In this study, the fabrication and the characteristic analyses of OLED using in-situ passivation are investigated.OLEDs represent a disadvantage in decreasing its life due to the degradation caused by the penetration of moistureand oxygen. After the fabrication of OLED, an in-situ passivation method for inorganic thin films is developed. Aprocess that uses PECVD method which can apply a vapor deposition process at room temperature is also developed.Changes in the degradation and electric characteristics of OLEDs are also analyzed by applying SiO2 and SiNx thinfilms to OLED as a passivation layer. By applying the fabricated thin film to OLEDs as a passivation layer, the moisturepenetration in a single layer film is ensured below 1×10-2 g/m2.day. This leads to the improvement of such degradationcharacteristics in the application of multilayer films

There has been growing interest and rapid development in transparent electrode films, which are flexible and light and used in mobile, simple information, and electronic devices, and based on recent advancements in nano technology, information technology, and display technology. In particular, studies on developing such films with both high conductivity and high transmittance of visible rays are highly in demand for commercialization. In this study, transparent electrode films were developed for IT using micro patterns that show sheet resistance less than 10 Ω/□, adhesive strength more than 98%, and light transmittance more than 90%. The results of applying a surface emission gradient minimization (Honey Comb) technology to the films was the verification of the sheet resistance, adhesive strength, and light transmittance satisfying the target level of this study through Imprinting and Remolding processes.

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Nanotechnology has been finding more and more application in Green Science and Engineering. Green Nanotechnology is a versatile technique, which has always been focusing on the important challenges and latest advances in chemistry, physics, biology, engineering, and other scientific aspects of nanotechnology as well as on their societal impact and the policies that have been or should be developed to address them. Green Nanotechnology has two goals: producing nanomaterials and products without harming the environment or human health, and producing nano-products that provide solutions to environmental problems. In addition to making nanomaterials and products with less impact to the environment, Green Nanotechnology also means using nanotechnology to make current manufacturing processes for non-nano materials and products more environmentally friendly. For example, nanoscale membranes can help separate desired chemical reaction products from waste materials. Nanoscale catalysts can make chemical reactions more efficient and less wasteful. Sensors at the nanoscale can form a part of process control systems, working with nano-enabled information systems. Using alternative energy systems, made possible by nanotechnology, is another way to "green" manufacturing processes.The second goal of Green Nanotechnology involves developing products that benefit the environment either directly or indirectly. Nanomaterials or products directly can clean hazardous waste sites, desalinate water, treat pollutants, or sense and monitor environmental pollutants. Indirectly, lightweight nanocomposites for automobiles and other means of transportation could save fuel and reduce materials used for production; nanotechnologyenabled fuel cells and light-emitting diodes (LEDs) could reduce pollution from energy generation and help conserve fossil fuels; self-cleaning nanoscale surface coatings could reduce or eliminate many cleaning chemicals; and enhanced battery life could lead to less material use and less waste. Green Nanotechnology takes a broad systems view of nanomaterials and products, ensuring that unforeseen consequences are minimized and that impacts are anticipated throughout the full life cycle. Therefore, the editors feel that it's a right time to bring a special issue on