我们在0～31kbar的单轴应力下,看到在77K下NN_1线由一个峰分成为两个峰。在77K下,一般都没有观察到NN_2峰,我们通过单轴应力下的光致发光研究观察到NN_2线。实验样品是液相外延N型GaP,实验样品有两种(以下简称样品A和样品B),它们掺杂浓度不同,样品A长7.5mm,宽4.34mm,厚0.40mm,样品B长7.5mm宽4.34mm, Under uniaxial stress of 0 ~ 31kbar, we can see that the NN_1 line is divided into two peaks at 77K by one peak. At 77 K, NN 2 peaks were not observed generally, and NN 2 lines were observed by photoluminescence studies at uniaxial stress. The experimental samples are liquid phase epitaxial N-type GaP. There are two experimental samples (hereinafter referred to as sample A and sample B), which have different doping concentrations. Sample A is 7.5 mm long, 4.34 mm wide, 0.40 mm thick and sample B is 7.5 mm long Width 4.34mm,