Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김동하 | * |
dc.date.accessioned | 2016-11-15T02:11:22Z | - |
dc.date.available | 2016-11-15T02:11:22Z | - |
dc.date.issued | 2016 | * |
dc.identifier.issn | 1748-3387 | * |
dc.identifier.issn | 1748-3395 | * |
dc.identifier.other | OAK-19661 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/232592 | - |
dc.description.abstract | Organometal halide perovskites exhibit large bulk crystal domain sizes, rare traps, excellent mobilities and carriers that are free at room temperature-properties that support their excellent performance in charge-separating devices. In devices that rely on the forward injection of electrons and holes, such as light-emitting diodes (LEDs), excellent mobilities contribute to the efficient capture of non-equilibrium charge carriers by rare non-radiative centres. Moreover, the lack of bound excitons weakens the competition of desired radiative (over undesired non-radiative) recombination. Here we report a perovskite mixed material comprising a series of differently quantum-size-tuned grains that funnels photoexcitations to the lowest-bandgap light-emitter in the mixture. The materials function as charge carrier concentrators, ensuring that radiative recombination successfully outcompetes trapping and hence non-radiative recombination. We use the new material to build devices that exhibit an external quantum efficiency (EQE) of 8.8% and a radiance of 80 W sr(-1) m(-2). These represent the brightest and most efficient solution-processed near-infrared LEDs to date. | * |
dc.language | English | * |
dc.publisher | NATURE PUBLISHING GROUP | * |
dc.title | Perovskite energy funnels for efficient light-emitting diodes | * |
dc.type | Article | * |
dc.relation.issue | 10 | * |
dc.relation.volume | 11 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 872 | * |
dc.relation.lastpage | + | * |
dc.relation.journaltitle | NATURE NANOTECHNOLOGY | * |
dc.identifier.doi | 10.1038/NNANO.2016.110 | * |
dc.identifier.wosid | WOS:000385802900012 | * |
dc.author.google | Yuan, Mingjian | * |
dc.author.google | Li Na Quan | * |
dc.author.google | Comin, Riccardo | * |
dc.author.google | Walters, Grant | * |
dc.author.google | Sabatini, Randy | * |
dc.author.google | Voznyy, Oleksandr | * |
dc.author.google | Hoogland, Sjoerd | * |
dc.author.google | Zhao, Yongbiao | * |
dc.author.google | Beauregard, Eric M. | * |
dc.author.google | Kanjanaboos, Pongsakorn | * |
dc.author.google | Lu, Zhenghong | * |
dc.author.google | Kim, Dong Ha | * |
dc.author.google | Sargent, Edward H. | * |
dc.contributor.scopusid | 김동하(26039227400) | * |
dc.date.modifydate | 20240123104500 | * |