【摘 要】
：
Due to the wide application of UV-A (320 nm-400 nm) and UV-C (200 nm-280 nm) photodetectors,dual-wavelength(UV-A/UV-C) photodetectors are promising for future m
【机 构】
：
Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO),Chinese Academy of Sciences (CAS),Suzhou 215
论文部分内容阅读
Due to the wide application of UV-A (320 nm-400 nm) and UV-C (200 nm-280 nm) photodetectors,dual-wavelength(UV-A/UV-C) photodetectors are promising for future markets.A dual-wavelength UV photodetector based on vertical(A1,Ga)N nanowires and graphene has been demonstrated successfully,in which graphene is used as a transparent electrode.Both UV-A and UV-C responses can be clearly detected by the device,and the rejection ratio (R254 nm/R450 nm) exceeds 35 times at an applied bias of-2 V.The short response time of the device is less than 20 ms.Furthermore,the underlying mechanism of double ultraviolet responses has also been analyzed systematically.The dual-wavelength detections could mainly result from the appropriate ratio of the thicknesses and the enough energy band difference of (A1,Ga)N and GaN sections.
其他文献
Co3Sn2S2 has attracted a lot of attention for its multiple novel physical properties,including topological nontrivial surface states,anomalous Hall effect,and a
It has been a long-standing puzzling problem that some glasses exhibit higher glass transition temperatures (denoting high stability) but lower activation energ
An effective regulation of the magnetism and interface of ferromagnetic materials is not only of great scientific sig-nificance,but also has an urgent need in m
We propose a kind of spectral polarization-encoding (SPE) for broadband light pulses,which is realized by inducing optical rotatory dispersion (ORD),and decoded
We study steered coherence (SC) and entanglement in a three-spin Heisenberg XX model under twisted boundary conditions and show that their strengths can be sign
A semi-infinite waveguide acts as a mirror and helps protect the qubit in front of it from decoherence.Here,we investigate the interference effect in an open wa
The synapse of human brain neurons is not only the transmission channel of information,but also the basic unit of human brain learning and information storing.T
A radar-infrared compatible stealth surface is designed and analyzed.Without modifying the radar absorbing material(RAM),the design can theoretically achieve ra
Using the evolutionary methodology for crystal structure prediction,we have predicted the orthorhombic Cmcm and Pnma phases for ScB4.The earlier proposed CrB4-,
We investigate the influence of the birefringence on the high-order harmonics in an a-cut ZnO crystal with mid-infrared laser pulses.The high harmonics exhibit