"]},"years":[2011,2010]},{"institution":{"id":"https://openalex.org/I4405275628","ror":"https://ror.org/040414a53","display_name":"Fukuda Crystal Laboratory (Japan)","country_code":"JP","type":"company","lineage":["https://openalex.org/I4405275628"]},"years":[2010]},{"institution":{"id":"https://openalex.org/I4405286139","ror":"https://ror.org/017qp9z94","display_name":"Institute of Multidisciplinary Research for Advanced Materials, Tohoku University","country_code":"JP","type":"facility","lineage":["https://openalex.org/I201537933","https://openalex.org/I4405286139"]},"years":[2011,2010,2009,2008,2007,2006,2004]},{"institution":{"id":"https://openalex.org/I4405286224","ror":"https://ror.org/01gpt6p30","display_name":"Advanced Institute for Materials Research, Tohoku University","country_code":"JP","type":"facility","lineage":["https://openalex.org/I201537933","https://openalex.org/I4405286224"]},"years":[2025,2013,2012,2011,2010]},{"institution":{"id":"https://openalex.org/I5124864","ror":"https://ror.org/02s376052","display_name":"\u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne","country_code":"CH","type":"education","lineage":["https://openalex.org/I2799323385","https://openalex.org/I5124864"]},"years":[2005,2004,2003,2002,2001]},{"institution":{"id":"https://openalex.org/I858866802","ror":"https://ror.org/037p86664","display_name":"Leibniz Institute for Crystal Growth","country_code":"DE","type":"facility","lineage":["https://openalex.org/I315704651","https://openalex.org/I858866802"]},"years":[2002]},{"institution":{"id":"https://openalex.org/I924388194","ror":"https://ror.org/04hd8bd67","display_name":"Murata (Japan)","country_code":"JP","type":"company","lineage":["https://openalex.org/I924388194"]},"years":[2008]},{"institution":{"id":"https://openalex.org/I96673099","ror":"https://ror.org/04qtj9h94","display_name":"Technical University of Denmark","country_code":"DK","type":"education","lineage":["https://openalex.org/I96673099"]},"years":[2008]},{"institution":{"id":"https://openalex.org/I98285908","ror":"https://ror.org/035t8zc32","display_name":"The University of Osaka","country_code":"JP","type":"education","lineage":["https://openalex.org/I98285908"]},"years":[2010]}],"last_known_institutions":[{"id":"https://openalex.org/I201537933","ror":"https://ror.org/01dq60k83","display_name":"Tohoku University","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]},{"id":"https://openalex.org/I4405286224","ror":"https://ror.org/01gpt6p30","display_name":"Advanced Institute for Materials Research, Tohoku University","country_code":"JP","type":"facility","lineage":["https://openalex.org/I201537933","https://openalex.org/I4405286224"]}],"topics":[{"id":"https://openalex.org/T10099","display_name":"GaN-based semiconductor devices and materials","count":43,"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/T10090","display_name":"ZnO doping and properties","count":32,"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"}},{"id":"https://openalex.org/T10097","display_name":"Luminescence Properties of Advanced Materials","count":23,"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"}},{"id":"https://openalex.org/T10361","display_name":"Silicon Carbide Semiconductor Technologies","count":22,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12529","display_name":"Ga2O3 and related materials","count":21,"subfield":{"id":"https://openalex.org/subfields/2504","display_name":"Electronic, Optical and Magnetic Materials"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"topic_share":[{"id":"https://openalex.org/T12529","display_name":"Ga2O3 and related materials","value":0.0007599,"subfield":{"id":"https://openalex.org/subfields/2504","display_name":"Electronic, Optical and Magnetic Materials"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10099","display_name":"GaN-based semiconductor devices and materials","value":0.0001853,"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/T10090","display_name":"ZnO doping and properties","value":0.0001475,"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"}},{"id":"https://openalex.org/T10361","display_name":"Silicon Carbide Semiconductor Technologies","value":0.0001008,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11127","display_name":"Solid State Laser Technologies","value":8.53e-05,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","score":0.882518470287323},{"id":"185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","score":0.6493523716926575},{"id":"49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","score":0.6243968605995178},{"id":"171250308","wikidata":"https://www.wikidata.org/wiki/Q11468","display_name":"Nanotechnology","score":0.6082750558853149},{"id":"121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","score":0.5231733918190002}],"counts_by_year":[{"year":1996,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2001,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2002,"works_count":7,"oa_works_count":3,"cited_by_count":0},{"year":2003,"works_count":6,"oa_works_count":5,"cited_by_count":0},{"year":2004,"works_count":6,"oa_works_count":5,"cited_by_count":0},{"year":2005,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2006,"works_count":7,"oa_works_count":2,"cited_by_count":0},{"year":2007,"works_count":13,"oa_works_count":0,"cited_by_count":0},{"year":2008,"works_count":12,"oa_works_count":4,"cited_by_count":0},{"year":2009,"works_count":8,"oa_works_count":0,"cited_by_count":0},{"year":2010,"works_count":12,"oa_works_count":0,"cited_by_count":0},{"year":2011,"works_count":8,"oa_works_count":5,"cited_by_count":0},{"year":2012,"works_count":3,"oa_works_count":0,"cited_by_count":99},{"year":2013,"works_count":5,"oa_works_count":3,"cited_by_count":75},{"year":2014,"works_count":4,"oa_works_count":0,"cited_by_count":116},{"year":2015,"works_count":1,"oa_works_count":0,"cited_by_count":91},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":99},{"year":2017,"works_count":1,"oa_works_count":1,"cited_by_count":67},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":89},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":47},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":67},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":80},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":52},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":37},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":47},{"year":2025,"works_count":1,"oa_works_count":0,"cited_by_count":31},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":19}],"display_name_alternatives":["D Ehrentraut","D. Ehrentraut","Dirk EHRENTRAUT","Dirk Ehrentraut","Ehrentraut Dirk","Ehrentraut, Dirk"],"block_key":"d ehrentraut","works_api_url":"https://api.openalex.org/works?filter=author.id:A5043857201","updated_date":"2026-11-04T11:47:51","created_date":"2016-06-24T00:00:00"}