Fluorescent white OLEDs with a high color-rendering index using a silicon-cored anthracene derivative as a blue host
- Authors
- Kwak, Jeonghun; Lyu, Yi‐Yeol; Lee, Hyunkoo; Char, Kookheon; Lee, Changhee
- Issue Date
- Sep-2010
- Publisher
- 한국정보디스플레이학회
- Citation
- Journal of Information Display, v.11, no.3, pp 123 - 127
- Pages
- 5
- Journal Title
- Journal of Information Display
- Volume
- 11
- Number
- 3
- Start Page
- 123
- End Page
- 127
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/147979
- DOI
- 10.1080/15980316.2010.9656258
- ISSN
- 1598-0316
2158-1606
- Abstract
- Fluorescent white organic light-emitting diodes showing high color-rendering indices (CRIs) of up to 81 was demonstrated, with a silicon-cored anthracene derivative (PATSPA) doped with DPAVBi utilized as the deep-blue host and dye materials, and the commercial dyes rubrene and DCM2 utilized as the orange- and red-light-emitting dyes. The devices, consisting of three emissive layers, showed bright-white-light emission, but the ratio of the blue peak to the orange and red peaks changed with the current density and the thickness of the blue emissive layer. A high CRI was achieved with the use of a deep-blue emitter doped in a novel host and by optimizing the blue-layer thickness. The device with a blue-layer thickness of 10 nm showed the Commission Internationale de l'Eclairage (CIE) color coordinate of (0.33, 0.35), a high CRI of 81, and a moderate external quantum efficiency of 2% at a current density of 2.5 mA/cm
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