title: TiO2 Nanowires/Poly(Methyl Methacrylate) Based Hybrid Photodetector: Improved Light Detection.
abstract: Hybrid photodetector with a maximum external quantum efficiency of ~3.08% in the UV region at 370 nm, was fabricated by spin-coated poly(methyl methacrylate) (PMMA) polymer onto glancing angle deposited (GLAD) vertically aligned TiO2 nanowire (NW) arrays. The TiO2 NWs/PMMA detector shows excellent rectification and constant 1.3 times photo-responsivity in the reverse bias condition from -1 V to -10 V. The photodiode possesses a low ideality factor of 5.1 as compared to bared TiO2 NWs device of 7.1. The hybrid device produces sharp turn-on of -0.8 s and turn-off transient of -0.9 s respectively.
authors.forename: S
authors.initials: S
authors.lastname: Saha
authors.forename: A
authors.initials: A
authors.lastname: Mondal
authors.forename: B
authors.initials: B
authors.lastname: Choudhur
authors.forename: T
authors.initials: T
authors.lastname: Goswami
authors.forename: M B
authors.initials: MB
authors.lastname: Sarkar
authors.forename: K K
authors.initials: KK
authors.lastname: Chattopadhyay
mesh_terms: D008027:Light; D020366:Methylmethacrylate / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D053770:Nanowires; D013056:Spectrophotometry, Ultraviolet; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: C009495:titanium dioxide; D020366:Methylmethacrylate; D014025:Titanium