Projects per year
Abstract
We report two blue-emitting thermally activated delayed fluorescence (TADF) compounds employing a substituted carbazolophane (Czp) donor (indolo[2.2]paracyclophane). The compounds CNCzpPhTRZ and CF3CzpPhTRZ show emission maxima of 426 nm and 432 nm, respectively, with high photoluminescence quantum yields (ΦPL) of 73% and 80%, respectively. The singlet–triplet energy gap (ΔEST) of both emitters is 0.22 eV, resulting in long-delayed lifetimes of 132 μs for CNCzpPhTRZ and 158 μs for CF3CzpPhTRZ in PPT as the host matrix. Blue organic light-emitting diodes (OLEDs) showed maximum external quantum efficiencies (EQEs) of 7.4% for CNCzpPhTRZ and 11.6% for CF3CzpPhTRZ with electroluminescence maxima of ca. 460 nm.
Original language | English |
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Journal | Materials Advances |
Volume | Advance Article |
Early online date | 3 Sept 2021 |
DOIs | |
Publication status | E-pub ahead of print - 3 Sept 2021 |
Keywords
- TADF
- OLEDs
- Deep blue
- Paracyclophane
Fingerprint
Dive into the research topics of 'Electron-withdrawing group modified carbazolophane donors for deep blue thermally activated delayed fluorescence OLEDs'. Together they form a unique fingerprint.Projects
- 3 Finished
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Thermally Activated Delayed Fluorescenc: Thermally Activated Delayed Fluorescence Materials for Displays and Photodynamic Theory
Samuel, I. D. W. (PI)
1/02/18 → 31/01/20
Project: Fellowship
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TADF Emitters for OLEDs - Eli Zysman: TADF Emitters for OLEDs
Zysman-Colman, E. (PI)
1/03/17 → 31/03/21
Project: Standard
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Equipment Account: Characterisation and Manipulation of Advanced Functional Materials and their Interfaces at the Nanoscale
Samuel, I. D. W. (PI)
1/10/13 → 30/09/23
Project: Standard
Datasets
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Electron-withdrawing Group Modified Carbazolophane Donors for Deep Blue Thermally Activated Delayed Fluorescence OLED (dataset)
Gupta, A. K. (Creator), Zhang, Z. (Creator), Spuling, E. (Creator), Kaczmarek, M. (Creator), Wang, Y. (Creator), Hassanan, Z. (Creator), Samuel, I. D. W. (Creator), Bräse, S. (Creator) & Zysman-Colman, E. (Creator), University of St Andrews, 23 Sept 2021
DOI: 10.17630/8cbdf064-a1c6-482f-bf7e-77d93ccf516f
Dataset
File