等离子体增强型硅基肖特基太阳电池的研究

项目名称： 等离子体增强型硅基肖特基太阳电池的研究

项目编号： No.61306075

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 吕佩文

作者单位： 中国科学院福建物质结构研究所

项目金额： 25万元

中文摘要： 实现更低的每峰瓦成本是太阳电池实用化的关键。本项目提出结合晶硅电池效率高、性能稳定和薄膜电池成本低、结构简单的优点，发展新型的等离子激元增强型硅基肖特基太阳电池。该电池结构是在传统的硅基肖特基太阳电池的基础上，通过引入表面等离子激元增强电池对光的吸收，研究提高电池效率的方法。项目创新性地将肖特基势垒太阳电池结构中用于形成肖特基势垒的金属转变为纳米金属颗粒表面等离子激元，在形成肖特基势垒的同时产生等离子体效应。利用等离子体效应实现"光厚电薄"的目的，解决非直接带隙的晶硅材料中光子吸收及光生电荷载子收集无法兼顾的矛盾。通过构筑简单的等离子激元--肖特基势垒一体化的体系，研究金属纳米结构对肖特基势垒电池效率的影响，以及表面/界面复合机制、钝化及其对载流子输运性质的影响，探索硅基电池的新结构与新思路。

中文关键词： 硅；等离子体；太阳电池；肖特基；薄膜

英文摘要： It is important to achieve a cost per peak watt as low as possible for solar cells. The project aims at developing a new type of plasmon enhanced silicon-based schottky-barrier solar cell, which is supposed to combine the advantage of crystalline silicon cell as high efficiency, stable performance and the advantage of thin film solar cell as low cost, simple structure. The innovation of the project is transforming the metal layer to metal nanoparticle with different nanostructures in the schottky-barrier solar cell. The nanostruture of metal generate the plasmon while form the schottky barrier in the cell structure. Plasmon is introduced to resolve the confilct of photon absorption and the collection of photo-generated charge carriers in the non-direct bandgap materials, and achieve the goal of "optical thick and electric thin". By constructing a plasmon - schottky barrier integration system, we study the relationship of metal nanostructure and cell efficiency. And the surface/interface recombination mechanism, passivation and the carrier transportion properties were studied too. We expect to exploer new concept and new structure of silicon-based solar cell.

英文关键词： silicon；plamon；solar cell；Schottky；film