The mechanisms of photoluminescence are introduced, including quantum confinement effect, the defect related oxygen, quantum confinement effect/luminescence center and excition effect model.

• 并且介绍了单元素半导体量子点的发光机理模型，包括量子限制效应模型、与氧有关的缺陷发光、量子限制效应发光中心复合发光和界面层中的激子效应发光等；