CAJ | 학술논문

以醋酸锌为锌源,二甘醇为溶剂,通过一种改进的溶剂热法制备出具有分级微纳结构的ZnO空心球.X射线衍射(XRD),扫描电子显微术(SEM),N_2吸附脱附等表征结果显示此ZnO材料的初级结构为纳米颗粒,次级结构为该纳米颗粒构筑的微米级多分散小球.聚焦离子束(FIB)切割实验表明,小球内部为中空结构.这种新颖的复合结构应用于染料敏化太阳电池(DSSC)领域,有两大优势:其初级结构提供了大的比表面以吸附更多染料分子,同时其次级结构和孔结构可以起到光散射中心的作用,提高光的利用率,从而最终提高了电池的光电转换效率.
이작산자위자원,이감순위용제,통과일충개진적용제열법제비출구유분급미납결구적ZnO공심구.X사선연사(XRD),소묘전자현미술(SEM),N_2흡부탈부등표정결과현시차ZnO재료적초급결구위납미과립,차급결구위해납미과립구축적미미급다분산소구.취초리자속(FIB)절할실험표명,소구내부위중공결구.저충신영적복합결구응용우염료민화태양전지(DSSC)영역,유량대우세:기초급결구제공료대적비표면이흡부경다염료분자,동시기차급결구화공결구가이기도광산사중심적작용,제고광적이용솔,종이최종제고료전지적광전전환효솔.
Hollow ZnO spheres with hierarchical micro/nanoarchitectures were prepared by a modified solvothermal method using zinc acetate as zinc source and diethylene glycol as solvent. X-ray diffraction (XRD), scanning electron microscope (SEM) and N_2 adsorptiondesorption show that they are polydisperse microspheres consisting of many primary nanoparticles. Hollow structures can be observed when a sphere is split by focused ion beam (FIB). The application of this novel complex architecture to dye-sensitized solar cell (DSSC) leads to two benefits: the secondary structures can function as light scattering centers, while primary structures provide large surface area.