A method was presented for quantifying the O diffusion behavior in a nanodevice fabricated using individual ZnO nanowires/nanobelts. A nanodevice was built using a single nanobelt. Defects were introduced into the nanobelt during fabrication. When the device was exposed to the atmosphere for several days, O diffused into the nanobelt and significantly changed the conductivity of the device. By comprising the experimentally measured conductivity with simulations, the diffusion coefficient of O in ZnO nanowires/nanobelts was deduced.

Quantifying Oxygen Diffusion in ZnO Nanobelt. J.Liu, P.Gao, W.Mai, C.Lao, Z.L.Wang, R.Tummala: Applied Physics Letters, 2006, 89[6], 063125 (3pp)