Invention Grant
- Patent Title: Use of singlet-triplet gap hosts for increasing stability of blue phosphorescent emission
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Application No.: US16047212Application Date: 2018-07-27
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Publication No.: US11678499B2Publication Date: 2023-06-13
- Inventor: Nicholas J. Thompson , Jerald Feldman , Julia J. Brown
- Applicant: Universal Display Corporation
- Applicant Address: US NJ Ewing
- Assignee: UNIVERSAL DISPLAY CORPORATION
- Current Assignee: UNIVERSAL DISPLAY CORPORATION
- Current Assignee Address: US NJ Ewing
- Agency: Duane Morris LLP
- Main IPC: H01L51/50
- IPC: H01L51/50 ; H01L51/00 ; C09K11/06
Abstract:
Arrangements for phosphorescent blue emissive materials, layers, and devices are provided. The arrangements include a host having first a triplet energy level of at least 2.8 eV and an absolute difference of not more than 0.3 eV between the first singlet and triplet energy levels, and an emitter that includes an emissive transition metal complex and a first triplet energy level of at least 2.7 eV.
Public/Granted literature
- US20190036058A1 USE OF SINGLET-TRIPLET GAP HOSTS FOR INCREASING STABILITY OF BLUE PHOSPHORESCENT EMISSION Public/Granted day:2019-01-31
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