Morphology Control of Zinc Oxide Particles at Low Temperature

We controlled the crystal growth of ZnO to realize morphology control of ZnO particles and particulate films. Crystalline ZnO was nucleated in aqueous solutions containing zinc nitrate hexahydrate and ethylenediamine at 60 °C. ZnO particles had many needles and Ultrafine surface relief structures. ZnO particles then deposited on substrates to form particulate films, and thin sheets were further grown to connect ZnO particles to each other and with substrates. Crystal growth control and morphology control of ZnO in aqueous solutions would contribute to the development of crystallography of oxide materials in solutions and future inorganic devices such as sensors and solar cells.