苯热条件下GaP纳米晶的稳定性

The Stability of GaP Nanocrystals under Benzene Thermal Conditions

用高温高压苯热合成方法制备了GaP纳米晶，用X射线衍射、光吸收谱及透射电子显微镜对所得样品进行了分析测试．结果表明，GaP纳米晶在苯热条件下是亚稳定态的，反应时间过长及反应温度过高均不利于它的生成和生长．文中还讨论了晶粒度分布与合成条件间的关系，并进行了理论上的定性分析．

GaP nanocrystals were synthesized by high temperature high pressure beuzene ther-inal synthesis method, the samples were charartrized by X-ray cliffraction,optical absorption and transmission election microscope. The results showed that GaP nanocrystals were metastable un-der benzene thermaJ conditions. The relationship between the size distriblltion and the synthesis conditiolis was also investigated iu this paper.