Supriya Swikruti, Das Subhashree, Samal Satish K, Senapati Subrata, Naik Ramakanta
Department of Engineering and Materials Physics, Institute of Chemical Technology-Indian Oil Odisha Campus, Bhubaneswar, 751013, India.
Department of Electronics and Communication Engineering, ITER, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar 751030, India.
Nanoscale. 2024 Apr 18;16(15):7566-7581. doi: 10.1039/d4nr00081a.
In the realm of nanomaterial research, copper telluride and cobalt telluride have individually attracted considerable attention owing to their unique properties and potential applications. However, there exists a notable gap in the literature when it comes to the exploration of composite materials derived from these elements. From this point of view, a ternary CuCoTe nanocomposite was prepared using the microwave synthesis method. Various characterizations were performed by varying the power and irradiation time. X-Ray diffraction study and transmission electron microscopy analysis confirmed the polycrystalline nature of the material with CuTe and CoTe hexagonal phases. Field emission scanning electron microscopy images reveal nanoparticle-like morphology, which remains unchanged even when the time of irradiation increases. In addition, the nanoparticle size of the material lies in the range of 30-39 nm. The differential scanning calorimetry inferred various exothermic and endothermic peaks. Meanwhile, the optical analysis from the UV-visible study shows the red-shifted absorbance, enabling the material for semiconductor and photovoltaic devices. Furthermore, the optical bandgap of the material varies in the range from 2.45 to 3.61 eV, which reveals the tuneable bandgap desiring the material for various optoelectronic applications. The frequency-temperature-dependent dielectric study gives results for dielectric parameters, conductivity, and impedance behaviour. The material's dielectric constant, dielectric loss, and AC conductivity enhance with the increase in temperature. This behaviour of the material broadens the area of applicability in energy storage devices.
在纳米材料研究领域，碲化铜和碲化钴因其独特的性质和潜在应用而分别备受关注。然而，在探索由这些元素衍生的复合材料方面，文献中存在明显的空白。从这一角度出发，采用微波合成法制备了三元CuCoTe纳米复合材料。通过改变功率和辐照时间进行了各种表征。X射线衍射研究和透射电子显微镜分析证实了该材料具有CuTe和CoTe六方相的多晶性质。场发射扫描电子显微镜图像显示出纳米颗粒状形态，即使辐照时间增加也保持不变。此外，该材料的纳米颗粒尺寸在30 - 39 nm范围内。差示扫描量热法推断出各种放热和吸热峰。同时，紫外可见研究的光学分析显示吸光度发生红移，使该材料可用于半导体和光伏器件。此外，该材料的光学带隙在2.45至3.61 eV范围内变化，这表明其带隙可调，适用于各种光电子应用。频率 - 温度相关的介电研究给出了介电参数、电导率和阻抗行为的结果。该材料的介电常数、介电损耗和交流电导率随温度升高而增强。这种材料特性拓宽了其在储能器件中的应用领域。
