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arXiv 1012.1944cond-mat.mtrl-sci
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热载流子太阳能电池:在制作中?

Hot Carrier Solar Cells : In the Making ?

A. Le Bris, L. Lombez, Jean Francois Guillemoles, R. Esteban, M. Laroche, Jj. Greffet, G. Boissier, P. Christol, S. Collin, Jl. Pelouard, P. Aschehoug, F. Pellé

摘要:

热载流子太阳能电池允许在理想条件下接近于物理极限的潜在效率。然而,这种装置的可行性尚未明确说明,到目前为止,只有理想的细胞被认为是在以前的研究。在这里,我们开发了一个模型与现实的能量选择性接触,载流子热化和吸收率。在接触选择性方面的要求进行了研究,表明半选择性接触是不兼容的高效率。合成了吸波材料的候选材料,并获得了所需的热化性能。设计了特定的结构,以增强在小材料厚度中对集中的太阳光的吸收,从而允许吸收体中的高载流子密度。

英文摘要:

Hot carrier solar cells allow potential efficiency close to the thermodynamical limit in ideal conditions. However, the feasability of such devices has not been clearly stated so far and only ideal cells were considered in previous studies. Here we develop a model with realistic energy selective contacts, carrier thermalization and absorptivity. The requirements in term of contact selectivity is investigated, showing that semi-selective contacts are not incompatible with high efficiencies. Candidates for absorbing material were synthesized and the required thermalization properties are obtained. Specific structures were designed to enhance absorption of concentrated sunlight in a small material thickness, allowing high carrier density in the absorber.

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