Aqueous solution-processed MoO3 thick films as hole injection and short-circuit barrier layer in large-area organic light-emitting devices

作者：Liang, Jian; Zu, Feng-Shuo; Ding, Lei; Xu, Mei-Feng; Shi, Xiao-Bo; Wang, Zhao-Kui^*; Liao, Liang-Sheng

来源：Applied Physics Express, 2014, 7(11): 111601.

DOI：10.7567/APEX.7.111601

• INDIUM-TIN-OXIDE
• INTERFACIAL LAYER
• BUFFER LAYERS
• METAL-OXIDES
• DIODES
• EFFICIENCY
• CELLS

Thick molybdenum trioxide (MoO3) films (ca. 120 nm) were successfully deposited by an aqueous solution-processed method based on direct dissolution of the powder of ammonium molybdate ((NH4)(6)Mo7O24 center dot 4H(2)O) precursors in deionized water. X- ray photoelectron spectroscopy (XPS) and ultraviolet photoelectron spectroscopy (UPS) analyses showed that aqueous solution-processed MoO3 (sMoO(3)) has almost the same characteristics as the vacuum-evaporated MoO3 (eMoO(3)). Besides acting as a hole injection material, thicker MoO3 operated as a short-circuit barrier layer in large-scale organic light-mitting devices (OLEDs). The successful fabrication of 150 x 150 mm(2) lighting panels confirmed the dual function of thick sMoO(3) films in large-area OLEDs.

• 出版日期2014-11
• 单位苏州大学