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网格不匹配和扭曲的多层材料用于高效的太阳能电池

Efstratios Manousakis¹

¹Department of Physics, Florida State University, Tallahassee, FL 32306-4350, United States of America.

Journal of physics. Condensed matter : an Institute of Physics journal

|January 17, 2025

概括

原子薄的分层材料提供了增强的太阳吸收. 使用这些结构的新型太阳能电池设计通过冲击电离,特别是在缩的阳光下,显著提高了效率.

科学领域:

材料科学材料科学材料科学
凝聚物质物理学凝聚物质物理学
太阳能光伏发电是如何实现的

背景情况:

散装材料在广谱太阳吸收方面存在局限性.
不匹配或扭曲的原子薄层的交替层结构具有独特的电子特性.

研究的目的:

为了研究交替层结构的光伏效率.
基于带分割迷你带和迷你间隙来建模太阳能电池.

主要方法:

扩展了Shockley-Queisser方法用于光伏效率计算.
模拟带结构与迷你带 (带宽 ΔE) 和迷你间隙 (δG).

主要成果:

由于冲击电离,观察到显著的效率提升.
效率在小,非零小间隙 (δG) 的极限上显著增加.
在完全集中的阳光下显著提高效率.

结论:

交替层结构比散装材料更有效地吸收太阳能.
这些工程带结构中的冲击电离会提高光伏的性能.
优化的分层材料对先进的太阳能电池技术具有前途.

关键词:

冲击电离化的影响.格子不匹配的情况太阳能电池是太阳能电池中的一个.扭曲的层结构结构是扭曲的层结构.

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