Evaluation of uniformity for organic film evaporation using two dimensional different apertures

► We examine array of two dimensional apertures of different sizes above evaporation source optimized the distance between evaporation source and substrate. ► We demonstrate uniform deposition of organic thin film using compact equipment and larger material utilization yield. ► We achieve uniformity of film for simulation and experimental results. ► Optimum distance between evaporation source and substrate is very close.