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However, the development of highly efficient blue PeLEDs remains a significant challenge. Here, a bottom\u2010up strategy is introduced for precise charge manipulation in blue perovskites to enhance radiative recombination efficiency. By employing 1,3\u2010bis(N\u2010carbazolyl)benzene as an inserted hole transport layer, improved hole injection efficiency is achieved while effectively suppressing reverse electron transport and exciton quenching. Additionally, a fluorinated ester additive is incorporated to control perovskite crystallization, facilitating the formation of well\u2010aligned reduced\u2010dimensional phases to reduce nonradiative recombination losses. The resulting blue PeLEDs exhibit a record\u2010breaking external quantum efficiency of 25.87%, the highest reported for one\u2010step\u2010prepared blue perovskite films. Furthermore, integration with thin\u2010film transistor circuits enables solution\u2010processed active\u2010matrix perovskite displays with sharp and uniform patterning. This work provides a comprehensive pathway for advancing blue PeLEDs toward high\u2010performance display applications.<\/jats:p>","DOI":"10.1002\/adma.202503234","type":"journal-article","created":{"date-parts":[[2025,4,9]],"date-time":"2025-04-09T04:21:53Z","timestamp":1744172513000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":36,"title":["Efficient Blue Perovskite LEDs via Bottom\u2010Up Charge Manipulation for Solution\u2010Processed Active\u2010Matrix Displays"],"prefix":"10.1002","volume":"37","author":[{"given":"Yi","family":"Yu","sequence":"first","affiliation":[{"name":"School of Physics and Electronic Science East China Normal University  Shanghai 200062 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bing\u2010Feng","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Physics and Electronic Science East China Normal University  Shanghai 200062 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yang","family":"Shen","sequence":"additional","affiliation":[{"name":"Macao Institute of Materials Science and Engineering (MIMSE) Faculty of Innovation Engineering Macau University of Science and Technology  Taipa Macau 999078 China"},{"name":"Institute of Functional Nano &amp; 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