以氯化亚铜(CuCl)、氯化铟(InCl_3·4H_2O)作为金属源,溶解在三辛基膦(TOP)中的Se粉作硒源,利用油胺(OLA)作为配体、十八烯作为溶剂,采用热注入法合成出了CuInSe_2纳米晶(NCs),研究了反应温度对产物的影响。采用X射线衍射仪(XRD)、...以氯化亚铜(CuCl)、氯化铟(InCl_3·4H_2O)作为金属源,溶解在三辛基膦(TOP)中的Se粉作硒源,利用油胺(OLA)作为配体、十八烯作为溶剂,采用热注入法合成出了CuInSe_2纳米晶(NCs),研究了反应温度对产物的影响。采用X射线衍射仪(XRD)、透射电子显微镜(TEM)、能谱仪(EDS)和紫外-可见分光光度计(UV-Vis)等测试手段对CuInSe_2纳米晶的晶体结构、形貌、化学组分和光学性能进行了表征。实验结果表明:通过调控反应温度合成了具有不同形貌的黄铜矿结构的CuInSe_2纳米晶,纳米晶的形貌由三角形或四边形向球形演化,其晶粒平均尺寸为3.71~13.65 nm,其光学带隙Eg在1.75~1.50 e V之间变化。所得到的产物在有机溶剂甲苯中分散性良好,这样的"墨水"溶液在后期制备薄膜太阳能电池更有利。展开更多
The new carbon nitride films promise to be with superhigh hardness, unique physical and chemical properties, and have important applications in many fields, such as magnetics, electronics and mechanics, because they a...The new carbon nitride films promise to be with superhigh hardness, unique physical and chemical properties, and have important applications in many fields, such as magnetics, electronics and mechanics, because they are suggested to have a larger bulk modulus B than diamond, which arouses scientists all over the world to great interest. However, many experimental efforts to yield this predicted material had failed since Liu reported the stable phase of β-C<sub>3</sub>N<sub>4</sub> and the possibility of synthesis in 1989. Recently, Niu et al. prepared the films containing nano-size β-C<sub>3</sub>N<sub>4</sub> phase grains by laser ablation of graphite展开更多
文摘以氯化亚铜(CuCl)、氯化铟(InCl_3·4H_2O)作为金属源,溶解在三辛基膦(TOP)中的Se粉作硒源,利用油胺(OLA)作为配体、十八烯作为溶剂,采用热注入法合成出了CuInSe_2纳米晶(NCs),研究了反应温度对产物的影响。采用X射线衍射仪(XRD)、透射电子显微镜(TEM)、能谱仪(EDS)和紫外-可见分光光度计(UV-Vis)等测试手段对CuInSe_2纳米晶的晶体结构、形貌、化学组分和光学性能进行了表征。实验结果表明:通过调控反应温度合成了具有不同形貌的黄铜矿结构的CuInSe_2纳米晶,纳米晶的形貌由三角形或四边形向球形演化,其晶粒平均尺寸为3.71~13.65 nm,其光学带隙Eg在1.75~1.50 e V之间变化。所得到的产物在有机溶剂甲苯中分散性良好,这样的"墨水"溶液在后期制备薄膜太阳能电池更有利。
文摘The new carbon nitride films promise to be with superhigh hardness, unique physical and chemical properties, and have important applications in many fields, such as magnetics, electronics and mechanics, because they are suggested to have a larger bulk modulus B than diamond, which arouses scientists all over the world to great interest. However, many experimental efforts to yield this predicted material had failed since Liu reported the stable phase of β-C<sub>3</sub>N<sub>4</sub> and the possibility of synthesis in 1989. Recently, Niu et al. prepared the films containing nano-size β-C<sub>3</sub>N<sub>4</sub> phase grains by laser ablation of graphite
