Stacking layered structure of polymer light emitting diodes prepared by evaporative spray deposition using ultradilute solution for improving carrier balance
| Autor: | Katsuhiko Fujita, Youichi Aoki, Masato Shakutsui |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
chemistry.chemical_classification
Materials science business.industry Metals and Alloys Stacking Heterojunction Surfaces and Interfaces Polymer Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry Materials Chemistry OLED Optoelectronics Quantum efficiency business HOMO/LUMO Layer (electronics) Diode |
| Zdroj: | Thin Solid Films. 518:493-496 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/j.tsf.2009.07.006 |
| Popis: | Polymer light-emitting diodes (PLEDs) with staking layered structures are prepared by the evaporative spray deposition using ultradilute solution (ESDUS) method, which has enabled forming a polymer layer onto another polymer layer even if both polymers are soluble in a solvent used for the preparation. By this method, polymers having various HOMO and LUMO levels can be stacked as a hole transport layer, an emitting layer and an electron transport layer as commonly employed in small molecule-based organic light emitting diodes. Here we demonstrated that a PLED having a tri-layer structure using three kinds of polymers showed significant improvement in quantum efficiency compared with those having a single or bi-layer structure of corresponding polymers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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