Opt Lett. 2019 Oct 1;44(19):4757-4760. doi: 10.1364/OL.44.004757.
In this Letter, we report the broadband photoluminescence of lead-free double perovskite CsNaAgInBiCl:Mn. Under ultraviolet excitation, the white phosphor shows two emission peaks at 550 nm and 610 nm from self-trapped exciton and doped Mn ions, respectively, leading to a broad emission spectrum over the whole visible spectrum suitable for lighting application. The white-light-emitting diodes exhibit high light quality with CIE coordinates (0.38, 0.42) and color rendering index of 82.6. The mechanism of luminescence of this double perovskite is also discussed in this Letter.
在这封信件中，我们报告了无铅双钙钛矿 CsNaAgInBiCl:Mn 的宽带光致发光。在紫外光激发下，白色荧光粉分别在 550nm 和 610nm 处显示出自陷激子和掺杂 Mn 离子的两个发射峰，导致整个可见光谱的宽发射光谱适用于照明应用。白光发光二极管具有高的光质量，CIE 坐标为（0.38，0.42），显色指数为 82.6。在这封信中，我们还讨论了这种双钙钛矿的发光机制。
