Organic light-emitting diodes (OLEDs) have shown great success in the display applications recently. However, the applications of OLEDs in lighting are still limited due to their complex device structures. Here, we developed a novel phosphor doped glass substrate with both high scattering and excellent color conversion capability to greatly simplify the device structures of white organic light-emitting diodes (WOLEDs). A simple-structured WOLED comprising a blue OLED and the scattering fluorescent substrate was demonstrated to realize high quality white light for lighting applications. The WOLED exhibits a turn-on voltage of 2.7 V, a maximum power efficiency of 29.8 lm/W, an external quantum efficiency (EQE) of 14.2%, a color rendering index (CRI) of 86, and a correlated color-temperature (CCT) of 3900 K. The low turn-on voltage can be attributed to the single emissive layer structure used in the WOLED. The high power efficiency as well as the high EQE are due to both the high color conversion efficiency and the high scattering capability of the fluorescent substrate. In addition, the WOLED is favorable for high-quality solid-state lighting in our daily life due to its high color rendering ability along with an adequate CCT CC.

最近，有机发光二极管（OLED）在显示应用中显示出巨大的成功。然而，由于OLED的复杂装置结构，其在照明中的应用仍然受到限制。在这里，我们开发了一种新型的荧光粉掺杂玻璃基板，该基板兼具高散射性和出色的色彩转换能力，可以大大简化白色有机发光二极管（WOLED）的器件结构。演示了一种包含蓝色OLED和散射荧光基板的简单结构WOLED，可实现用于照明应用的高质量白光。WOLED的开启电压为2.7 V，最大功率效率为29.8 lm / W，外部量子效率（EQE）为14.2％，显色指数（CRI）为86，并且相关色温（ CCT）3900K。低导通电压可归因于WOLED中使用的单发射层结构。高功率效率以及高EQE是由于荧光基板的高颜色转换效率和高散射能力。此外，WOLED由于具有高显色能力和足够的CCT CC，因此在我们的日常生活中也非常适合用于高质量固态照明。