Show simple item record

dc.contributor.authorYuan, Shuai
dc.contributor.authorCui, Lin-Song
dc.contributor.authorDai, Linjie
dc.contributor.authorLiu, Yun
dc.contributor.authorLiu, Qing-Wei
dc.contributor.authorSun, Yu-Qi
dc.contributor.authorAuras, Florian
dc.contributor.authorAnaya, Miguel
dc.contributor.authorZheng, Xiaopeng
dc.contributor.authorRuggeri, Edoardo
dc.contributor.authorYu, You-Jun
dc.contributor.authorQu, Yang-Kun
dc.contributor.authorAbdi-Jalebi, Mojtaba
dc.contributor.authorBakr, Osman
dc.contributor.authorWang, Zhao-Kui
dc.contributor.authorStranks, Samuel D.
dc.contributor.authorGreenham, Neil C.
dc.contributor.authorLiao, Liang-Sheng
dc.contributor.authorFriend, Richard H.
dc.date.accessioned2021-09-26T10:26:19Z
dc.date.available2021-09-26T10:26:19Z
dc.date.issued2021-09-24
dc.date.submitted2021-05-13
dc.identifier.citationYuan, S., Cui, L., Dai, L., Liu, Y., Liu, Q., Sun, Y., … Friend, R. H. (2021). Efficient and Spectrally Stable Blue Perovskite Light-Emitting Diodes Employing a Cationic π-Conjugated Polymer. Advanced Materials, 2103640. doi:10.1002/adma.202103640
dc.identifier.issn0935-9648
dc.identifier.issn1521-4095
dc.identifier.pmid34558117
dc.identifier.doi10.1002/adma.202103640
dc.identifier.urihttp://hdl.handle.net/10754/671931
dc.description.abstractMetal halide perovskite semiconductors have demonstrated remarkable potentials in solution-processed blue light-emitting diodes (LEDs). However, the unsatisfied efficiency and spectral stability responsible for trap-mediated non-radiative losses and halide phase segregation remain the primary unsolved challenges for blue perovskite LEDs. In this study, it is reported that a fluorene-based π-conjugated cationic polymer can be blended with the perovskite semiconductor to control film formation and optoelectronic properties. As a result, sky-blue and true-blue perovskite LEDs with Commission Internationale de l'Eclairage coordinates of (0.08, 0.22) and (0.12, 0.13) at the record external quantum efficiencies of 11.2% and 8.0% were achieved. In addition, the mixed halide perovskites with the conjugated cationic polymer exhibit excellent spectral stability under external bias. This result illustrates that π-conjugated cationic polymers have a great potential to realize efficient blue mixed-halide perovskite LEDs with stable electroluminescence.
dc.description.sponsorshipThis work was supported by the 100 Talent Program of Chinese Academy of Sciences (grant no. KY2060000185) and the National Natural Science Foundation of China (NSFC) (grant no. 52103242). S.Y., Q.-W.L., Y.-J.Y., Y.-K.Q., Z.-K.W., and L.-S.L. acknowledge financial support from the Natural Science Foundation of China (nos. 91733301, 61674109, 11675252, 11605278) and the National Key R&D Program of China (no. 2016YFA0202400). L.-S.C. and R.H.F. acknowledge the Engineering and Physical Sciences Research Council (EPSRC) for funding (EP/M01083X/1, EP/M005143/1). Y.L. and R.H.F. acknowledge support from the Simons Foundation (grant 601946). The authors are grateful for computational support from the UK national high performance computing service, ARCHER, for which access was obtained via the UKCP consortium and funded by EPSRC grant ref. EP/P022561/1. L.-J.D. thanks the Cambridge Trust and China Scholarship Council (CSC) for financial support. M.A. acknowledges funding from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement no. 841386. F.A. acknowledges funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement no. 670405). S.D.S. and E.R. acknowledge funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement no. 756962 [HYPERION]). This project was also funded by the Collaborative Innovation Center of Suzhou Nano Science and Technology, and by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and by the “111” Project of The State Administration of Foreign Experts Affairs of China.
dc.publisherWiley
dc.relation.urlhttps://onlinelibrary.wiley.com/doi/10.1002/adma.202103640
dc.rightsArchived with thanks to Advanced Materials
dc.subjectStabilities
dc.subjectHigh Efficiencies
dc.subjectPerovskite Light-emitting Diodes
dc.subjectBlue Emissions
dc.subjectIon Migrations
dc.titleEfficient and Spectrally Stable Blue Perovskite Light-Emitting Diodes Employing a Cationic π-Conjugated Polymer
dc.typeArticle
dc.contributor.departmentFunctional Nanomaterials Lab (FuNL)
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentMaterial Science and Engineering
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalAdvanced Materials
dc.rights.embargodate2022-09-24
dc.eprint.versionPost-print
dc.contributor.institutionJiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou Jiangsu 215123 China
dc.contributor.institutionDepartment of Polymer Science and Engineering University of Science and Technology of China Hefei Anhui 230026 China
dc.contributor.institutionCavendish Laboratory University of Cambridge JJ Thomson Avenue Cambridge CB3 0HE UK
dc.identifier.pages2103640
kaust.personZheng, Xiaopeng
kaust.personBakr, Osman M.
dc.date.accepted2021-08-22
refterms.dateFOA2021-09-26T10:28:32Z
dc.date.published-online2021-09-24
dc.date.published-print2021-11


Files in this item

Thumbnail
Name:
adma.202103640.pdf
Size:
2.791Mb
Format:
PDF
Description:
Accepted Article
Embargo End Date:
2022-09-24

This item appears in the following Collection(s)

Show simple item record