{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T05:18:27Z","timestamp":1792559907643,"version":"4.5.0"},"reference-count":37,"publisher":"Wiley","license":[{"start":{"date-parts":[[2024,4,15]],"date-time":"2024-04-15T00:00:00Z","timestamp":1713139200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["No. 52302171"],"award-info":[{"award-number":["No. 52302171"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100007129","name":"Natural Science Foundation of Shandong Province","doi-asserted-by":"publisher","award":["ZR2023QF005"],"award-info":[{"award-number":["ZR2023QF005"]}],"id":[{"id":"10.13039\/501100007129","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100012226","name":"Fundamental Research Funds for the Central Universities","doi-asserted-by":"publisher","award":["3072022TS2613"],"award-info":[{"award-number":["3072022TS2613"]}],"id":[{"id":"10.13039\/501100012226","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100012226","name":"Fundamental Research Funds for the Central Universities","doi-asserted-by":"publisher","award":["79000012\/012"],"award-info":[{"award-number":["79000012\/012"]}],"id":[{"id":"10.13039\/501100012226","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Small"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    The development of pure\u2010blue perovskite light\u2010emitting diodes (PeLEDs) faces challenges of spectral stability and low external quantum efficiency (EQE) due to phase separation in mixed halide compositions. Perovskite quantum dots (QDs) with strong confinement effects are promising alternatives to achieve high\u2010quality pure\u2010blue PeLEDs, yet their performance is often hindered by the poor size distribution and high trap density. A strategy combining thermodynamic control with a polishing\u2010driven ligand exchange process to produce high\u2010quality QDs is developed. The strongly\u2010confined pure\u2010blue (\u2248470\u00a0nm) CsPbBr\n                    <jats:sub>3<\/jats:sub>\n                    QDs exhibit narrow size distribution (12% dispersion) and are achieved in Br\u2010rich ion environment based on growth thermodynamic control. Subsequent polishing\u2010driven ligand exchange process removes imperfect surface sites and replaces initial long\u2010chain organic ligands with short\u2010chain benzene ligands. The resulting QDs exhibit high photoluminescence quantum yield (PLQY) to near\u2010unity. The resulting PeLEDs exhibit a pure\u2010blue electroluminescence (EL) emission at 472\u00a0nm with narrow full\u2010width at half\u2010maximum (FWHM) of 25\u00a0nm, achieving a maximum EQE of 10.7% and a bright maximum luminance of 7697\u00a0cd\u00a0m\n                    <jats:sup>\u22122<\/jats:sup>\n                    . The pure\u2010blue PeLEDs show ultrahigh spectral stability under high voltage, a low roll\u2010off of EQE, and an operational half\u2010lifetime (T\n                    <jats:sub>50<\/jats:sub>\n                    ) of 127\u00a0min at an initial luminance of 103\u00a0cd\u00a0m\n                    <jats:sup>\u22122<\/jats:sup>\n                    under continuous operation.\n                  <\/jats:p>","DOI":"10.1002\/smll.202400885","type":"journal-article","created":{"date-parts":[[2024,4,15]],"date-time":"2024-04-15T03:59:52Z","timestamp":1713153592000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":29,"title":["Strongly\u2010Confined CsPbBr\n                    <sub>3<\/sub>\n                    Perovskite Quantum Dots with Ultralow Trap Density and Narrow Size Distribution for Efficient Pure\u2010Blue Light\u2010Emitting Diodes"],"prefix":"10.1002","author":[{"given":"Shibo","family":"Wei","sequence":"first","affiliation":[{"name":"Qingdao Innovation and Development Base Harbin Engineering University  Qingdao 266000 China"},{"name":"College of Physics and Optoelectronic Engineering Harbin Engineering University  Harbin 150001 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jingcong","family":"Hu","sequence":"additional","affiliation":[{"name":"Beijing Key Lab of Microstructure and Property of Advanced Materials College of Materials Science and Engineering Beijing University of Technology  Beijing 100124 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6074-1412","authenticated-orcid":false,"given":"Chenghao","family":"Bi","sequence":"additional","affiliation":[{"name":"Qingdao Innovation and Development Base Harbin Engineering University  Qingdao 266000 China"},{"name":"College of Physics and Optoelectronic Engineering Harbin Engineering University  Harbin 150001 China"},{"name":"Yantai Research Institute Harbin Engineering University  Yantai 264000 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ke","family":"Ren","sequence":"additional","affiliation":[{"name":"Qingdao Innovation and Development Base Harbin Engineering University  Qingdao 266000 China"},{"name":"College of Physics and Optoelectronic Engineering Harbin Engineering University  Harbin 150001 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xingyu","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Chemistry University of Leeds  Leeds LS2 9JT UK"},{"name":"Department of Earth Sciences Utrecht University  Utrecht 3584 CB The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nora H.","family":"de de Leeuw","sequence":"additional","affiliation":[{"name":"School of Chemistry University of Leeds  Leeds LS2 9JT UK"},{"name":"Department of Earth Sciences 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