当前位置: X-MOL 学术Color Res. Appl. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Chromaticity tunable realizable solution process single layer white organic light-emitting diode
Color Research and Application ( IF 1.4 ) Pub Date : 2021-05-14 , DOI: 10.1002/col.22684
Selin Piravadili Mucur 1
Affiliation  

The achievement of white color emission required simultaneous emission of optimized composition of blue, green, and red colors or at least two supplementary colors with similar distribution of emission intensities covering the entire visible spectrum ranging from 400 to 700 nm in solution-processable white organic light-emitting diodes (W-OLEDs). In view of this information, different concentrations of polyvinylcarbazole (PVK), red polymer Nile Red, and blue polymers such as poly(9,9-dioctylfluorenyl-2,7-diyl) (PF) and spirobifluorene derivative SPB-02T were utilized to obtain white light emission in single-layer W-OLEDs. Coupled emissions of these materials with blue luminescence from PF and SPB-02T and reddish emission from Nile Red presented white color due to energy transfer between the two polymers. Efficient solution-processed W-OLED devices were fabricated using a single layer light-emitting film with optimized concentration of ternary blends. W-OLED device performances were analyzed for their charge transport behavior depending on concentration of ternary blend. When it has been looked from the viewpoint of the closest to white color coordinates (0.33, 0.33), the W-OLED device named mpn4 with PVK:SPB-02T:Nile Red was the closest (0.33, 0.27). In consideration of energy transaction, voltage dependency in electroluminescence spectra proved that the existence of energy transfer in the mpn4-based W-OLEDs.

中文翻译:

色度可调可实现溶液工艺单层白色有机发光二极管

实现白色发射需要同时发射优化组合的蓝色、绿色和红色或至少两种具有相似发射强度分布的补充颜色,覆盖整个可见光谱范围从 400 到 700 nm 的溶液可处理白色有机光- 发光二极管(W-OLED)。鉴于此信息,不同浓度的聚乙烯咔唑 (PVK)、红色聚合物尼罗红和蓝色聚合物如聚 (9,9-二辛基芴基-2,7-二基) (PF) 和螺二芴衍生物 SPB-02T 被用于在单层 W-OLED 中获得白光发射。由于两种聚合物之间的能量转移,这些材料的耦合发射与来自 PF 和 SPB-02T 的蓝色发光以及来自尼罗红的微红色发射呈现白色。使用具有优化浓度的三元共混物的单层发光薄膜制造了高效的溶液处理 W-OLED 器件。根据三元混合物的浓度,分析了 W-OLED 器件性能的电荷传输行为。从最接近白色坐标 (0.33, 0.33) 的角度来看,名为 mpn4 的 W-OLED 设备与 PVK:SPB-02T:Nile Red 最接近 (0.33, 0.27)。考虑到能量传递,电致发光光谱中的电压依赖性证明了基于 mpn4 的 W-OLED 中存在能量转移。从最接近白色坐标 (0.33, 0.33) 的角度来看,名为 mpn4 的 W-OLED 设备与 PVK:SPB-02T:Nile Red 最接近 (0.33, 0.27)。考虑到能量传递,电致发光光谱中的电压依赖性证明了基于 mpn4 的 W-OLED 中存在能量转移。从最接近白色坐标 (0.33, 0.33) 的角度来看,名为 mpn4 的 W-OLED 设备与 PVK:SPB-02T:Nile Red 最接近 (0.33, 0.27)。考虑到能量传递,电致发光光谱中的电压依赖性证明了基于 mpn4 的 W-OLED 中存在能量转移。
更新日期:2021-05-14
down
wechat
bug