3 research outputs found
Fast Photoconductive Responses in Organometal Halide Perovskite Photodetectors
Inorganic
semiconductor-based photodetectors have been suffering from slow response
speeds, which are caused by the persistent photoconductivity of semiconductor
materials. For realizing high speed optoelectronic devices, the organometal
halide perovskite thin films were applied onto the interdigitated
(IDT) patterned Au electrodes, and symmetrical structured photoconductive
detectors were achieved. The detectors were sensitive to the incident
light signals, and the photocurrents of the devices were 2–3
orders of magnitude higher than dark currents. The responsivities
of the devices could reach up to 55 mA W<sup>1–</sup>. Most
importantly, the detectors have a fast response time of less than
20 μs. The light and bias induced dipole rearrangement in organometal
perovskite thin films has resulted in the instability of photocurrents,
and Ag nanowires could quicken the process of dipole alignment and
stabilize the photocurrents of the devices
Additional file 1: of High-Efficient Excitation-Independent Blue Luminescent Carbon Dots
The XRD diffraction pattern of the CDs shows a wide peak at 20.24°. (DOCX 5972 kb