{"id":"https://openalex.org/W4297934140","doi":null,"title":"Seasonal variation of PV efficiency for various technologies and module inclinations","display_name":"Seasonal variation of PV efficiency for various technologies and module inclinations","publication_year":2009,"publication_date":"2009-01-01","ids":{"openalex":"https://openalex.org/W4297934140"},"language":"en","primary_location":{"id":"pmh:oai:HAL:hal-00541216v1","doi":null,"is_oa":false,"landing_page_url":"https://hal.science/hal-00541216","pdf_url":null,"source":{"id":"https://openalex.org/S4306402512","display_name":"HAL","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4405252976","host_organization_name":"Centre pour la Communication Scientifique Directe","host_organization_lineage":["https://openalex.org/I4405252976"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Ecological Engineering and Environmental Protection- Special Issue 'Renewable Energy sources, 2009, 1, pp.25-32","raw_type":"info:eu-repo/semantics/article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5011898907","display_name":"Gilles Notton","orcid":"https://orcid.org/0000-0002-6267-9632","observed_orcids":["https://orcid.org/0000-0002-6267-9632"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Notton, Gilles","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5112603789","display_name":"Vladimir Lazarov","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I31151848","display_name":"Technical University of Sofia","ror":"https://ror.org/052prhs50","country_code":"BG","type":"education","lineage":["https://openalex.org/I31151848"]}],"countries":["BG"],"is_corresponding":false,"raw_author_name":"Lazarov, Vladimir","raw_affiliation_strings":["Universit\u00e9 Technique de Sofia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Universit\u00e9 Technique de Sofia","institution_ids":["https://openalex.org/I31151848"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5043829322","display_name":"Ludmil Stoyanov","orcid":"https://orcid.org/0000-0002-3196-0843","observed_orcids":["https://orcid.org/0000-0002-3196-0843"]},"institutions":[{"id":"https://openalex.org/I31151848","display_name":"Technical University of Sofia","ror":"https://ror.org/052prhs50","country_code":"BG","type":"education","lineage":["https://openalex.org/I31151848"]}],"countries":["BG"],"is_corresponding":false,"raw_author_name":"Stoyanov, Ludmil","raw_affiliation_strings":["Universit\u00e9 Technique de Sofia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Universit\u00e9 Technique de Sofia","institution_ids":["https://openalex.org/I31151848"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5027839166","display_name":"Said Diaf","orcid":"https://orcid.org/0000-0003-4801-130X","observed_orcids":["https://orcid.org/0000-0003-4801-130X"]},"institutions":[{"id":"https://openalex.org/I4210116835","display_name":"Renewable Energy Development Center","ror":"https://ror.org/02eeqxc82","country_code":"DZ","type":"facility","lineage":["https://openalex.org/I4210116835"]}],"countries":["DZ"],"is_corresponding":false,"raw_author_name":"Diaf, Said","raw_affiliation_strings":["Centre de D\u00e9veloppement des Energies Renouvelables"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Centre de D\u00e9veloppement des Energies Renouvelables","institution_ids":["https://openalex.org/I4210116835"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5036539102","display_name":"Nicolas H\u00e9raud","orcid":"https://orcid.org/0000-0002-1917-943X","observed_orcids":["https://orcid.org/0000-0002-1917-943X"]},"institutions":[{"id":"https://openalex.org/I4387152350","display_name":"Sciences pour l'Environnement","ror":"https://ror.org/016nwev19","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I138816502","https://openalex.org/I4387152350"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Heraud, Nicolas","raw_affiliation_strings":["Sciences pour l'environnement"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Sciences pour l'environnement","institution_ids":["https://openalex.org/I4387152350"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.3465,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.68220838,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"1","issue":null,"first_page":"25","last_page":"32"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11276","display_name":"Solar Radiation and Photovoltaics","score":0.5640000104904175,"subfield":{"id":"https://openalex.org/subfields/2105","display_name":"Renewable Energy, Sustainability and the Environment"},"field":{"id":"https://openalex.org/fields/21","display_name":"Energy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11276","display_name":"Solar Radiation and Photovoltaics","score":0.5640000104904175,"subfield":{"id":"https://openalex.org/subfields/2105","display_name":"Renewable Energy, Sustainability and the Environment"},"field":{"id":"https://openalex.org/fields/21","display_name":"Energy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10905","display_name":"Solar Thermal and Photovoltaic Systems","score":0.22179999947547913,"subfield":{"id":"https://openalex.org/subfields/2105","display_name":"Renewable Energy, Sustainability and the Environment"},"field":{"id":"https://openalex.org/fields/21","display_name":"Energy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10468","display_name":"Photovoltaic System Optimization Techniques","score":0.19509999454021454,"subfield":{"id":"https://openalex.org/subfields/2105","display_name":"Renewable Energy, Sustainability and the Environment"},"field":{"id":"https://openalex.org/fields/21","display_name":"Energy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/solar-cell-efficiency","display_name":"solar cell efficiency","score":0.9470000267028809},{"id":"https://openalex.org/keywords/seasonal-variation","display_name":"seasonal variation","score":0.9959999918937683},{"id":"https://openalex.org/keywords/photovoltaics","display_name":"photovoltaics","score":0.7699999809265137},{"id":"https://openalex.org/keywords/solar-irradiance","display_name":"solar irradiance","score":0.5960000157356262},{"id":"https://openalex.org/keywords/tilt-angle","display_name":"tilt angle","score":0.5070000290870667}],"concepts":[{"id":"https://openalex.org/C2778334786","wikidata":"https://www.wikidata.org/wiki/Q1586270","display_name":"Variation (astronomy)","level":2,"score":0.7574339509010315},{"id":"https://openalex.org/C125403950","wikidata":"https://www.wikidata.org/wiki/Q2111082","display_name":"Seasonality","level":2,"score":0.4947151839733124},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.47961127758026123},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.34728068113327026},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.22857090830802917},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.22311708331108093},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.077241450548172},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.05367434024810791}],"mesh":[],"locations_count":1,"locations":[{"id":"pmh:oai:HAL:hal-00541216v1","doi":null,"is_oa":false,"landing_page_url":"https://hal.science/hal-00541216","pdf_url":null,"source":{"id":"https://openalex.org/S4306402512","display_name":"HAL","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4405252976","host_organization_name":"Centre pour la Communication Scientifique Directe","host_organization_lineage":["https://openalex.org/I4405252976"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Ecological Engineering and Environmental Protection- Special Issue 'Renewable Energy sources, 2009, 1, pp.25-32","raw_type":"info:eu-repo/semantics/article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Affordable and clean energy","id":"https://metadata.un.org/sdg/7","score":0.878000020980835},{"display_name":"Climate action","id":"https://metadata.un.org/sdg/13","score":0.5351999998092651}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W4246231535","https://openalex.org/W4394974882","https://openalex.org/W6947880187","https://openalex.org/W7214149594","https://openalex.org/W2897509937","https://openalex.org/W6885047501","https://openalex.org/W7098959685","https://openalex.org/W3193000084","https://openalex.org/W3091034237","https://openalex.org/W3045881637"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-11-08T12:12:28.789561","created_date":"2022-10-01T00:00:00"}