{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Qing J"],"funding":["Vetenskapsrådet","Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linköping University","National Supercomputing Centre (NSCC)","Nanyang Technological University","China Postdoctoral Science Foundation","NSFC Project","Swedish Research Council","National Research Foundation (NRF)","Ministry of Education","Fundamental Research Funds for the Central Universities","European Research Council","Science and Technology Planning Project of Guangzhou","Key Projects of Joint Fund of Basic and Applied Basic Research Fund of Guangdong Province","Swedish Foundation for International Cooperation in Research and Higher Education","Guangzhou Key laboratory of Vacuum Coating Technologies and New Energy Materials Open Projects Fund"],"pagination":["e2104381"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC11468992"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["33(49)"],"pubmed_abstract":["Perovskite light-emitting diodes (PeLEDs) have recently shown significant progress with external quantum efficiencies (EQEs) exceeding 20%. However, PeLEDs with pure-red (620-660 nm) light emission, an essential part for full-color displays, remain a great challenge. Herein, a general approach of spacer cation alloying is employed in Ruddlesden-Popper perovskites (RPPs) for efficient red PeLEDs with precisely tunable wavelengths. By simply tuning the alloying ratio of dual spacer cations, the thickness distribution of quantum wells in the RPP films can be precisely modulated without deteriorating their charge-transport ability and energy funneling processes. Consequently, efficient PeLEDs with tunable emissions between pure red (626 nm) and deep red (671 nm) are achieved with peak EQEs up to 11.5%, representing the highest values among RPP-based pure-red PeLEDs. This work opens a new route for color tuning, which will spur future developments of pure-red or even pure-blue PeLEDs with high performance."],"journal":["Advanced materials (Deerfield Beach, Fla.)"],"pubmed_title":["Spacer Cation Alloying in Ruddlesden-Popper Perovskites for Efficient Red Light-Emitting Diodes with Precisely Tunable Wavelengths."],"pmcid":["PMC11468992"],"funding_grant_id":["2009-00971","MOE2019‐T2‐1‐006","2018-07109","2020A1414010036","2018–07109","2020M673055","M4080514","MOE‐T2EP50120‐0004","MOE-T2EP50120-0004","KFVE20200006","21621008","CH2018-7736","CH2018‐7736","201605030008","717026","MOE2019-T2-1-006","2019B090921002","NRF-NRFI2018-04","2019B1515120073","61774077"],"pubmed_authors":["Hou L","Sum TC","Chen Z","Liu XK","Xu Q","Qing J","Wang H","Ramesh S","Gao F","Yuan Z"],"additional_accession":[]},"is_claimable":false,"name":"Spacer Cation Alloying in Ruddlesden-Popper Perovskites for Efficient Red Light-Emitting Diodes with Precisely Tunable Wavelengths.","description":"Perovskite light-emitting diodes (PeLEDs) have recently shown significant progress with external quantum efficiencies (EQEs) exceeding 20%. However, PeLEDs with pure-red (620-660 nm) light emission, an essential part for full-color displays, remain a great challenge. Herein, a general approach of spacer cation alloying is employed in Ruddlesden-Popper perovskites (RPPs) for efficient red PeLEDs with precisely tunable wavelengths. By simply tuning the alloying ratio of dual spacer cations, the thickness distribution of quantum wells in the RPP films can be precisely modulated without deteriorating their charge-transport ability and energy funneling processes. Consequently, efficient PeLEDs with tunable emissions between pure red (626 nm) and deep red (671 nm) are achieved with peak EQEs up to 11.5%, representing the highest values among RPP-based pure-red PeLEDs. This work opens a new route for color tuning, which will spur future developments of pure-red or even pure-blue PeLEDs with high performance.","dates":{"release":"2021-01-01T00:00:00Z","publication":"2021 Dec","modification":"2025-04-18T14:09:34.979Z","creation":"2025-04-04T19:38:22.291Z"},"accession":"S-EPMC11468992","cross_references":{"pubmed":["34632623"],"doi":["10.1002/adma.202104381"]}}