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采用自发成核方法,以KOH碱液作助熔剂,在银、镍和铁坩埚中分别生长了透明、棕绿色和棕色的纤维锌矿氧化锌单晶。X射线衍射和电感耦合等离子体原子发射光谱分析表明:晶体的颜色与所含的杂质有关,这些杂质来源于所使用的坩埚。采用光致发光(photoluminescence,PL)光谱对所生长的晶体进行了表征,结果显示,从银坩埚中生长的氧化锌晶体质量较高,其室温下用325nm波长光激发的PL光谱显示381nm强的紫外发射峰。在此基础上,从200mL银坩埚中生长出了尺寸为φ3mm×34mm氧化锌晶体。
Using a spontaneous nucleation method, KOH lye as a flux, respectively, in the silver, nickel and iron crucible were grown transparent, brown-green and brown wurtzite zinc oxide single crystal. X-ray diffraction and inductively coupled plasma atomic emission spectrometry showed that the color of the crystal was related to the impurities contained, which originated from the crucible used. The grown crystals were characterized by photoluminescence (PL) spectroscopy. The results show that the crystal of zinc oxide grown from a silver crucible has a higher mass. The PL spectrum excited by 325 nm light at room temperature shows a strong 381 nm UV emission peak. On this basis, zinc oxide crystals having a size of φ3 mm × 34 mm were grown from a 200 mL silver crucible.