In this study, the angle-resolved photoluminescence and reflection spectra from colloidal quantum dots on materials with low-refractive-index/high-refractive-index structure at room temperature are investigated. The photoluminescence spectra for the materials split into two main spectral peaks at various angles. Different kinds of dielectric materials and different thicknesses are used to verify the PL spectral splitting phenomena. By comparing the PL spectrum and RL spectrum of dielectric materials on substrates with different refractive indexes, the PL spectral splitting is attributed to strong coupling between the quantum dots exciton and asymmetric F–P cavity formed in the low-refractive-index/high-refractive-index material. The loss of the F–P mode decreases due to the destructive interference effect.

在这项研究中，研究了室温下低折射率/高折射率结构材料上胶体量子点的角分辨光致发光和反射光谱。该材料的光致发光光谱在不同角度分裂成两个主要光谱峰。使用不同种类的介电材料和不同的厚度来验证PL光谱分裂现象。通过比较不同折射率衬底上介电材料的PL光谱和RL光谱，PL光谱分裂归因于量子点激子与低折射率/高折射率衬底中形成的不对称F-P腔之间的强耦合。 -索引材料。由于相消干涉效应，F-P 模式的损耗减少。