【摘要】 在无表面活性剂条件下，以甘油为溶剂采用简易水热法，合成了树枝状结构PbSe。水热温度、时间以及Pb源对PbSe形貌调控及形状影响很大。得到的PbSe分别用XRD、SEM、TEM进行了表征。这一合成方法为高通量制备不用纳米结构及微观形貌的半导体纳米材料开辟了一条崭新的技术路线。同时也探讨了不同微观形貌PbSe的形成机理，表明PbSe形貌主要取决于晶面<100>和<111>的生长速率比（R）。更多还原

【Abstract】 PbSe dendritic structures have been synthesized by a facile hydrothermal route in glycerol solution without surfactant. Temperature, time, and Pb²⁺source play a major role in controlling the morphology and shape evolution of the product. The obtained products were characterized by X-ray power diffraction（XRD）, scanning electron microcopy（SEM）and transmission electron microscopy（TEM）. This simple synthesis technique for the growth of various nano-and microstructures opens a new route to prepare hierarchical structures of a variety of semiconducting materials in a large quantity. The possible formation mechanism for products with various structures are presented, which is mainly based on the variation of the ratio（R）of the growth rates along the <100> direction and <111> direction.更多还原