Transient, Biocompatible Electronics and Energy Harvesters Based on ZnO

Semiconducting oxides are of growing interest as replacements for silicon in thin fi lm transistors for active matrix display backplanes; they are also of potential use in transparent, fl exible electronics and energy harvesters. Zinc oxide (ZnO), in particular, has a favorable combination properties, including excellent transparency in the visible wavelength range, [ 1 ] high electron mobility, [ 2 ] and strong piezoelectric response. [ 3 ] As a result, ZnO, in forms ranging from fi lms to wires and rods, has been explored in sensing, [ 4–6 ] catalysis, [ 7 , 8 ]