Humans can convert sunlight to electricity are proud, although plants convert sunlight to energy history is much longer than the human. Therefore, a team of scientists by copying surface structure of rose petals to create a film, this film can greatly increase the efficiency of solar cells . Of the advanced optical materials (Advanced Optical Materials) reported their findings.

The team of scientists from Germany, Karlsruhe Institute of technology (Karlsruhe Institute of Technology, referred to as KIT) and Baden-Württemberg Centre for solar energy and hydrogen research (Center for Solar Energy and Hydrogen Research Baden-W ü rttemberg). Their research began in the observation of optical properties of a large number of plant epidermal cells. The scientists were especially interested in is the outer layer of plants ability to absorb--rather than reflected light. They found that in the study of plants, rose petals in this regard to be the best.

Study KIT, rose petals in the electron microscope has a complex structure without the organization. This structure not only rose to absorb more light, also can form a strong color to attract insects for pollination.

After you selected the rose, they use silicon-based polymers under the structure of the outer petals, which made the the petals mould of the outer structure. Next, they give the mold transparent optical glue and UV curing.

Finally, they got the surface structure as transparent film and rose petals. This film on the existing solar cells, researchers have found that its vertical sunlight conversion rate was 12%. If exposure to sunlight from a sharp angle, raise or more visible.

In May, the scientists get solar cell efficiency record, Sun-power conversion rate is 34.5%. Solar utility would be enhanced.

However, the scientists still do not meet, they continue to study surface structure, object of study is similar to other photosensitive surface of the rose petals, hope for solar cell efficiency to go further.

人类为自己能将太阳光转换为电能感到自豪，不过，植物转换太阳光为能量的历史比人类要长得多。因此，一个科学家团队通过复制玫瑰花瓣表面结构创造了一种薄膜，这种薄膜能够显著提高太阳能电池的效率。《先进光学材料》（Advanced Optical Materials）的报道了他们的发现。

这个团队里的科学家来自德国卡尔斯鲁厄理工学院（Karlsruhe Institute of Technology，简称KIT）和巴登-符腾堡太阳能和氢研究中心（Center for Solar Energy and Hydrogen Research Baden-Württemberg）。他们的研究始于对大量植物表皮细胞光学性质的观察。这些科学家尤为感兴趣的是植物外层吸收——而不是反射光的能力。他们发现在被研究的植物中，玫瑰花瓣在这方面表现得最好。

据KIT的研究报告，玫瑰花瓣在电子显微镜下呈现一种无组织的复杂结构。这种结构不仅让玫瑰花能够吸收更多的光线，还能形成强烈的色彩吸引昆虫来授粉。

选定玫瑰之后，他们用硅基聚合物印下了花瓣外层的结构，由此制作出了花瓣外层结构的模具。接下来，他们给模具注入透明的光学胶水，再用紫外线进行固化。

最后，他们得到了和玫瑰花瓣表面结构一样的透明薄膜。将这种薄膜覆盖在现有的太阳能电池上，研究人员发现它对垂直照射的太阳光的转化率提升了12%。若太阳光从更锐利的角度照射，提升还更加明显。

今年5月，这些科学家得到了太阳能电池效率的新纪录，阳光-电能的转化率达到了34.5%。太阳能电池的实用性由此得到了提升。

不过这些科学家们仍不满足，他们现在继续研究无组织表面结构的作用，研究对象是类似玫瑰花瓣的其他光敏表面，希望为太阳能电池效率能够更进一步。