Permeation barrier films are critical to a wide range of applications. In particular, for organic electronics and photovoltaics not only ultra-low permeation values are required but also optical transparency. A laminate structure thereby allows synergistic effects between different materials. Here, we report on a combination of chemical vapor deposition (CVD) and atomic layer deposition (ALD) to create in scalable fashion few-layer graphene/aluminium oxide-based nanolaminates. The resulting ~10 nm contiguous, flexible graphene-based films are >90% optically transparent and show water vapor transmission rates below 7 × 10⁻³ g/m²/day measured over areas of 5 × 5 cm². We deploy these films to provide effective encapsulation for organic light-emitting diodes (OLEDs) with measured half-life times of 880 h in ambient.

渗透阻隔膜对于广泛的应用至关重要。特别是对于有机电子产品和光伏产品，不仅需要超低的渗透率，而且还需要光学透明性。因此，层压结构允许不同材料之间的协同作用。在这里，我们报告化学气相沉积（CVD）和原子层沉积（ALD）的组合，以可扩展的方式创建基于石墨烯/氧化铝的纳米层。所得的约10 nm连续的，基于石墨烯的柔性薄膜具有> 90％的光学透明性，在5×5 cm ^2的面积上测得的水蒸气透过率低于7×10 ^-3  g / m ² / day。我们部署了这些薄膜，以提供对有机发光二极管（OLED）的有效封装，在环境中测得的半衰期为880小时。