High spectrum selectivity organic/inorganic hybrid visible-blind ultraviolet photodetector based on ZnO nanorods

The authors demonstrated high spectrum selectivity hybrid ultraviolet (UV) photodetector (PD) by using electrodeposited ZnO nanorods and poly-N-vinylcarbazole as the electron acceptor and donor, respectively. The photoresponse of the PD showed a narrow band centered at 364 nm with a full width at half maximum of only 26 nm, which was attributed to the absorption of ZnO nanorods. An ultraviolet–visible rejection ratio (R364/R400 nm) of three orders of magnitude was also obtained at −5 V bias. Those results provided a simple route to fabricate low-cost high spectrum selectivity hybrid visible-blind UV-PDs.