{"doi":"10.1002/pssc.201200314","title":"Photoluminescence of excitons and biexcitons in (C<sub>4</sub>H<sub>9</sub>NH<sub>3</sub>)<sub>2</sub>PbBr<sub>4</sub> crystals under high excitation density","abstract":"<jats:title>Abstract</jats:title><jats:p>Optical properties in (C<jats:sub>4</jats:sub>H<jats:sub>9</jats:sub>NH<jats:sub>3</jats:sub>)<jats:sub>2</jats:sub>PbBr<jats:sub>4</jats:sub> single crystals under high density excitation have been investigated by photoluminescence (PL) spectroscopy. The PL bands associated with the Γ<jats:sub>1</jats:sub>, Γ<jats:sub>2</jats:sub> and Γ<jats:sub>5</jats:sub> excitons and the biexcitons have been observed. While the Γ<jats:sub>2</jats:sub> exciton and biexciton PL intensities are proportional to the 0.9 and 1.7 power of the excitation density, respectively, the Γ<jats:sub>5</jats:sub> exciton PL intensity shows the nonlinear dependence on the excitation density. The excitation‐density dependence of the PL bands is calculated by taking account of the dynamical change of the exciton and biexciton populations in an exciton‐biexciton system consisting of two exciton states and a biexciton state. The calculated results well explain the nonlinear dependence of the Γ<jats:sub>5</jats:sub> exciton PL intensity on the excitation density. (© 2012 WILEY‐VCH Verlag GmbH &amp; Co. KGaA, Weinheim)</jats:p>","journal":"physica status solidi c","year":2012,"id":27377,"datarank":0.7921479525254369,"base_score":2.5649493574615367,"endowment":2.5649493574615367,"self_citation_contribution":0.38474240361923057,"citation_network_contribution":0.4074055489062063,"self_endowment_contribution":0.38474240361923057,"citer_contribution":0.4074055489062063,"corpus_percentile":null,"corpus_rank":null,"citation_count":12,"citer_count":12,"citers_with_citation_signal":11,"citers_with_endowment":11,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":156204,"name":"Goro Oohata","orcid":null,"position":1,"is_corresponding":false},{"id":156205,"name":"Kohji Mizoguchi","orcid":null,"position":2,"is_corresponding":false},{"id":156206,"name":"Hideki Ichida","orcid":null,"position":3,"is_corresponding":false},{"id":156207,"name":"Yasuo Kanematsu","orcid":null,"position":4,"is_corresponding":false},{"id":156203,"name":"Yasuo Yamamoto","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"base_score":2.5649493574615367,"endowment":2.5649493574615367,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"24523987","pmcid":null,"openalex_id":"https://openalex.org/W1918788130","authors":[],"funders":[],"total_grants":0,"fwci":0.151,"citation_percentile":0.45640233,"influential_citations":0,"citation_trend":[{"year":2015,"count":1},{"year":2018,"count":1},{"year":2019,"count":2},{"year":2020,"count":1},{"year":2021,"count":4},{"year":2023,"count":3}],"oa_status":"closed","license":"http://onlinelibrary.wiley.com/termsAndConditions#vor","oa_locations":[{"url":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fpssc.201200314","host_type":"publisher"},{"url":"https://onlinelibrary.wiley.com/doi/pdf/10.1002/pssc.201200314","host_type":"publisher"},{"url":"https://doi.org/10.1002/pssc.201200314","host_type":"journal"}],"fields_of_study":["Solid-state spectroscopy and crystallography","Perovskite Materials and Applications","Spectroscopy and Laser Applications","Chemistry","Physics","Materials Science"],"mesh_terms":[],"keywords":["Biexciton","Exciton","Photoluminescence","Excitation","Atomic physics","Chemistry","Photoluminescence excitation","Spectroscopy","Molecular physics","Condensed matter physics","Materials science","Physics","Optoelectronics"],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-06-08T17:49:24.120075Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}