The studies on electron spin resonance (EPR) spectra indicate that optical irradiation eliminated the dangling Y-O bonds in the surface.

• 首次对Y_2O_3纳米晶电子顺磁共振谱进行了研究，结果表明光辐照引起荧光增强原因与光辐照对钇的悬空键的消除有关。