Synthesis and Characterization of Solution-Processed Antimony Selenide Thin Film Solar Cells

Abstract

The thin film solar cells have attracted world-wide attention due to the high efficiency, device flexibility and low cost. Antimony selenide (Sb2Se3) is a promising candidates as light absorption materials for thin-film solar cells, with a suitable band gap, low material prices, earth-abundant, nontoxicity, and excellent chemical stability. Herein, we fabricated TiO2/Sb2Se3/P3HT heterojunction solar cell with a high crystalline Sb2Se3 films utilized a hydrazine solution process, in which TiO2 as an electron transport layer and P3HT as hole transport layer, that reduced charge recombination as well increased the fill factor. According to control the spin coating cycles, the device performance has been investigated by the different thickness of Sb2Se3 layer. As a result, the device exhibited excellent performance when the thickness of the Sb2Se3 is 460nm, and the power conversion efficiency achieve at 2.45%. furthermore, to study the application potential of Sb2Se3, we synthesized Sb2Se3 nanocrystal and applied in perovskite solar cells, where Sb2Se3 as a hole transport layer and exhibited promising applications in photovoltaic devices.