基于光栅结构薄膜太阳能电池吸收层结构设计和优化
发布时间：2018-11-13 13:34
【摘要】：设计了一种具有光栅结构砷化镓吸收层的薄膜太阳能电池,利用严格耦合波方法分析了矩形光栅和双层矩形光栅结构砷化镓吸收层在280~900nm入射波长范围内的吸收效率.分析表明:在吸收层厚度一定的条件下,矩形光栅结构相比于平坦形吸收层的吸收率有较大提高;双层矩形光栅吸收效果更为明显,其对可见光的吸收率在较大波长范围内比单层矩形光栅提高了至少10%,比平坦形提高了至少20%.可见通过结构设计,光子在光栅内随机反射增加了光在吸收层的作用时间和距离,增强了吸收层对光的吸收率,进而提高薄膜太阳能电池的光电转换效率.
[Abstract]:A kind of thin film solar cell with grating structure gallium arsenide absorption layer is designed. The absorption efficiency of rectangular grating and double rectangular grating structure GaAs absorption layer in the range of 280~900nm incident wavelength is analyzed by strict coupling wave method. The results show that the absorptivity of the rectangular grating structure is much higher than that of the flat absorption layer under the condition of a certain thickness of the absorption layer. The absorption efficiency of the double rectangular grating is more obvious than that of the single-layer rectangular grating. The absorptivity of the visible light is increased by at least 10% in the larger wavelength range than in the single layer rectangular grating, and 20% higher than that in the flat shape. It can be seen that the random reflection of photons in the grating increases the time and distance of the light acting in the absorption layer, enhances the absorption rate of the absorption layer, and improves the photoelectric conversion efficiency of the thin film solar cells.
【作者单位】： 郑州大学信息工程学院河南省激光与光电信息技术重点实验室;
【基金】：国家自然科学基金(No.11104251)资助
【分类号】：TM914.42
[Abstract]:A kind of thin film solar cell with grating structure gallium arsenide absorption layer is designed. The absorption efficiency of rectangular grating and double rectangular grating structure GaAs absorption layer in the range of 280~900nm incident wavelength is analyzed by strict coupling wave method. The results show that the absorptivity of the rectangular grating structure is much higher than that of the flat absorption layer under the condition of a certain thickness of the absorption layer. The absorption efficiency of the double rectangular grating is more obvious than that of the single-layer rectangular grating. The absorptivity of the visible light is increased by at least 10% in the larger wavelength range than in the single layer rectangular grating, and 20% higher than that in the flat shape. It can be seen that the random reflection of photons in the grating increases the time and distance of the light acting in the absorption layer, enhances the absorption rate of the absorption layer, and improves the photoelectric conversion efficiency of the thin film solar cells.
【作者单位】： 郑州大学信息工程学院河南省激光与光电信息技术重点实验室;
【基金】：国家自然科学基金(No.11104251)资助
【分类号】：TM914.42
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相关期刊论文 前1条
1 沈宏君;卢辉东;程学珍;;一维衍射光栅和一维光子晶体组成的硅薄膜太阳能电池背反射器[J];发光学报;2012年06期
【共引文献】
相关期刊论文 前5条
1 沈宏君;张瑞;卢辉东;;一种增加光吸收的非晶硅薄膜太阳能电池的设计[J];发光学报;2013年06期
2 郝宇;孙晓红;孙q，
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