Two-dimensional high efficiency thin-film silicon solar cells with a lateral light trapping architecture

作者：Fang, Jia; Liu, Bofei; Zhao, Ying; Zhang, Xiaodan^*

来源：Scientific Reports, 2014, 4(1): 6169.

DOI：10.1038/srep06169

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Introducing light trapping structures into thin-film solar cells has the potential to enhance their solar energy harvesting as well as the performance of the cells; however, current strategies have been focused mainly on harvesting photons without considering the light re-escaping from cells in two-dimensional scales. The lateral out-coupled solar energy loss from the marginal areas of cells has reduced the electrical yield indeed. We therefore herein propose a lateral light trapping structure (LLTS) as a means of improving the light-harvesting capacity and performance of cells, achieving a 13.07% initial efficiency and greatly improved current output of a-Si:H single-junction solar cell based on this architecture. Given the unique transparency characteristics of thin-film solar cells, this proposed architecture has great potential for integration into the windows of buildings, microelectronics and other applications requiring transparent components.

• 出版日期2014-8-22
• 单位南开大学