Green photosynthetic pigments play a major role in light-harvesting for biological substances and bio-mimetic strategy will provide a structural or functional model for natural antenna system. But the precise supramolecular structure of chlorosome has still not been clearly identified and the simulation of its function with new alternatives will be a real challenge. It has been well accepted that blue and far-red light are responsible for photosynthesis and photomorphogenesis in the process of plant growth. In this work, a series of single-composition LiLa₂SbO₆ (abbreviated as LLSO): xBi³⁺, yMg²⁺, zMn⁴⁺ phosphors with double perovskite‐type structure and the evaluation as blue and far-red dual-emission light for plant growth light-emitting diodes (LEDs) have been reported via a high-temperature solid-state reaction method. Under near ultraviolet-light (n-UV) excitation at 355 nm, intense blue emission (ranging from 360 to 500 nm, ³P₁ → ¹S₀) from Bi³⁺ and far-red emission (650–750 nm, ²E_g → ⁴A_2g) from Mn⁴⁺ are found in Bi³⁺-Mn⁴⁺ co-activated LLSO phosphors. To further optimize the photophysical properties, smaller Mg²⁺ has been incorporated into Li ⁺ site in Bi³⁺-doped LLSO phosphor to control blue emission of Bi³⁺. With the increase of Mg²⁺ content, an obvious red shift (~15 nm) of Bi³⁺ emission band has been detected in the blue region, which is almost overlapped with the absorbance of Chlorophyll-B (around 450 nm). Moreover, the photoluminescence (PL) emission intensity and decay lifetime of Bi³⁺ can be improved by substituting Mg²⁺ for Li⁺. These changes should be attributed to the combined effects of the crystal field splitting and the superior lattice rigidity. Finally, the temperature-dependent PL spectra of the composition-optimized phosphor are measured, and the excellent thermal-stable emission (up to 473 K) has been obtained. It has been observed that Bi³⁺ blue emission and Mn⁴⁺ far-red emission exhibit different temperature quenching effect and such phosphor can be considered as an ideal candidate in optical thermometry.

绿色光合色素在生物物质的光捕获中起主要作用，仿生策略将为天然天线系统提供结构或功能模型。但是仍然没有清楚地确定氯体的精确超分子结构，用新的替代品模拟其功能将是一个真正的挑战。众所周知，蓝光和远红光负责植物生长过程中的光合作用和光形态建成。在这项工作中，一系列单一成分的LiLa ₂ SbO ₆ (简称LLSO): x Bi ³⁺ , y Mg ²⁺ , z Mn ⁴⁺已经通过高温固相反应方法报道了具有双钙钛矿型结构的磷光体以及用于植物生长发光二极管 (LED) 的蓝色和远红色双发射光的评估。在355 nm 的近紫外光 ( n -UV) 激发下，Bi ³⁺发出强烈的蓝色发射（范围从 360 到 500 nm，³ P ₁ → ¹ S ₀）和远红色发射（650–750 nm，² E _g → ⁴ A _2g ) 来自 Mn ⁴⁺存在于 Bi ³⁺ -Mn ⁴⁺共激活 LLSO 荧光粉。为了进一步优化光物理特性， 在 Bi ³⁺掺杂的 LLSO 荧光粉的Li ⁺位点中加入了 较小的 Mg ²⁺以控制 Bi ^{3+ 的}蓝色发射。随着Mg ²⁺含量的增加，在蓝色区域检测到Bi ³⁺发射带的明显红移（~15 nm），几乎与叶绿素B的吸光度（约450 nm）重叠。此外，通过用 Mg ²⁺代替 Li ⁺可以提高Bi ³⁺的光致发光（PL）发射强度和衰减寿命。. 这些变化应归因于晶体场分裂和优异的晶格刚度的综合影响。最后，测量了成分优化的磷光体的温度相关 PL 光谱，并获得了优异的热稳定发射（高达 473 K）。已经观察到Bi ³⁺蓝光发射和Mn ⁴⁺远红光发射表现出不同的温度猝灭效应，这种荧光粉可以被认为是光学测温中的理想候选者。