CAJ | 학술논문

利用溶胶-凝胶法制备了 Cu 掺杂 ZnO 纳米晶体薄膜,通过 XRD、TEM 、AFM、UV-VLS 和 VSM对其晶体结构、表面形貌、透光性、禁带宽度和磁性进行了表征和分析。结果表明,所有样品都具有 c 轴择优生长取向,Cu 掺杂没有改变 ZnO 晶体的纤锌矿结构,即没有检测到任何非晶态产物以及各种第二相的存在,表明 Cu2＋已经取代 Zn2＋融入了晶体。但是,Cu的掺杂浓度以及煅烧温度的变化,改善了薄膜的粗糙度、晶粒度、透光率、禁带宽度及室温铁磁性。在所有样品中,掺杂浓度为2％、煅烧温度为500℃的薄膜粗糙度、晶粒度最小而透光性和室温铁磁性最强。样品的能隙则是随着 Cu 掺杂浓度和煅烧温度的提高而变小。
이용용효-응효법제비료 Cu 참잡 ZnO 납미정체박막,통과 XRD、TEM 、AFM、UV-VLS 화 VSM대기정체결구、표면형모、투광성、금대관도화자성진행료표정화분석。결과표명,소유양품도구유 c 축택우생장취향,Cu 참잡몰유개변 ZnO 정체적섬자광결구,즉몰유검측도임하비정태산물이급각충제이상적존재,표명 Cu2＋이경취대 Zn2＋융입료정체。단시,Cu적참잡농도이급단소온도적변화,개선료박막적조조도、정립도、투광솔、금대관도급실온철자성。재소유양품중,참잡농도위2％、단소온도위500℃적박막조조도、정립도최소이투광성화실온철자성최강。양품적능극칙시수착 Cu 참잡농도화단소온도적제고이변소。
Cu-doping ZnO nano-films were prepared by a sol-gel technique.The crystal structures,surface mor-phology,transmittance,band gap and room magnetism were characterized and analyzed by X-ray diffraction (XRD),transmission electron microscopy (TEM),atomic force microscope (AFM),ultraviolet visible spectros-copy (UV-Vis),and vibrating sample magnetometer (VSM).The results show that the films exhibit a hexa-gonal structure,showing a preferential growth along c axis.Any amorphous material or secondary phase was not inspected in all synthesized samples.It indicate that Zn2 + was substituted by Cu2 + in the crystal film.The roughness,the grain size,the transmittance,band gap and room magnetism of the films are improved by the changes of Cu consistence and sintering temperature.The sample of 2% Cu-doping sintered at 500 ℃ has the least roughness and grain sizes,and has the most transmittance and room temperature ferromagnetism.But the band gap decreases with the increase of Cu consistence and sintering temperature.