Nanoscale structures for implementation of anti-reflection and self-cleaning functions

Inspired by nature, a number of techniques have been developed to fabricate the bionic structures of lotus leaves and moth eyes in order to realize the extraordinary functions of self-cleaning and antireflection. Compared with the existing technologies, we present a straightforward method to fabricate well-defined micro and nano artificial bio-structures in this work. The proposed method of direct laser interference nanomanufacturing (DLIN) takes a significant advantage of high efficiency as only a single technological procedure is needed without pretreatment, mask, and pattern transfer processes. Meanwhile, the corresponding structures show both antireflection and superhydrophobicity properties simultaneously. The developed four-beam nanosecond laser interference system configuring the TE-TE-TE-TE and TE-TE-TE-TM polarization modes was set up to generate periodic micro cone and hole structures with a huge number of nano features on the surface. The theoretical and experimental results have shown that the periodic microcone structure exhibits excellent properties with both a high contact angle (CA = 156.3°) and low omnidirectional reflectance (5.9–15.4%). Thus, DLIN is a novel and promising method suitable for mass production of self-cleaning and antireflection surface structures.

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Both antireflection and superhydrophobicity structures achieved by direct laser interference nanomanufacturing

Wang

Zhang

et al. 2014

Journal of Applied Physics

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Nanotechnology for Photovoltaic Cells and Energy Efficiency

Salvo¹

2015

JERA

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Abstract. The intent of this paper is to connect science and technology in order to demonstrate how, in the field of on photovoltaic technologies, thin film solar cells have been the focus of many research facilities in recent years that are working to decrease manufacturing costs and increase cell efficiency. New research suggests that it might be possible to add a nanoscopic relief pattern to the surface of solar cells that makes them non-reflective significantly boosting efficiency and at the same time making them highly non-stick and self-cleaning. The paper presents the challenges and approaches to engineer the active layer of the cell, in order to obtain cells made up of components assembled with precision on the nanometer scale and with such properties as to increase the yield of conversion of solar radiation into electricity.

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Nanoscale structures for implementation of anti-reflection and self-cleaning functions

Cited by 2 publications

References 16 publications

Both antireflection and superhydrophobicity structures achieved by direct laser interference nanomanufacturing

Both antireflection and superhydrophobicity structures achieved by direct laser interference nanomanufacturing

Nanotechnology for Photovoltaic Cells and Energy Efficiency

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