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- Publisher Website: 10.1002/adma.202005570
- Scopus: eid_2-s2.0-85096653472
- PMID: 33215773
- WOS: WOS:000590595400001
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Article: High‐Performance Blue Perovskite Light‐Emitting Diodes Enabled by Efficient Energy Transfer between Coupled Quasi‐2D Perovskite Layers
Title | High‐Performance Blue Perovskite Light‐Emitting Diodes Enabled by Efficient Energy Transfer between Coupled Quasi‐2D Perovskite Layers |
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Authors | |
Keywords | blue perovskite LEDs defect passivation energy transfer |
Issue Date | 2021 |
Publisher | Wiley-VCH Verlag GmbH & Co KGaA. The Journal's web site is located at http://www.wiley-vch.de/publish/en/journals/alphabeticIndex/2089 |
Citation | Advanced Materials, 2021, v. 33 n. 1, p. article no. 2005570 How to Cite? |
Abstract | While there has been extensive investigation into modulating quasi-2D perovskite compositions in light-emitting diodes (LEDs) for promoting their electroluminescence, very few reports have studied approaches involving enhancement of the energy transfer between quasi-2D perovskite layers of the film, which plays very important role for achieving high-performance perovskite LEDs (PeLEDs). In this work, a bifunctional ligand of 4-(2-aminoethyl)benzoic acid (ABA) cation is strategically introduced into the perovskite to diminish the weak van der Waals gap between individual perovskite layers for promoting coupled quasi-2D perovskite layers. In particular, the strengthened interaction between coupled quasi-2D perovskite layers favors an efficient energy transfer in the perovskite films. The introduced ABA can also simultaneously passivate the perovskite defects by reducing metallic Pb for less nonradiative recombination loss. Benefiting from the advanced properties of ABA incorporated perovskites, highly efficient blue PeLEDs with external quantum efficiency of 10.11% and a very long operational stability of 81.3 min, among the best performing blue quasi-2D PeLEDs, are achieved. Consequently, this work contributes an effective approach for high-performance and stable blue PeLEDs toward practical applications. |
Persistent Identifier | http://hdl.handle.net/10722/305808 |
ISSN | 2023 Impact Factor: 27.4 2023 SCImago Journal Rankings: 9.191 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Ren, Z | - |
dc.contributor.author | Yu, J | - |
dc.contributor.author | Qin, Z | - |
dc.contributor.author | Wang, J | - |
dc.contributor.author | SUN, J | - |
dc.contributor.author | Chan, CCS | - |
dc.contributor.author | Ding, S | - |
dc.contributor.author | Wang, K | - |
dc.contributor.author | Chen, R | - |
dc.contributor.author | Wong, KS | - |
dc.contributor.author | Lu, X | - |
dc.contributor.author | Yin, WJ | - |
dc.contributor.author | Choy, WCH | - |
dc.date.accessioned | 2021-10-20T10:14:37Z | - |
dc.date.available | 2021-10-20T10:14:37Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Advanced Materials, 2021, v. 33 n. 1, p. article no. 2005570 | - |
dc.identifier.issn | 0935-9648 | - |
dc.identifier.uri | http://hdl.handle.net/10722/305808 | - |
dc.description.abstract | While there has been extensive investigation into modulating quasi-2D perovskite compositions in light-emitting diodes (LEDs) for promoting their electroluminescence, very few reports have studied approaches involving enhancement of the energy transfer between quasi-2D perovskite layers of the film, which plays very important role for achieving high-performance perovskite LEDs (PeLEDs). In this work, a bifunctional ligand of 4-(2-aminoethyl)benzoic acid (ABA) cation is strategically introduced into the perovskite to diminish the weak van der Waals gap between individual perovskite layers for promoting coupled quasi-2D perovskite layers. In particular, the strengthened interaction between coupled quasi-2D perovskite layers favors an efficient energy transfer in the perovskite films. The introduced ABA can also simultaneously passivate the perovskite defects by reducing metallic Pb for less nonradiative recombination loss. Benefiting from the advanced properties of ABA incorporated perovskites, highly efficient blue PeLEDs with external quantum efficiency of 10.11% and a very long operational stability of 81.3 min, among the best performing blue quasi-2D PeLEDs, are achieved. Consequently, this work contributes an effective approach for high-performance and stable blue PeLEDs toward practical applications. | - |
dc.language | eng | - |
dc.publisher | Wiley-VCH Verlag GmbH & Co KGaA. The Journal's web site is located at http://www.wiley-vch.de/publish/en/journals/alphabeticIndex/2089 | - |
dc.relation.ispartof | Advanced Materials | - |
dc.rights | Submitted (preprint) Version This is the pre-peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. Accepted (peer-reviewed) Version This is the peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. | - |
dc.subject | blue perovskite LEDs | - |
dc.subject | defect passivation | - |
dc.subject | energy transfer | - |
dc.title | High‐Performance Blue Perovskite Light‐Emitting Diodes Enabled by Efficient Energy Transfer between Coupled Quasi‐2D Perovskite Layers | - |
dc.type | Article | - |
dc.identifier.email | Ren, Z: zhwren@hku.hk | - |
dc.identifier.email | Choy, WCH: chchoy@eee.hku.hk | - |
dc.identifier.authority | Choy, WCH=rp00218 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1002/adma.202005570 | - |
dc.identifier.pmid | 33215773 | - |
dc.identifier.scopus | eid_2-s2.0-85096653472 | - |
dc.identifier.hkuros | 327827 | - |
dc.identifier.volume | 33 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | article no. 2005570 | - |
dc.identifier.epage | article no. 2005570 | - |
dc.identifier.isi | WOS:000590595400001 | - |
dc.publisher.place | Germany | - |