CAJ | 학술논문

以Zn(NO_3)_2、(NH_4)_2CO_3与Y(NO_3)_3为初始原料,采用水热法制备了棒状和枝状ZnO及掺杂Y的ZnO纳米晶.采用XRD、Raman、FESEM 、EDAX和PL方法对合成产物形貌与发光性能进行表征.XRD与Raman的研究结果表明,合成的棒状和枝状ZnO纳米晶为六方纤锌矿单晶;XRD与FESEM的测试结果表明,pH值对水热产物的晶相及形貌有重要的影响;XRD结合EDAX的分析结果表明,热处理后的水热产物中Y元素掺入了ZnO基体;ZnO及ZnO-Y_2O_3的纳米晶PL谱的结果表明,产物的发光性能与制备方式有关,与此同时,ZnO-Y_2O_3纳米晶的本征发光峰发生红移,其结果与Y元素与ZnO之间的能量传递有关.
이Zn(NO_3)_2、(NH_4)_2CO_3여Y(NO_3)_3위초시원료,채용수열법제비료봉상화지상ZnO급참잡Y적ZnO납미정.채용XRD、Raman、FESEM 、EDAX화PL방법대합성산물형모여발광성능진행표정.XRD여Raman적연구결과표명,합성적봉상화지상ZnO납미정위륙방섬자광단정;XRD여FESEM적측시결과표명,pH치대수열산물적정상급형모유중요적영향;XRD결합EDAX적분석결과표명,열처리후적수열산물중Y원소참입료ZnO기체;ZnO급ZnO-Y_2O_3적납미정PL보적결과표명,산물적발광성능여제비방식유관,여차동시,ZnO-Y_2O_3납미정적본정발광봉발생홍이,기결과여Y원소여ZnO지간적능량전체유관.
Rod and branch like ZnO and flake like Y-doped ZnO nano-crystals were fabricated via a hydrothermal method using Zn(NO_3)_2, (NH_4)_2CO_3 and Y(NO_3)_3 as starting materials. X-ray diffraction, Raman, field electron scanning electronic microscropy and photoluminescence were used to characterize the products. The results of XRD and Raman reveal that the synthesized nano structured ZnO is single crystal with wurtzite structure. The results of FESEM and XRD indicate that pH values has significant effect on the morphology and crystal phases. The incorporation of Y element is proved by the results of XRD combination with EDAX. The results of photoluminescence reveal that the optical property of ZnO is related with the method of fabrication. The incorporation of Y has remarkable effect on the luminescence property of doped ZnO nanocrystal and the peak centered around 387 nm shifted to 399 nm. The result is perhaps caused by the energy transfer between Y and the matrix of ZnO.