title: Strong photo-response in a flip-chip nanowire p-Cu2O/n-ZnO junction.
abstract: Cu(2)O nanoneedles are synthesized on a copper substrate by a simple anodization and reducing ambient annealing protocol. ZnO nanorods are grown on ITO coated glass by a low temperature chemical route. The electronic and photo-response properties of the p-Cu(2)O/n-ZnO flip-chip heterojunction are then studied and analyzed. We show that the I-V characteristic is rectifying and the junction exhibits a good photoresponse (∼120% under 1 V reverse bias) under AM 1.5 (1 Sun) illumination. This nano-heterojunction photo-response is far stronger as compared to that of a pulsed laser deposited thin film p-Cu(2)O/n-ZnO heterojunction, which can be attributed to higher junction area in the former case.
authors: Physical and Materials Chemistry Division, National Chemical Laboratory, Dr Homi Bhabha Road, Pune, India.
authors: Meenal
authors: M
authors: Deo
authors: Sarfraj
authors: S
authors: Mujawar
authors: Onkar
authors: O
authors: Game
authors: Ashish
authors: A
authors: Yengantiwar
authors: Arun
authors: A
authors: Banpurkar
authors: Sneha
authors: S
authors: Kulkarni
authors: Jyoti
authors: J
authors: Jog
authors: Satishchandra
authors: S
authors: Ogale
mesh_terms: D003300:Copper / Q000737:chemistry* / Q000528:radiation effects; D046911:Macromolecular Substances / Q000737:chemistry / Q000528:radiation effects; D008422:Materials Testing; D008968:Molecular Conformation / Q000528:radiation effects; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure; D010316:Particle Size; D013499:Surface Properties / Q000528:radiation effects; D015034:Zinc Oxide / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D046911:Macromolecular Substances; D003300:Copper; D015034:Zinc Oxide; C030973:cupric oxide