Fabrication of High-Efficiency Organic Photovoltaic Devices by Control of Molecular Orientation on Chemically-Modified Graphene

高效太阳能电池作为下一代的能源，是科学界面临的最大挑战之一。我们成功地在聚合物衬底上成功地诱导了有机半导体四苯并卟啉的纳米柱状形貌，表面涂覆了一层单原子厚度的溶液处理的石墨化材料。分散的石墨片使我们能够形成均匀分散的纳米柱结构，这可以用来提高有机光伏器件的电流密度。

Development of high-efficiency solar cells is one of the most important challenges in science as energy source for the next generation. We succeeded in induction of nanocolumnar morphology of tetrabenzoporphyrin, an organic semiconductor, on a polymer substrate coated with a solution-processed graphitic material having one-atom thickness. Dispersed graphitic flakes enabled us to form uniformly dispersed nanocolumnar structure, which can be utilized for increasing current density in organic photovoltaic devices.