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Efficient Ruddlesden-Popper Perovskite Light-Emitting Diodes with Randomly Oriented Nanocrystals
DC Field | Value | Language |
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dc.contributor.author | Lee, Hyeon-Dong | - |
dc.contributor.author | Kim, Hobeom | - |
dc.contributor.author | Cho, Himchan | - |
dc.contributor.author | Cha, Wonhee | - |
dc.contributor.author | Hong, Yongseok | - |
dc.contributor.author | Kim, Young-Hoon | - |
dc.contributor.author | Sadhanala, Aditya | - |
dc.contributor.author | Venugopalan, Vijay | - |
dc.contributor.author | Kim, Joo Sung | - |
dc.contributor.author | Choi, Jin Woo | - |
dc.contributor.author | Lee, Chang-Lyoul | - |
dc.contributor.author | Kim, Dongho | - |
dc.contributor.author | Yang, Hoichang | - |
dc.contributor.author | Friend, Richard H. | - |
dc.contributor.author | Lee, Tae-Woo | - |
dc.date.accessioned | 2021-01-31T04:59:47Z | - |
dc.date.available | 2021-01-31T04:59:47Z | - |
dc.date.created | 2020-04-10 | - |
dc.date.created | 2020-04-10 | - |
dc.date.issued | 2019-07 | - |
dc.identifier.citation | Advanced Functional Materials, Vol.29 No.27, p. 1901225 | - |
dc.identifier.issn | 1616-301X | - |
dc.identifier.other | 95650 | - |
dc.identifier.uri | https://hdl.handle.net/10371/171787 | - |
dc.description.abstract | Ruddlesden-Popper phase (RP-phase) perovskites that consist of 2D perovskite slabs interleaved with bulky organic ammonium (OA) are favorable for light-emitting diodes (LEDs). The critical limitation of LED applications is that the insulating OA arranged in a preferred orientation limits charge transport. Therefore, the ideal solution is to achieve a randomly connected structure that can improve charge transport without hampering the confinement of the electron-hole pair. Here, a structurally modulated RP-phase metal halide perovskite (MHP), (PEA)(2)(CH3NH3)(m-1)PbmBr3m+1 is introduced to make the randomly oriented RP-phase unit and ensure good connection between them by applying modified nanocrystal pinning, which leads to an increase in the efficiency of perovskite LEDs (PeLEDs). The randomly connected RP-phase MHP forces contact between inorganic layers and thereby yields efficient charge transport and radiative recombination. Combined with an optimal dimensionality, (PEA)(2)(CH3NH3)(2)Pb3Br10, the structurally modulated RP-phase MHP exhibits increased photoluminescence quantum efficiency, from 0.35% to 30.3%, and their PeLEDs show a 2,018 times higher current efficiency (20.18 cd A(-1)) than in the 2D PeLED (0.01 cd A(-1)) and 673 times than in the 3D PeLED (0.03 cd A(-1)) using the same film formation process. This approach provides insight on how to solve the limitation of RP-phase MHP for efficient PeLEDs. | - |
dc.language | 영어 | - |
dc.publisher | John Wiley & Sons Ltd. | - |
dc.title | Efficient Ruddlesden-Popper Perovskite Light-Emitting Diodes with Randomly Oriented Nanocrystals | - |
dc.type | Article | - |
dc.contributor.AlternativeAuthor | 이태우 | - |
dc.identifier.doi | 10.1002/adfm.201901225 | - |
dc.citation.journaltitle | Advanced Functional Materials | - |
dc.identifier.wosid | 000478619900008 | - |
dc.identifier.scopusid | 2-s2.0-85063695561 | - |
dc.citation.number | 27 | - |
dc.citation.startpage | 1901225 | - |
dc.citation.volume | 29 | - |
dc.identifier.sci | 000478619900008 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Lee, Tae-Woo | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | LASER CRYSTALLIZATION | - |
dc.subject.keywordPlus | ENERGY | - |
dc.subject.keywordPlus | STATES | - |
dc.subject.keywordAuthor | carrier transport | - |
dc.subject.keywordAuthor | nanocrystal orientation | - |
dc.subject.keywordAuthor | nanocrystal pinning | - |
dc.subject.keywordAuthor | quasi-2D perovskite | - |
dc.subject.keywordAuthor | structural modulation | - |
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