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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.
ISSN: 2380-8195
DOI: 10.1021/acsenergylett.0c01176
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
Fulltext Permission: embargo_20210821
Fulltext Availability: With Fulltext
Appears in Collections:ERI@N Journal Articles

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