Effects of surface capping with Poly-vinyl butyral (PVB) on the ultraviolet photosensing properties of ZnO nanorods

摘要

The effect of surface capping with poly-vinyl butyral (PVB) on the ultraviolet (UV) photosensing properties of ZnO nanorods (NRs) has been investigated. The PVB capped ZnO NRs show enhanced UV photocurrent and photoresponse due to surface modification as compared to the as-grown NRs. The photocurrent dependence on light intensity indicates that there is improvement in the space-charge-limited photocurrent in the capped NRs as compared to the as-grown NRs.