Enhanced outcoupling in down-conversion white organic light-emitting diodes using imprinted microlens array films with breath figure patterns
| Autor: | Jisoo Kang, Yong Hyun Kim, Dong-Jin Lee, Jonghee Lee, Joo Won Han, Seunggun Yu, Nam Sung Cho, Woo Jin Sung, Chul Woong Joo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
lcsh:Biotechnology 02 engineering and technology outcoupling structures 010402 general chemistry light extraction 01 natural sciences lcsh:TP248.13-248.65 204 Optics / Optical applications organic light-emitting diodes OLED lcsh:TA401-492 General Materials Science Diode Microlens business.industry Down conversion Optical Magnetic and Electronic Device Materials 40 Optical magnetic and electronic device materials organic light-emitting diodes 021001 nanoscience & nanotechnology 201 Electronics / Semiconductor / TCOs 0104 chemical sciences down-conversion white oled Optoelectronics lcsh:Materials of engineering and construction. Mechanics of materials 0210 nano-technology business |
| Zdroj: | Science and Technology of Advanced Materials, Vol 20, Iss 1, Pp 35-41 (2019) Science and Technology of Advanced Materials |
| ISSN: | 1878-5514 1468-6996 |
| Popis: | We demonstrate high-performance down-conversion microlens array (DC-MLA) films for white organic light-emitting diodes (OLEDs). The DC-MLA films are readily fabricated by an imprinting method based on breath figure patterns, which are directly formed on the polymer substrate with a novel concept. The DC-MLA films result in high-quality white light as well as enhanced light outcoupling efficiency for white OLEDs. The external quantum efficiency and power efficiency of OLEDs with DC-MLA films are increased by a factor of 1.35 and 1.86, respectively, compared to OLEDs without outcoupling films. Moreover, the white OLEDs with DC-MLA films achieve a high color-rendering index of 84.3. It is anticipated that the novel DC-MLA films fabricated by the simple imprinting process with breath figure patterns can contribute to the development of efficient white OLEDs. Graphical Abstract |
| Databáze: | OpenAIRE |
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