Hybrid organic light-emitting devices (OLEDs) employing inorganic oxides as carrier transport layer can further improve the performances of OLEDs, such as power efficiency, reduce turn-on voltage and enhance stability. Vacuum thermal evaporating (VTE) and ultrasonic spray coating (USC) molybdenum trioxide (MoO₃) films with the thickness of 60 nm are used as hole transport layer (HTL) to realized hybrid OLEDs. USC-MoO₃ based OLED performs much better than VTE-MoO₃ based OLED. Atom forces microscope images shows that both VTE-MoO₃ film and emitting layer deposited on it have an extremely rough surface, offering convenient entrance ports for the intrusion of oxygen and water vapor into organic function layer. Nevertheless, USC MoO₃ film and emitting layer deposited on it exhibit much smoother surface so that oxygen and water vapor must completely destroy the metal cathode before they intrude in the organic function layers. Besides, to prevent MoO₃ quenching excitons, host material with excellent hole transport property is used to restrict exciton recombination region at the interface between emitting layer and electron transport layer. As a result, hybrid OLEDs employing USC-MoO₃ as HTL are realized with low turn-on voltage, improved efficiency and stability.

采用无机氧化物作为载流子传输层的混合有机发光器件（OLED）可以进一步改善OLED的性能，例如功率效率，降低导通电压并增强稳定性。真空热蒸发（VTE）和超声喷涂（USC）厚度为60 nm的三氧化钼（MoO ₃）膜用作空穴传输层（HTL），以实现混合OLED。基于USC-MoO ₃的OLED的性能要比基于VTE-MoO ₃的OLED更好。原子力显微镜图像显示，VTE-MoO ₃膜和沉积在其上的发射层均具有非常粗糙的表面，为氧气和水蒸气侵入有机功能层提供了方便的入口。尽管如此，USC MoO₃膜和沉积在其上的发射层的表面要光滑得多，因此氧气和水蒸气必须完全破坏金属阴极，然后才能侵入有机功能层。另外，为了防止MoO ₃猝灭激子，使用空穴传输性优异的主体材料来限制发光层与电子传输层之间的界面处的激子复合区域。结果，以低开启电压，提高的效率和稳定性实现了采用USC-MoO ₃作为HTL的混合OLED 。