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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/8402
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dc.contributor.authorLiao, Zebing-
dc.contributor.authorYu, Xinyi-
dc.contributor.authorKumar, Mallem-
dc.contributor.authorKang, Chengbin-
dc.contributor.authorSong, Jianxin-
dc.contributor.authorGao, Yiyang-
dc.contributor.authorBhadra, Debjyoti-
dc.contributor.authorProdanov, Maksym F.-
dc.contributor.authorShah, Asmita-
dc.contributor.authorSingh, Dharmenda Pratap-
dc.contributor.authorKumar, Sandeep-
dc.contributor.authorSrivastava, Abhishek Kumar-
dc.date.accessioned2025-05-30T10:56:44Z-
dc.date.available2025-05-30T10:56:44Z-
dc.date.issued2025-07-15-
dc.identifier.citationJournal of Molecular Liquids, 2025, Vol. 430, p127810en_US
dc.identifier.urihttp://hdl.handle.net/2289/8402-
dc.descriptionRestricted Access.en_US
dc.description.abstractRecent progress in quantum dot light-emitting diodes (QLEDs) has substantially improved their external quantum efficiency (EQE), nearing the theoretical limit of 25–30% for primary-color devices. Nevertheless, this peak performance is confined to low current densities and luminance levels, with a significant efficiency roll-off observed at elevated currents. This phenomenon has been primarily attributed to imbalanced charge carrier injection under high-current operation. While charge imbalance mitigation strategies hold critical importance, research on novel hole transport layer (HTL) materials addressing this issue remains relatively underexplored. Herein, we propose a discotic liquid crystals (DLCs) material, 2,3,6,7,10,11-hexabutoxytriphenylene (HAT-4), as an innovative HTL candidate for QLEDs. The HAT-4 system demonstrates enhanced hole mobility coupled with favorable energy level alignment for efficient hole injection into QD layers. However, its implementation is hindered by suboptimal film morphology characterized by excessive crystallinity. To address this limitation, we strategically introduced poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-(4,4′-(N-(4-butylphenyl))] (TFB) as a morphology-regulating agent. Notably, the optimized HAT-4/TFB (80:20 wt%) hybrid HTL enables remarkable device performance at 5 V, achieving 953 mA·cm−2 (2.2× enhancement vs. TFB control) and 380,000cd·m2 (2.1× improvement vs. TFB control), respectively. These breakthroughs substantiate the effectiveness of DLC-based hybrid HTLs in suppressing efficiency roll-off while achieving high brightness, thus providing a viable pathway toward high-performance QLED commercialization.en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.urihttps://doi.org/10.1016/j.molliq.2025.127810en_US
dc.rights2025 Elsevieren_US
dc.subjectQuantum dot light-emitting diodesen_US
dc.subjectDiscotic liquid crystalen_US
dc.subjectCharge injectionen_US
dc.titleEnhanced charge injection in quantum dot light-emitting diodes enabled by discotic liquid crystalsen_US
dc.typeArticleen_US
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