Hydrothermal method as a facile bottom-up synthesis technique has many advantages for manufacturing various nanomaterials with controlled properties. In this work, lead telluride nanostructures were synthesized via a simple hydrothermal method at different surfactant concentrations. It was observed that the surfactant concentration has considerable effect on the morphology, and size of the synthesized nanostructures and thus the thermoelectric performance. In the present work, several techniques were used to characterize the structure, morphology, composition and optical properties of the synthesized PbTe nanostructures including XRD, TEM, EDS as well as PL and Raman spectroscopy. The electrical and thermoelectric properties were studied in the temperature range from 300 to 550 K. The results demonstrate that increasing the surfactant concentration improves the power factor due to a significant enhancement in the Seebeck coefficient.

水热法作为一种简便的自下而上的合成技术，对于制造具有可控特性的各种纳米材料具有许多优势。在这项工作中，通过简单的水热方法在不同的表面活性剂浓度下合成了碲化铅纳米结构。观察到表面活性剂的浓度对合成的纳米结构的形态，大小以及热电性能具有相当大的影响。在目前的工作中，几种技术被用来表征合成的PbTe纳米结构的结构，形态，组成和光学性质，包括XRD，TEM，EDS以及PL和拉曼光谱。在300至550 K的温度范围内研究了电和热电性能。