Guangzhou Etmy Technology Co., Ltd. , https://www.gzdigitaltalkie.com
Although the progress of materials development of organic light-emitting diodes (OLEDs) seems to be quite good, the industry has recently disclosed news about breakthroughs in performance and brightness. However, there is still a major problem in the field of flexible lighting and display devices. Unresolved: The life of such devices is too short.
Susann Reuter, director of market analysis firm IDTechEx, points out that no matter how impressive or elegant the lighting display devices are, consumers are not willing to buy products with short product life.
The main cause of product life problems lies in the luminescent material itself, ie its inherent sensitivity to moisture and oxygen. Reuter said that this is also true for organic photovoltaics (OPV) materials – although this emerging material has the potential for low-cost processing compared to crystalline silicon, even for some that require little long life. For its application, its life is still not long enough.
Thin film inorganic PV materials, such as those based on amorphous silicon, copper indium selenide (CIGS) or cadmium telluride (CdTe), are less sensitive, but similarly, when it comes to flexible or bendable product designs, With a 20-year product warranty, manufacturers are often unable to respond.
In both OLED and OPV applications, glass can exhibit better performance because glass provides good barrier properties. However, in applications such as flexible or polymer-based substrates, the situation is quite different. In such applications, special coating and lamination techniques are required to protect sensitive organic materials.
The industry has been researching and developing in this area, such as Vitex Systems, Calif., and Reuter noted that the company has developed a flexible substrate with a special stack of layers that combines polymer with thin aluminum oxide. For OLEDs and OPVs, fundamental research from the industry is constantly evolving to advance these emerging applications. 