Add time:07/26/2019         Source:sciencedirect.com

A new kind of photovoltaic material, copper yttrium selenide (CuYSe2) was synthesized using a self-propagating high-temperature synthesis method. Here the reaction process of the SHS process of CuYSe2 has been illustrated. The crystalline structure and morphology of the CuYSe2 powders were characterized using X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). The band gap of the CuYSe2 material was estimated to be 1.53 eV based on the UV–vis spectrum of the material. Thin films of CuYSe2 were prepared using a simple, low-cost non-vacuum method. The current-voltage (I-V) behavior of CuYSe2 photovoltaic device was determined. The Ilight/Idark ratio of the CuYSe2 device was found to be 2.81, implying that CuYSe2 is a very promising candidate for application as the absorption materials in thin film solar cells.

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