物理化学学报2011，Vol.27Issue(12)：2920-2926,7.DOI:10.3866/PKU.WHXB20112920
溶剂热法制备球状Cu2ZnSnS4纳米晶及其表征
Synthesis and Characterization of Sphere-Like Cu2ZnSnS4 Nanocrystals by Solvothermal Method
摘要
Abstract
A simple solvothermal route has been successfully used to prepare Cu2ZnSnS4 nanocrystals using metal chloride and L-cysteine as precursors at 180 °C for 16 h. L-cysteine was used as the sulfide source and complexing agent. The phase, structure, morphology, and optical properties of the as-synthesized products were characterized by powder X-ray diffraction (XRD), field-emission scan electron microscopy (FESEM), energy dispersive spectrometry (EDS), high-resolution electron transmission microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), and ultraviolet-visible (UV-Vis) spectrophotometer. The results showed that pure kesterite-type Cu2ZnSnS4 nanocrystals were prepared under this condition and the diameters of the microspheres were about 400-800 nm while the microspheres consisted of nanoflakes with thickness of 20 nm. The band gap of CZTS nanoparticles was about 1.58 eV, which was close to the optimum band gap of thin film solar cells. A possible formation mechanism was also discussed.关键词
Cu2ZnSnS4纳米晶/溶剂热法/L-半胱氨酸/太阳能电池Key words
Cu2ZnSnS4 nanocrystal/ Solvothermal method/ L-cysteine/ Solar cell分类
化学化工引用本文复制引用
蔡倩,梁晓娟,钟家松,邵明国,王芸,赵肖为,向卫东..溶剂热法制备球状Cu2ZnSnS4纳米晶及其表征[J].物理化学学报,2011,27(12):2920-2926,7.基金项目
国家自然科学基金(50772075,50972107)和浙江省纳米材料与器件重点科技创新团队(2009R50010)资助项目 （50772075,50972107）
