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졸겔 스핀코팅 방법으로 제작된 ZnO 박막에서 Li 원자들이 물성에 미치는 영향
김영규 ( Young Gyu Kim ),박형길 ( Hyung Gil Park ),지익수 ( Ik Soo Ji ),김소아람 ( So A Ram Kim ),김종수 ( Jong Su Kim ),김진수 ( Jin Soo Kim ),김양수 ( Yang Soo Kim ),임재영 ( Jae Young Leem ) 대한금속재료학회(구 대한금속학회) 2014 대한금속·재료학회지 Vol.52 No.5
Undoped and Li-doped ZnO(LZO) thin films were grown on quartz substrates by a sol-gel spin- coating method. The effects of Li contents on the structural and optical properties of the ZnO thin flims were investigated by X-ray diffraction (XRD), photoluminescence (PL), and ultraviolet-visible spectrophotometer. In the XRD investigation, undoped and LZO thin films had a wurtzite structure and high c-axis orientation. The intensity and the full width at half maximum (FWHM) of the (002) peak for LZO was the largest and smallest at 2.5 at%, which indicate that the LZO thin film is the most crystalline at 2.5 at%. In the PL investigation, the near band edge emissions of the LZO thin films were blue-shifted and the FWHM of the LZO thin films decreased with increasing Li doping concentrations.