Burresi Matteo, Pratesi Filippo, Vynck Kevin, Prasciolu Mauro, Tormen Massimo, Wiersma Diederik S
European Laboratory for Non-linear Spectroscopy, Via N Carrara 1, 50019 Sesto Fiorentino, Firenze, Italy.
Opt Express. 2013 Mar 11;21 Suppl 2:A268-75. doi: 10.1364/OE.21.00A268.
The surface of thin-film solar cells can be tailored with photonic nanostructures to allow light trapping in the absorbing medium. This in turn increases the optical thickness of the film and thus enhances their absorption. Such a coherent light trapping is generally accomplished with deterministic photonic architectures. Here, we experimentally explore the use of a different nanostructure, a disordered one, for this purpose. We show that the disorder-induced modes in the film allow improvements in the absorption over a broad range of frequencies and impinging angles.
薄膜太阳能电池的表面可以用光子纳米结构进行定制，以实现光在吸收介质中的捕获。这进而增加了薄膜的光学厚度，从而提高了它们的吸收率。这种相干光捕获通常通过确定性光子结构来实现。在此，我们通过实验探索使用一种不同的纳米结构，即无序纳米结构来实现这一目的。我们表明，薄膜中由无序诱导的模式能够在很宽的频率范围和入射角范围内提高吸收率。
