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黑色超薄晶体晶片达到4n2的吸收极限-适用于IBC太阳能电池

M Garín^1,2, T P Pasanen³, G López¹

¹Universitat Politècnica de Catalunya, Carrer del Gran Capità, Barcelona, 08034, Spain.

Small (Weinheim an der Bergstrasse, Germany)

|June 1, 2023

概括

先进的黑色纳米纹理使得超薄的晶片中理想的光捕获,显著提高太阳能电池的效率. 这一突破解决了开发具有成本效益,高性能薄膜光伏的关键挑战.

科学领域:

材料科学材料科学材料科学
可再生能源可再生能源是可再生能源.
纳米技术纳米技术

背景情况:

降低基板厚度对于降低晶光伏的成本至关重要.
在薄晶片中保持高光吸收是有效的太阳能转换的重大挑战.

研究的目的:

用黑色纳米纹理在超薄的晶片中展示理想的光捕获.
为了研究黑的潜力,以提高薄型互指背接触式太阳能电池的性能.

主要方法:

通过深度反应离子蚀刻 (DRIE) 应用最先进的黑纳米纹理.
使用反射器来增强在10微米薄的晶圆中捕捉光的效果.
制造和测试与黑接触的薄型交叉式背接式太阳能电池.

主要成果:

在厚度为40,20和10微米的晶片中达到最大的理论吸收率 (4n2极限).
展示了一种概念验证太阳能电池,效率为16.4%,短路电流密度为35mA/cm2.
与参考抛光电池相比,输出功率有43%的改善.

结论:

黑色纳米纹理对于在极薄的晶片中实现理想的光捕获非常有效.
这项技术对超薄光伏的未来具有重大潜力,可实现更高的效率和减少材料使用.

关键词:

雅布洛诺维奇的4n2限制了这个问题.黑色的黑色的.跨数字的背部接触 (IBC)兰伯蒂安的灯光捕捉超薄太阳能电池是一种超薄的太阳能电池.

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