Tham khảo tài liệu 'organic light emitting diode part 12', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Organic Light Emitting Diode for White Light Emission 213 parallel approaches can only enhance progress. Another related reason for optimism has to do with the fact that OLED technology as a whole is still in a very early stage of development. OLEDs utilize organic molecules that are literally blended together into relatively simple device structures that then yield impressive performance. The number of possible organic molecules each with tunable functions that can be utilized is virtually unlimited due to the capabilities of modern organic chemistry. In fact the field is really still in its infancy with regard to understanding what types of molecules should be made. Although the device physics of an OLED is largely understood the detailed physics of charge transport exciton spin formation and energy transfer is not. Similarly the detailed material science required to understand how molecules interact and produce a characteristic morphology in the solid state is not well understood. These details are necessary to guide the development of new organic molecules polymers and device structures that optimize performance. Thus there is a good chance that as basic research in OLED technology continues and as focused research on solid-state lighting accelerates the exponential rate of progress seen in the last decade will continue into the next. If so then by the end of the next decade OLEDs will have a good shot at surpassing fluorescents as the premier lighting technology. 7. Future prospects of WOLED The prospects of organic LEDs are very good. In the R D scenario new efficient emitters are being reported everyday which are far more efficient than those which are in present use. On the technology side new encapsulation strategies are being introduced particularly those based on of thin film encapsulation which has shown encouraging results. Similarly new ways to reduce the turn on voltage by doping of charge transport layers are also in progress. New organic deposition
