journal article·2025-08-29

Thermally Cross-Linkable Blended Hole Transport Layer for Solution-Processed Quantum Dot Light-Emitting Diodes

Dong Hyun Kim, Kyung Jae Lee, Jeong Ha Hwang, Haeju Kwon, Eunyong Seo, Juwan Lee, Sinhui Min, Ju-Hong Cha, Dong Ryeol Whang, Jaehoon Lim, Donggu Lee

ACS Applied Nano Materials· Volume 8· Issue 34
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Abstract

Solution-processed quantum-dot light-emitting diodes (QLEDs) are promising for next-generation display technology. However, the solution process challenges multilayer fabrication due to solvent-induced damage to underlying layers. We propose a robust and highly efficient hole transport layer (HTL) based on a cross-linked blend of N 4, N 4′-Di(naphthalen-1-yl)- N 4, N 4′-bis(4-vinylphenyl) biphenyl-4,4′-Diamin (VNPB) and poly[bis(4-phenyl) (2,4,6-trimethylphenyl) amine] (PTAA). A precise control of the blend ratio allows a cross-linked structure with solvent resistance and tunable hole mobility and energy levels. The blended HTL, optimized at a 2:1 VNPB/PTAA ratio, outperforms nonblended VNPB or PTAA HTLs in QLEDs. This cross-linked blending strategy offers a promising approach for high-performance QLEDs by addressing electrical properties and solvent issues.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Quantum Dots Synthesis And Properties · Chalcogenide Semiconductor Thin Films · Semiconductor Quantum Structures and Devices

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Semiconductor Engineering, Gyeongsang National University, 501 Jinju-daero, Jinju, Gyeongnam 52828, Republic of Korea

Department of Energy Science, Centre for Artificial Atoms, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon 16419, Republic of Korea

Department of Advanced Materials, Hannam University, 1646 Yuseong-daero, Yuseong gu, Daejeon 34054, Republic of Korea

SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon 16419, Republic of Korea

Funding

Gyeongsang National University · Hannam University

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