White stacked OLED with 38 lm/W and 100,000-hour lifetime at 1000 cd/m2 for display and lighting applications
White stacked OLED with 38 lm/W and 100,000-hour lifetime at 1000 cd/m2 for display and lighting applications
复制标题
DOI：
10.1889/jsid17.2.159
复制
发表时间：
2009-02-01
影响因子：
2.3
通讯作者：
Birnstock, Jan
中科院分区：
文献类型：
--
作者：
He, Gufeng;Rothe, Carsten;Birnstock, Jan
在显示器和照明应用中，决定有机发光二极管(OLED)商业成功的三个关键参数是功率效率、寿命和价格竞争力。引脚技术被广泛认为是最大化功率效率和寿命的首选方法。这里报道了一种高效率、长寿命的白光二极管，它是通过将蓝色荧光发射单元与绿色和红色磷光发射单元堆叠在一起而实现的。每个发射单元的传输层都使用了专有材料，大大提高了功率效率和稳定性。在CIE色坐标为(0.43，0.44)和显色指数(CRI)为90的情况下，1000cd/m(2)的功率效率为38 lm/W。在初始亮度为1000 cd/m(2)的情况下，外推寿命超过100,000小时，满足大多数应用的规格。通过选择发射材料和改变传输层空腔，发射颜色也可以很容易地调谐到用于显示应用的等能量白色。
The three critical parameters in determining the commercial success of organic light-emitting diodes (OLEDs), both in display and lighting applications, are power efficiency, lifetime, and price competitiveness. PIN technology is widely considered as the preferred way to maximize power efficiency and lifetime. Here, a high-efficiency and long-lifetime white-light-emitting diode, which has been realized by stacking a blue-fluorescent emission unit together with green-and red-phosphorescent emission units, is reported. Proprietary materials have been used in transport layers of each emission unit, which significantly improves the power efficiency and stability. The power efficiency at 1000 cd/m(2) is 38 lm/W with CIE color coordinates of (0.43, 0.44) and a color-rendering index (CRI) of 90. An extrapolated lifetime at an initial luminance of 1000 cd/m(2) is above 100,000 hours, which fulfils the specifications for most applications. The emission color can also be easily tuned towards the equal-energy white for display applications by selecting emitting materials and varying the transport-layer cavities.