title: Pulse electrodeposition of iridium oxide on silicon nanotips for field emission study.
abstract: To improve electron field emission properties of anodic aluminum oxide (AAO) templated Si nanotips, IrO2 nanoparticles were deposited on the nanotips using bipolar pulse electrodeposition method. The IrO2 nanoparticles had a uniform size distribution with an average value of approximately 4 nm, and well dispersed on the ordered Si nanotips. Due to the small radius and a lower work function, the IrO2/Si nanotip exhibited field emission properties better than the bare Si nanotip with a field enhancement factor of approximately 128. The SEM and TEM were utilized to investigate the structure and morphology. The physical and chemical properties were evaluated XRD and X-ray photoelectron spectroscopy (XPS).
authors.affiliation: Department of Materials Science and Engineering, National Chiao-Tung University, Hsinchu, 30050, Taiwan, ROC.
authors.forename: Te-Ming
authors.initials: TM
authors.lastname: Chen
authors.forename: Jui-Yi
authors.initials: JY
authors.lastname: Hung
authors.forename: Fu-Ming
authors.initials: FM
authors.lastname: Pan
authors.forename: L
authors.initials: L
authors.lastname: Chang
authors.forename: Shich-Chuan
authors.initials: SC
authors.lastname: Wu
authors.forename: Ta-Chang
authors.initials: TC
authors.lastname: Tien