Fast synthesis, morphology transformation, structural and optical properties of ZnO nanorods grown by seed‐free hydrothermal method

摘要: A fast and low cost seed-free hydrothermal synthesis method to synthesize zinc oxide (ZnO) nanorods with controllable morphology, size structure has been developed. Ammonia is used react water tailor the ammonium hydroxide concentration, which provides a continuous source of OH− for hydrolysis precipitation final products. Hence, allowing ZnO growth on large areas metal (Au Ag coated glass), p-type Si organic flexible (PEDOT: PSS) substrates. Increasing time, morphology transforms from pencil-like hexagonal shape rod-like morphology. Within one hour length reached almost 1 µm. The optical characteristics shown that grown are dominated by two emission peaks, in UV range centered at 381 nm other relatively high intensity appears visible 630 nm. While duration was increased 2 h 6 h, band gap observed increase 2.8 eV 3.24 eV, respectively. This suitable LEDs, UV-photodetector, sensing, photocatalytic, multifunctional devices optoelectronic devices, can be fabricated any substrates, including foldable