Efficient and Spectrally Stable Blue Perovskite Light-Emitting Diodes Employing a Cationic π-Conjugated Polymer.
dc.contributor.author | Yuan, Shuai | |
dc.contributor.author | Cui, Lin-Song | |
dc.contributor.author | Dai, Linjie | |
dc.contributor.author | Liu, Yun | |
dc.contributor.author | Liu, Qing-Wei | |
dc.contributor.author | Sun, Yu-Qi | |
dc.contributor.author | Auras, Florian | |
dc.contributor.author | Anaya, Miguel | |
dc.contributor.author | Zheng, Xiaopeng | |
dc.contributor.author | Ruggeri, Edoardo | |
dc.contributor.author | Yu, You-Jun | |
dc.contributor.author | Qu, Yang-Kun | |
dc.contributor.author | Abdi-Jalebi, Mojtaba | |
dc.contributor.author | Bakr, Osman M | |
dc.contributor.author | Wang, Zhao-Kui | |
dc.contributor.author | Stranks, Samuel | |
dc.contributor.author | Greenham, Neil | |
dc.contributor.author | Liao, Liang-Sheng | |
dc.contributor.author | Friend, Richard | |
dc.date.accessioned | 2021-11-24T00:30:14Z | |
dc.date.available | 2021-11-24T00:30:14Z | |
dc.date.issued | 2021-11 | |
dc.identifier.issn | 0935-9648 | |
dc.identifier.uri | https://www.repository.cam.ac.uk/handle/1810/331002 | |
dc.description.abstract | Metal 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.sponsorship | Engineering and Physical Sciences Research Council (EPSRC) for funding (EP/M01083X/1, EP/M005143/1) | |
dc.language | eng | |
dc.publisher | Wiley | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.subject | blue emissions | |
dc.subject | high efficiencies | |
dc.subject | ion migrations | |
dc.subject | perovskite light-emitting diodes | |
dc.subject | stabilities | |
dc.title | Efficient and Spectrally Stable Blue Perovskite Light-Emitting Diodes Employing a Cationic π-Conjugated Polymer. | |
dc.type | Article | |
prism.endingPage | e2103640 | |
prism.issueIdentifier | 45 | |
prism.publicationName | Advanced Materials | |
prism.startingPage | e2103640 | |
prism.volume | 33 | |
dc.identifier.doi | 10.17863/CAM.78447 | |
rioxxterms.versionofrecord | 10.1002/adma.202103640 | |
rioxxterms.version | VoR | |
rioxxterms.licenseref.uri | http://creativecommons.org/licenses/by/4.0/ | |
dc.contributor.orcid | Liu, Yun [0000-0003-1630-4052] | |
dc.contributor.orcid | Auras, Florian [0000-0003-1709-4384] | |
dc.contributor.orcid | Ruggeri, Edoardo [0000-0002-2866-0612] | |
dc.contributor.orcid | Stranks, Samuel [0000-0002-8303-7292] | |
dc.contributor.orcid | Greenham, Neil [0000-0002-2155-2432] | |
dc.contributor.orcid | Friend, Richard [0000-0001-6565-6308] | |
dc.identifier.eissn | 1521-4095 | |
rioxxterms.type | Journal Article/Review | |
pubs.funder-project-id | Royal Society (UF150033) | |
pubs.funder-project-id | European Research Council (756962) | |
pubs.funder-project-id | European Commission Horizon 2020 (H2020) Marie Sk?odowska-Curie actions (841386) | |
pubs.funder-project-id | Engineering and Physical Sciences Research Council (EP/M005143/1) | |
pubs.funder-project-id | Engineering and Physical Sciences Research Council (EP/M01083X/1) | |
pubs.funder-project-id | European Research Council (670405) | |
cam.issuedOnline | 2021-09-24 |
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