Identification of intrinsic hydrogen impurities in ZnO with 1H solid-state nuclear magnetic resonance spectroscopy

- 1H solid-state NMR spectroscopy can be applied to investigate different H species at very low concentration in ZnO.
- Two 1H NMR signals are assigned to interstitial H (Hi) and H substituting for oxygen ions (HO).
- The amounts of Hi and HO species are found to vary upon heating in both bulk and nanosized ZnO samples.