Current Challenges and Presented Solutions in the Path of Development of Organic Light-Emitting Diodes Technology

organic light-emitting diodes )OLEDs( are quickly becoming the next generation of lighting sources due to the following advantages: low-cost manufacture methods, low power consumption, environment compatibility, light and flexibility. Commercialization of organic light-emitting diode lightings will depend on the success of overcoming current challenges in industrial manufacture method, efficiency and life time of system. In this study, current developments in the field of types of materials and preparation method of organic light-emitting diodes are discussed. Plastic substrates used in OLEDs, ITO smoothing method, transparent conductive electrodes replacing ITO, encapsulation methods and increasing light intensity are investigated. Most interesting manufacturing methods of OLED system such as roll-to-roll printing, gravure printing and inkjet printing are discussed and compared.