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中文摘要：
用脉冲激光沉积（PLD）技术制备了ZnO/SiC/Si和ZnO/Si薄膜并制成了紫外探测器。利用X射线衍射（XRD）,光致发光（PL）谱,I-V曲线和光电响应谱对薄膜的结构和光电性能进行了研究。实验结果表明：SiC缓冲层改善了ZnO薄膜的结晶质量和光电性能,其原因可能是SiC作为柔性衬底能够减少ZnO与Si之间大的晶格失配和热失配导致的界面缺陷和界面态。
英文摘要：
The films of ZnO/SiC/Si and ZnO/Si were grown by pulsed-laser-deposition （PLD） technique and were processed to fabricate ultraviolet （UV） detectors. The effects of SiC buffer layer on the structure and photoelectrical properties of ZnO films grown on Si （ 111 ） substrates were investigated by the X-ray diffraction （XRD）, photoluminescence （PL）, current-voltage （l-V） and photoelectrical response measurements. The results showed that the SiC buffer layer can effectively improve the crystalline qualities, optical and photoelectrical properties of the ZnO thin film grown on Si substrate. It is obvious that, as a compliant substrate, SiC buffer layer makes the interface defects and interface state density reduce because the partial stress induced by large crystal lattice mismatch and thermal mismatch between ZnO and SiC can be relaxed.
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