Cr3+离子掺杂YAG外延层(Cr3+:YAG)的发光呈宽带谱特征,荧光色度坐标为x=0.6551、y=0.2949,在CIE1931色度图上相当于主波长λ≈638nm的红色光,并且具有较高的色饱和度,其发光谱中引人注目之处还在于荧光主峰的位置均在波长较长的λmax≈689nm和709nm附近,是一种能够实现长波长(λ≈700nm)红色光输出的单晶荧光体,可用作非晶硅液晶光阀投影仪的高分辨率写入光源。

Cr 3+ ion doped YAG (Cr 3+ ∶YAG) layers grown by LPE is a newly developed single crystalline cathodoluminescent phosphor with a broad emission in red band. The maximum intensity of Cr 3+ emission in YAG is at λ max ≈689 nm, 709 nm with a color point of x=0 6551, y=0 2949, which is of the same chromaticity with a red emission of λ=638 nm. The abundant red components of Cr 3+ emission in the vicinity of λ≈700 nm give a deep impression, this made Cr 3+ ∶YAG of great value in the development of high resolution α Si∶H liquid crystal light valve projection display.