کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6457155 | 1420660 | 2017 | 6 صفحه PDF | دانلود رایگان |
- SiOx:H p- and n-layers are used in high-efficiency thin-film a-SiGe:H solar cells.
- Sole use of SiOx:H as doped layers offers great versatility for light management.
- Bandgap grading of n-SiOx:H smoothens the transportation barrier at i-n interface.
- Comparable cell performance can be achieved without the use of buffer layers.
- Better light scattering and in-coupling are applied for the optimal cell structure.
Mixed-phase hydrogenated silicon oxide (SiOx:H) is applied to thin-film hydrogenated amorphous silicon germanium (a-SiGe:H) solar cells serving as both p-doped and n-doped layers. The bandgap of p-SiOx:H is adjusted to achieve a highly-transparent window layer while also providing a strong electric field. Bandgap grading of n-SiOx:H is designed to obtain a smooth transition of the energy band edge from the intrinsic to n-doped layer, without the need of an amorphous buffer layer. With the optimized optical and electrical structure, a high conversion efficiency of 9.41% has been achieved. Having eliminated other doped materials without sacrificing performance, the sole use of SiOx:H in the doped layers of a-SiGe:H cells opens up great flexibility in the design of high-efficiency multi-junction thin-film silicon-based solar cells.
Journal: Solar Energy Materials and Solar Cells - Volume 163, April 2017, Pages 9-14