CAJ | 학술논문

以硝酸锌和硒粉为源物质，以乙二醇和氢氧化钠的水溶液为反应介质，采用水热法制备了ZnSe纳米颗粒，利用差热分析仪（TG—DTA）、X射线衍射仪（XRD），扫描电子显微镜（SEM）和光致发光谱（PL）对产物进行热稳定性、结构、形貌和光学性能表征．差热结果表明ZnSe在常温下具有一定稳定性，直到450℃以上时在空气中可转化为ZnO纳米材料．XRD和SEM研究结果表明，纳米颗粒具有闪锌矿结构并且随着反应时间的增加颗粒尺寸有所增大．PL测试显示近带边发射峰较强，这说明产物的结晶状况良好，并且具有较好的光致发光性能．
이초산자화서분위원물질，이을이순화경양화납적수용액위반응개질，채용수열법제비료ZnSe납미과립，이용차열분석의（TG—DTA）、X사선연사의（XRD），소묘전자현미경（SEM）화광치발광보（PL）대산물진행열은정성、결구、형모화광학성능표정．차열결과표명ZnSe재상온하구유일정은정성，직도450℃이상시재공기중가전화위ZnO납미재료．XRD화SEM연구결과표명，납미과립구유섬자광결구병차수착반응시간적증가과립척촌유소증대．PL측시현시근대변발사봉교강，저설명산물적결정상황량호，병차구유교호적광치발광성능．
Well dispersed ZnSe nanoparticles have been prepared in ethylene glycol and NaOH aqueous solution as reaction medium by hydrothermal method using ZnNO3·6H2O and Se as source materials.TG-DTA,X-ray diffraction(XRD),scanning electron microscope(SEM),and photoluminescence(PL) were used to investigate the structure,morphologies and optical properties of ZnSe nanoparticles.At ambient temperature,ZnSe nanoparticles had a good thermostability.ZnO nanocrystal can formed at above 450℃ from ZnSe nanoparticles with O2 in air.The results of XRD and TEM indicated that the structure of the as-prepared samples was the cubic zinc blende,and the average size of nanoparticles becomes bigger with the increase of reaction time.Photoluminescence measurements were also carried out,which indicated that the nanoparticles have much better crystallization and better photoluminescence behaviors.