设计的光伏电池和LED坚固的电网遮损失排放的设计
Jasper van Gastel1, Pyry Kivisaari2, Jani Oksanen2
1Radboud University, Institute for Molecules and Materials, Applied Materials Science, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands.
概括
太阳能电网的设计非线性地影响光线提取效率. 优化光学特性,而不仅仅是覆盖范围,可以显著提高性能,减少太阳能电池的损失.
科学领域:
- 太阳能光伏发电是如何实现的
- 光电学是指光电子产品.
- 材料科学 材料科学 材料科学
背景情况:
- 标准的光伏模型假设电网覆盖面对效率的线性影响.
- 电网的光学特性往往是电阻和覆盖率的次要因素.
- 现有的假设可能会低估或错误计算由于电网设计造成的效率损失.
研究的目的:
- 通过数值研究电网覆盖率与光提取效率之间的非线性关系.
- 分析电网光学特性对排放和吸收的影响.
- 展示如何优化网格设计可以提高薄膜光伏电池的光提取效率.
主要方法:
- 300nm GaAs发光二极管 (LED) 结构的数值模拟.
- 基于光网光学特性 (损光与反射) 的光捕捉和提取的分析.
- 评估不同电网覆盖率 (例如10%) 的效率变化.
主要成果:
- 光提取效率随着电网覆盖而非线性地变化,这与线性假设相反.
- 光学损耗电网导致的排放损失大于线性.
- 具有有效光吸收方案的光学反射电网提高了对电网损失的稳定性.
结论:
- 电网设计,特别是它的光学特征,极大地影响了光伏效率.
- 网格和后面镜子的精心设计可以将效率降低到10%的覆盖率下降到<4%.
- 低于最佳的设计可以在10%的电网覆盖率下减少>35%的效率,这突显了光学考虑的重要性.
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