[IEEE 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Munich, Germany (2019.6.23-2019.6.27)] 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Tailored Disorder for the Light Management in Photovoltaics
DOI:10.1109/cleoe-eqec.2019.8873414
出版年份:2019
更新时间:2025-09-16 10:30:52
摘要:
Light management in photovoltaics continues to be an important ingredient when working towards high efficiency devices. Various approaches have been perceived. Besides spectral modification, e.g. based on up- or down-conversion, the spatial and angular redistribution of light is important. For the latter aspect, on which we concentrate here, various supporting photonic structures were suggested, e.g. photonic crystals, metallic nanostructures, or textured interfaces. From a higher executive perspective we can categorize most structures as being either periodic or random. The emergence of such material classes is explained by the fabrication means. The Fourier spectrum, i.e. the angular distribution with which photonic modes can be excited from such structures beyond specific near-field effects is either discrete and wavelength sensitive or unspecific and spectrally flat. Both combinations are far from optimum when integrating them into photovoltaic devices. In this contribution we elaborate on the notion of a tailored disorder to improve the photon management. With tailored disorder we achieve hyperuniform interfaces. They are characterized by a suppressed variation in the feature density across the interface, like in a periodic structure, but at the same they offer the same properties when viewed from different directions. The hyperuniform interfaces we have in mind combine the benefits of the previously considered categories. Hyperuniform interfaces offer (a) a structured Fourier spectrum, (b) are rather wavelength insensitive, and (c) are subject to a deterministic design process.
作者:
Stefan Nanz,Aimi Abass,Evgeniia Slivina,Peter M. Piechulla,Alexander Sprafke,Ralf B. Wehrspohn,Carsten Rockstuhl