“…These films have been widely used in various applications, including electrochromic devices [1], photocatalysts [2], storage-type cathode ray tubes [3], energy-efficient windows [4], organic solar cells [5,6], flat panel displays (FPD) [7], gas sensors [8], and OLEDs [9]. TCO films have distinct characteristics such as low electrical resistivity, high transparency in visible region, and high absorption in the ultraviolet (UV) and infrared (IR) regions.…”