课题组

武四新 WU SX

课题组简介

课题组名称：光电功能材料以及太阳能薄膜电池

该课题主要从事光电功能的设计、制备及光伏性能的研究，希望能改善太阳能薄膜电池的转换效率。铜铟硒作为太阳能薄膜电池材料，有其本身独特的优势，如吸光系数稿，波长与太阳能电池的最佳禁带宽度，使用寿命长等，另外，最意外的性能是其多晶材料的光电转换效率比单晶材料要明显高的多。但对其原因尚没有最终的合理解释，但对该现象的解释是进一步提高其转换效率的关键我们将通过几种方法，希望提高太阳能薄膜电池的转换效率，同时，对多晶铜铟硒材料高转换效率的认识希望通过实验来解释。

截止目前，本课题组已承担了各类项目10余项，其中，包括，国家自然科学基金、教育部新世纪优秀人才支持计划、教育部科学技术重点项目、人事部归国留学人员择优支持计划项目、河南省科技厅基础与前沿重点项目、河南省高校知识创新工程支持计划等。在国内外发表学术论文30余篇。

Introduction

The Wu research group is interested in the design, fabrication of nanoscale photoelectrical functional materials, with an emphasis on the photovoltaic application in solar cell.

Photovoltaic solar cells and other optoelectronic devices often necessitate the use of single-crystalline active materials, because the analogous, low-cost polycrystalline substances tend to exhibit poor carrier transport. A polycrystalline material is made of small crystallites joined at their surfaces via grain boundaries. A notable exception is polycrystalline CuInSe2 solar cells, where today’s cell efﬁciencies (20%) outperform the best single-crystal devices (13%). This puzzle in polycrystalline CuInSe2 and related polycrystalline materials attracted recently considerable attention, because the understanding of the natural GB passivity in ternary chalcopyrites could lead in the future to the deliberate design of optoelectronic devices based on many low-cost polycrystalline materials.

Up to date, there are more than 10 research projects are undertaken in Wu research group, including those from the National Natural Science Foundation of China (NSFC), the program for the New Century Excellent Talents in University, Science and Technology Focus Item of the Ministry of Education of China, Henan Project for University Prominent Research Talents (HAIPURT). There are more than 30 academic papers from the group published in the international and domestic core journals.