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CuInS2(CIS)是重要的三元Ⅰ-Ⅲ-Ⅵ族直接带隙半导体化合物光伏材料。纤维锌矿CIS的铜和铟原子共享一个晶格,因此其在化学计量比调控方面更加灵活,对高效太阳能电池具有重要意义。在低温条件下,通过简单高效的热注入法合成了在常温下能稳定存在的纤维锌矿CIS纳米化合物,并通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)、X射线光谱仪(EDX)和紫外可见分光光度计(UV)分别对其晶相、形貌、化学计量比和能带值进行了分析。结果表明:合成的CIS纳米化合物呈纤维锌矿结构;能带值为1.47eV,非常接近最佳能带值;呈六边形纳米盘状,纳米盘厚度约为10nm,直径约为100nm;Cu∶In∶S的化学计量比为1.70∶1∶2.94。
CuInS2 (CIS) is an important ternary I-III-VI family of direct gap semiconductor compounds for photovoltaic materials. Wurtzite CIS of copper and indium atoms sharing a lattice, so its stoichiometry more flexible regulation, is of great significance for high efficiency solar cells. The wurtzite CIS nanostructures which can stably exist at normal temperature were synthesized by simple and efficient thermal injection at low temperature and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray spectroscopy (EDX ) And UV-Vis spectrophotometer (UV) were analyzed their crystalline phase, morphology, stoichiometry and band values were analyzed. The results show that the synthesized CIS nanowires have a wurtzite structure with an energy band of 1.47 eV, which is very close to the best band value. The hexagonal nanodisk shape has a thickness of about 10 nm and a diameter of about 100 nm. : In: S stoichiometric ratio of 1.70: 1: 2.94.