Department of Chemistry, National Taiwan University, Taipei 106, Taiwan.
Hsin Yu Screw Enterprise Co., Ltd., Taichung 411, Taiwan.
ACS Appl Mater Interfaces. 2023 Jul 12;15(27):32589-32596. doi: 10.1021/acsami.3c06454. Epub 2023 Jun 26.
The rapid change in population, environment, and climate is accompanied by the food crisis. As a new type of farming, indoor agriculture opens the possibility of addressing this crisis in the future. In this study, a phosphor-converted light-emitting diode (pc-LED), as energy-saving lighting for indoor agriculture, was used to evaluate the response and effect on the growth of . Red phosphors, SrLiAlN:Eu (SLA) and CaAlSiN:Eu (CASN), were characterized and analyzed with crystal structure, morphology, and optical properties. Eu-doped phosphors provided the red emission of around 650 nm which is highly matched with the absorption of chlorophyll. Under the same luminescence intensity, broader emission of CASN pc-LED demonstrated a 100% increase of photosynthetically active photon flux density and 130% promotion of plant weight than the SLA pc-LED, which reflected the positive result of the carbon fixation. The chlorophyll and nitrate responses have also revealed the effect of broader red light on indoor agriculture.
人口、环境和气候的快速变化伴随着粮食危机。作为一种新型农业，室内农业为未来解决这一危机提供了可能。在这项研究中，磷光转换发光二极管（pc-LED）作为室内农业的节能照明，用于评估对生长的响应和影响。红色荧光粉 SrLiAlN:Eu（SLA）和 CaAlSiN:Eu（CASN）的晶体结构、形貌和光学性能进行了表征和分析。Eu 掺杂荧光粉提供了约 650nm 的红色发射，与叶绿素的吸收高度匹配。在相同的发光强度下，CASN pc-LED 的更宽发射显示出光合有效光子通量密度增加 100%，植物重量增加 130%，这反映了固碳的积极结果。叶绿素和硝酸盐的响应也揭示了更宽的红光对室内农业的影响。
