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Title: | White electroluminescence from perovskite-organic heterojunction | Authors: | Nur Fadilah Jamaludin Natalia Yantara Giovanni, David Febriansyah, Benny Tay, Yeow Boon Salim, Teddy Sum, Tze Chien Mhaisalkar, Subodh Mathews, Nripan |
Keywords: | Engineering::Materials::Functional materials | Issue Date: | 2020 | Source: | Nur Fadilah Jamaludin, Natalia Yantara, Giovanni, D., Febriansyah, B., Tay, Y. B., Salim, T., ... Mathews, N. (2020). White electroluminescence from perovskite-organic heterojunction. ACS Energy Letters, 5(8), 2690-2697. doi:10.1021/acsenergylett.0c01176 | Journal: | ACS Energy Letters | Abstract: | Despite extensive reports on red and green perovskite-based LEDs (PeLEDs), development of white PeLEDs remains limited by the low photoluminescence quantum yield of white-emitting perovskites and the undesired energy-transfer (ET) process occurring in multidomain Ruddlesden−Popper perovskites. While ET is beneficial for achieving efficient monochromatic emissions, the broadband spectrum required for white electroluminescence makes this phenomenon undesirable. Processing-induced physical separation of emitters has been proposed as an effective way to curb ET. Here, it is shown that by adopting a bilayered emitter configuration, achieved through a facile antisolvent-assisted spin-coating process, an increase in spatial separation between the blue perovskite and red-emitting organic species employed can be realized. This, in turn, has allowed for effective reduction of ET efficiency, leading to a record efficiency of 1.3%, the highest achieved to date from a perovskite-based white electroluminescent device. | URI: | https://hdl.handle.net/10356/143322 | ISSN: | 2380-8195 | DOI: | 10.1021/acsenergylett.0c01176 | DOI (Related Dataset): | 10.21979/N9/QRMTPT | Schools: | School of Materials Science and Engineering School of Physical and Mathematical Sciences |
Research Centres: | Energy Research Institute @ NTU (ERI@N) | Rights: | This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Energy Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsenergylett.0c01176 | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | ERI@N Journal Articles |
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