Abstract The development of a smart sunlight window to promote plant growth without the need for fertilizer is of considerable interest in both materials science and biology. In particular, green light is considered as an inefficient wavelength in the solar spectrum for photosynthesis. In contrast, blue and far-red and near-infrared photons are preferable for plant growth. Here, we report on a smart window containing SrAl12O19: Ti3+ nanoparticles that are transparent in blue region of the solar spectrum but can selectively convert the less favorable green light to the most useful far-red and near-infrared light with respect to photosynthesis. When cultivated beneath such a smart window, plants, such as a garlic bolt and oxalis demonstrate remarkably improved longitudinal and lateral growth under direct outdoor sunlight or green and white LED room light. This method offers a simple way to maximize the use of solar energy for more effective plant cultivation without the need for fertilizer. In addition, such operable light converting nanoparticles may also lead to a wide variety of applications in the fields of biophotonics and photonics.

中文翻译：

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阳光可操作的光转换智能窗，促进无肥植物生长

摘要 开发无需施肥即可促进植物生长的智能阳光窗在材料科学和生物学领域都引起了极大的兴趣。特别是，绿光被认为是太阳光谱中光合作用效率低下的波长。相比之下，蓝色、远红色和近红外光子更适合植物生长。在这里，我们报告了一种包含 SrAl12O19：Ti3+ 纳米粒子的智能窗口，这些纳米粒子在太阳光谱的蓝色区域是透明的，但可以选择性地将不太有利的绿光转换为对光合作用最有用的远红光和近红外光。在如此智能的窗户下种植时，植物，在室外阳光直射或绿色和白色 LED 室内光下，例如大蒜螺栓和草酸显示出显着改善的纵向和横向生长。这种方法提供了一种简单的方法，可以最大限度地利用太阳能进行更有效的植物栽培，而无需施肥。此外，这种可操作的光转换纳米粒子还可以导致生物光子学和光子学领域的广泛应用。