Abstract A series of Bi3+ and Mn4+ co-doped LaMg0.598Nb0.402O3 (LMNO) phosphors via a conventional high-temperature solid-state reaction. Typically, LMNO: Bi3+ shows blue emission with a peak at 450 nm under 315 nm excitation. Upon excitation at 330 nm, Bi3+ and Mn4+ co-doped LMNO phosphors present dual emission, where the blue emission is mainly from the 3P1 → 1S0 transition of Bi3+ and the red emission is attributed to the 2E → 4A2 transition of Mn4+. The red emission of the Mn4+ ions could be enhanced three times via Bi3+→Mn4+ energy transfer compared to the non-codoped samples. The relative intensities of blue emission and red emission can be easily controlled by changing the concentrations of Bi3+ and Mn4+ ions. Therefore, the emission spectra can match well with the absorption of four dominating pigments in plants. These results indicate LMNO: Bi3+, Mn4+ phosphors have potential applications in agricultural fields for promoting plant growth.

中文翻译：

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Bi3+ 和 Mn4+ 共掺杂 LaMg0.598Nb0​​.402O3 双钙钛矿的可调谐双发射通过能量转移用于植物生长照明

摘要 通过常规高温固相反应制备了一系列 Bi3+ 和 Mn4+ 共掺杂的 LaMg0.598Nb0​​.402O3 (LMNO) 荧光粉。通常，LMNO: Bi3+ 在 315 nm 激发下显示蓝色发射，峰值位于 450 nm。在 330 nm 激发时，Bi3+ 和 Mn4+ 共掺杂 LMNO 荧光粉呈现双发射，其中蓝色发射主要来自 Bi3+ 的 3P1 → 1S0 跃迁，红色发射归因于 Mn4+ 的 2E → 4A2 跃迁。与非共掺杂样品相比，Mn4+ 离子的红色发射可以通过 Bi3+→Mn4+ 能量转移增强三倍。通过改变 Bi3+ 和 Mn4+ 离子的浓度可以很容易地控制蓝色发射和红色发射的相对强度。因此，发射光谱可以很好地匹配植物中四种主要色素的吸收。