肖特基型GaAs纳米线在电场中的定向排布规律研究

项目名称： 肖特基型GaAs纳米线在电场中的定向排布规律研究

项目编号： No.61504151

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 韩宁

作者单位： 中国科学院过程工程研究所

项目金额： 22万元

中文摘要： 柔性太阳能电池在未来可穿戴及便携式电源领域具有广阔的应用前景，然而材料自身化学稳定性及弯曲过程中的机械稳定性是限制其应用的关键问题之一。针对此问题，本研究采用自身稳定的无机GaAs光伏材料，通过将其制作成纳米线阵列薄膜的方式提高机械稳定性。主要采用固态源化学气相沉积技术在非晶基底上合成GaAs纳米线材料，调控纳米线与诱导其生长的金属催化剂之间肖特基接触势垒的高低，探索极性肖特基型GaAs纳米线在电场中静电引力与色散力作用下的运动规律，通过电泳沉积的方法将其在柔性基底上按极性排列成高密度薄膜，并使用光刻工艺制作结构简单、稳定高效的肖特基型柔性光伏器件。本项目的相关研究成果不仅为柔性太阳能电池的制作提供新的技术途径，还将为电泳体系制作其他功能器件提供参考依据。

中文关键词： 柔性太阳能电池；稳定性；极性砷化镓纳米线；肖特基势垒；电泳沉积

英文摘要： The stability is one of the major challenges of flexible solar cells in the promising applications in the wearable and portable powers in the future. Dealing with this, this study plans to use the solid source chemical vapor deposition method to synthesize GaAs nanowires (NWs) with tunable Schottky contact barrier height with the metal catalyst seeds. Then, the kinetics of the polar GaAs NWs in electrophoretic system will be well investigated, aiming at aligning high density horizontal NW array thin films according to their polar direction by electrophoresis. And at last, the Schottky contacted solar cells will be easily fabricated by typical photolithography technology. Due to the high photon to electricity conversion efficiency of GaAs, and due to the anti-stress effect of the NWs in the deformation of flexible substrates, the NW array thin film with uniform polar direction is potential in applications in stable and high efficiency flexible photovotaics. The results of this project will not only help to develop another method for fabrication of stable flexible solar cells, but also provide a good example for the electrophoresis technology for other functional device fabrications.

英文关键词： Flexible solar cells;Stability;Polar GaAs nanowires;Schottky barrier;Electrophoresis