Self-powered p-NiO/n-ZnO heterojunction ultraviolet photodetectors fabricated on plastic substrates.

ABSTRACT: A self-powered ultraviolet (UV) photodetector (PD) based on p-NiO and n-ZnO was fabricated using low-temperature sputtering technique on indium doped tin oxide (ITO) coated plastic polyethylene terephthalate (PET) substrates. The p-n heterojunction showed very fast temporal photoresponse with excellent quantum efficiency of over 63% under UV illumination at an applied reverse bias of 1.2 V. The engineered ultrathin Ti/Au top metal contacts and UV transparent PET/ITO substrates allowed the PDs to be illuminated through either front or back side. Morphology, structural, chemical and optical properties of sputtered NiO and ZnO films were also investigated.

SUBMITTER: Hasan MR 

PROVIDER: S-EPMC4759661 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature