摘要
以乙酰丙酮铜醋酸锌氯化亚锡S粉为前驱体!通过热注入法合成制备出了Cu_2ZnSnS_4纳米颗粒(CATS)。此方法是指将低温溶液注入高温溶液,伴随成核与晶体生长过程。本文研究了不同反应温度对纳米颗粒生长的影响。XRD测试结果表明制备的CZTS纳米颗粒为锌黄锡矿结构。透射电镜结果显示所制备的纳米颗粒为六边形状,其尺寸大小约为10 nm。紫外-可见吸收光谱经计算可知,所得纳米晶的禁带宽度约为1.5 eV,接近光伏材料最佳值。
The preparation of Cu_2ZnSnS4(CZTS) nanocrystal was presented from metal salts(copper(II) acetylacetonate,zinc(II)acetate,and tin(II) chloride) and S powder as sulfur source by hot-injection solution.This method involved injecting a cold solution of precursors into a hot surfactant solution,leading to the immediate nucleation and growth of nanocrystals.The structure was investigated under different temperature conditions.X-ray diffraction studies indicated that kesterite CZTS is formed.High-resolution transmission electron microscopy(HRTEM) showed that the prepared CZTS nanocrystals are hexagon with particles size about 10 nm.UV-vis absorption spectrum measurement indicated that the band gap of as-synthesized CZTS nanocrystals was about 1.5 eV,which was near the optimum value for photovoltaic solar conversion in a single-band-gap device.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2012年第S3期689-692,共4页
Rare Metal Materials and Engineering
基金
National Nature Science Foundation of China(50972107,51172165)
Zhejinag Province Key Scientific and Technological Innovations Team of China(2009R50010)
Key Foundation of Zhejiang Province Natural Science Foundation of China(Z4110347)
Wenzhou Municipal Science and Technology Bureau Key Program(G20090082)
