Experimental studies and limitations of the light trapping and optical losses in microcrystalline silicon solar cells
- 作者：Michael Berginski ; Jü ; rgen Hü ; pkes ; Aad Gordijn ; Wilfried Reetz ; Timo Wä ; tjen ; Bernd Rech ; Matthias Wuttig
- 关键词：Thin-film silicon solar cells ; Light trapping ; Optical losses ; Quantum efficiency ; Limitations
- 刊名：Solar Energy Materials and Solar Cells
- 出版年：2008
- 期刊代码：81_09270248
- 类别：ce
- 出版时间：September 2008
- 卷：92
- 期：9
- 页码：1037-1042
- 文件大小：831 K
摘要
This study addresses the potential of different approaches to improve the generated current in silicon thin-film solar cells and modules. Decreasing the carrier concentration in the front contact has proven to increase the quantum efficiency and the cell-current density significantly. Additionally, an optically improved ZnO/Ag back reflector and the optimized light incoupling by anti-reflection layers were studied. In this contribution, we show the potential of the different optical components and discuss combinations thereof in order to obtain a maximized cell-current density in silicon thin-film solar cells. Limitations of the cell-current density are discussed with respect to theoretical calculations.