Solution-Based Ultrasonic Mist Deposition Method for the Formation of Transparent Conductive Thin Oxide Films and Organic Polymer Solar Cells
Takumi IKENOUE and Shizuo FUJITA
Abstract:A novel solution-based ultrasonic mist deposition method has been developed for the formation of organic solar cells. This technique enabled low-resistive gallium-doped zinc oxide (ZnO:Ga) and indium-tin-oxide (ITO) thin films capable of applying as anode layers in the device. Low resistive and flat PEDOS:PSS hole transport layer and P3HT:PCBM active layers were also deposited by this technique. The solar-cell devices with mist-deposited PEDOT:PSS or P3HT:PCBM layers showed higher short circuit current density and power conversion efficiency than those with spin-coated PEDOT:PSS or P3HT:PCBM layers. The results encourage the promising potential of the ultrasonic mist deposition method for low-cost device fabrication. Key Words:Mist deposition, Transparent conductive oxide, ITO (indium-tin-oxide), ZnO (zinc oxide), Organic polymer solar cell, Solution-based deposition