Tribovoltaic Performance of TiO Thin Films: Crystallinity, Contact Metal, and Thermoelectric Effects.

Tribovoltaic devices are attracting increasing attention as motion-based energy harvesters due to the high local current densities that can be generated. However, while these tribovoltaic devices are being developed, debate remains surrounding their fundamental mechanism. Here, we fabricate thin films from one of the world's most common oxides, TiO, and compare the tribovoltaic performance under contact with metals of varying work functions, contact areas, and applied pressure.