Rigid Donor Units Strategy Enable Highly Efficient Narrowband Blue Multi-Resonance Thermally Activated Delayed Fluorescence Emitters

Key Points

• The aim is to design highly efficient narrowband blue TADF emitters using rigid donor units.
• Utilized benzothienocarbazole regioisomers for emitter design
• Analyzed structural and electronic properties
• Evaluated thermal and photophysical characteristics of emitters
• Demonstrated high efficiency in narrowband blue emission
• Showed improved performance due to the rigid molecular structure
• Highlighted effective electron-donating capabilities of BTC regioisomers