Method of screening for electron transport material and hole blocking material used in organic light emitting device
US11856809B2 · kind B2 · utility
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Key dates
| Filing date | Jan 31, 2020 |
| Grant date | Dec 26, 2023 |
| Priority date | — |
| Expiry date | Jun 16, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/50
Abstract
A method of screening for an electron transport material included in an electron transport layer of an organic light emitting device and a method of screening for a hole blocking material included in a hole blocking layer of the organic light emitting device, the method using a heterogeneous electron transfer rate constant (K) value to select the electron transport material and an electron donating rate constant kd to select the hole blocking material, thereby capable of realizing the organic light emitting device having an excellent balance between luminous efficiency and lifetime.
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