A novel polymer-assisted chemical solution deposition (PACSD) has been proposed to deposit an over-160nm-thick Eu0.3Ce0.7O1.85-x (ECO) single buffer layer on biaxially textured NiW (200) substrate. As-grown ECO buffer layer displayed excellent bi-axial texture as well as smooth, crack-free microstructure. It is observed that Eu-doping can augment the critical thickness of CeO2 as single buffer layer. YBCO deposited on ECO buffered NiW yielded a zero transition temperature at Tc0 = 86 K and a critical current of Jc (0 T, 77 K) = 0.4 MA/cm2. These results offer a simple and cost-effective approach for the preparation of single buffer layer on coated conductors