Origin of photoresponse in black phosphorus phototransistors
نویسندگان
چکیده
Tony Low,1,2,3,*,† Michael Engel,1,4,† Mathias Steiner,4 and Phaedon Avouris1 1IBM T. J. Watson Research Center, 1101 Kitchawan Road, Yorktown Heights, New York 10598, USA 2Department of Physics and Electrical Engineering, Columbia University, New York, New York 10027, USA 3Department of Electrical & Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, USA 4IBM Research-Brazil, Rio de Janeiro, RJ 22290-240, Brazil (Received 27 July 2014; revised manuscript received 15 August 2014; published 29 August 2014)
منابع مشابه
Quasi Two-Dimensional Dye-Sensitized In2O3 Phototransistors for Ultrahigh Responsivity and Photosensitivity Photodetector Applications.
We report the development of dye-sensitized thin-film phototransistors consisting of an ultrathin layer (<10 nm) of indium oxide (In2O3) the surface of which is functionalized with a self-assembled monolayer of the light absorbing organic dye D102. The resulting transistors exhibit a preferential color photoresponse centered in the wavelength region of ∼500 nm with a maximum photosensitivity of...
متن کاملBlack phosphorus-monolayer MoS2 van der Waals heterojunction p-n diode.
Phosphorene, a elemental 2D material, which is the monolayer of black phosphorus, has been mechanically exfoliated recently. In its bulk form, black phosphorus shows high carrier mobility (∼10,000 cm(2)/V·s) and a ∼0.3 eV direct band gap. Well-behaved p-type field-effect transistors with mobilities of up to 1000 cm(2)/V·s, as well as phototransistors, have been demonstrated on few-layer black p...
متن کاملHighly sensitive and multispectral responsive phototransistor using tungsten-doped VO2 nanowires.
In this work, we report a novel and feasible strategy for the practical applications of one-dimensional ultrasensitive phototransistors made of tungsten-doped VO2 single nanowires. The photoconductive response of the single nanowire device was investigated under different visible light excitations (405 nm, 532 nm, and 660 nm). The phototransistor device exhibited ultrafast photoresponse, high r...
متن کاملVisualizing Light Scattering in Silicon Waveguides with Black Phosphorus Photodetectors.
A black phosphorus photodetector is utilized to investigate the light-scattering patterns of a silicon waveguide through wavelength- and polarization-dependent scanning photocurrent measurements. The photocurrent signals exhibit similar patterns to the light-intensity distribution of the waveguide calculated by finite-difference time-domain simulations, suggesting that photoexcited electron-hol...
متن کاملAmbipolar solution-processed hybrid perovskite phototransistors
Organolead halide perovskites have attracted substantial attention because of their excellent physical properties, which enable them to serve as the active material in emerging hybrid solid-state solar cells. Here we investigate the phototransistors based on hybrid perovskite films and provide direct evidence for their superior carrier transport property with ambipolar characteristics. The fiel...
متن کامل