Cited by 276Luminescence and Fluorescent MaterialsOrganic Light-Emitting Diodes ResearchLuminescence Properties of Advanced Materials

Aggregation‐Induced Dual‐Phosphorescence from Organic Molecules for Nondoped Light‐Emitting Diodes

Wang, Tao, Su, Xiaoge, Zhang, Xuepeng, Nie, Xiancheng, Huang, Linkun, Zhang, Xingyuan, Sun, Xiang, Luo, Yi +1 more·2019·Advanced Materials

Abstract

Aggregation‐induced emission (AIE) is a beneficial strategy for generating highly effective solid‐state molecular luminescence without suffering losses in quantum yield. However, the majority of reported AIE‐active molecules exhibit only strong fluorescence, which is not ideal for electrical excitation in organic light‐emitting diodes (OLEDs). By introducing various substituent groups onto the biscarbazole compound, a series of molecular materials with aggregation‐induced phosphorescence (AIP) is designed, which exhibits two distinctly different phosphorescence bands and an absolute solid‐state room‐temperature phosphorescence quantum yield up to 64%. Taking advantage of the AIE feature, the AIP molecules are fabricated into OLEDs as a homogeneous light‐emitting layer, which allows for relatively small efficiency roll‐off and shows an external electroluminescence quantum yield of up to 5.8%, more than the theoretical limit for purely fluorescent OLED devices. The design showcases a promising strategy for the production of cost‐effective and highly efficient OLED technology.

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Crossref · 10.1002/adma.201904273

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  1. Frisch M., 2016, Gaussian 16 Revision B.01

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Authors
Wang, T., Su, X., Zhang, X., Nie, X., Huang, L., Zhang, X., Sun, X., Luo, Y., & Zhang, G.
Affiliations
  • University of Science and Technology of China (CN)
  • New York University Shanghai (CN)
Corresponding author
  • Zhang, Xuepeng
  • Sun, Xiang
  • Zhang, Guoqing
Venue
Advanced Materials
Publisher
Wiley
Published
2019-11-06
Volume
31
Issue
51
Pages
e1904273-e1904273
ISSN
  • 0935-9648 (ISSN-L)
  • 1521-4095
OpenAlex
W2985037923
Cited by
276
References
56
Citations by year
2026: 21 · 2025: 29 · 2024: 56 · 2023: 46 · 2022: 49 · 2021: 46 · 2020: 29
FWCI
11.17
Type
journal article
Language
en
Open access
closed
Locations
  • Advanced Materials (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Basic Research Program of China (2017YFA0303500)
  • Fundamental Research Funds for the Central Universities (WK2340000068)
  • National Natural Science Foundation of China (21903054)
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › Luminescence and Fluorescent Materials
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Light-Emitting Diodes Research
  • Physical Sciences › Materials Science › Materials Chemistry › Luminescence Properties of Advanced Materials
Keywords
aggregation-induced phosphorescence, aggregation-induced emission, organic light-emitting diodes, non-doped OLEDs, substituent effects, room-temperature phosphorescence, phosphorescence quantum yield, efficiency roll-off

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