Longitudinal twinning α-In2Se3 nanowires with the （10T 8） twin plane were synthesized to fabricate high performance single nanowire based photodetectors. As-synthesized a-In2Se3 nanowire exhibited typical n-type se...Longitudinal twinning α-In2Se3 nanowires with the （10T 8） twin plane were synthesized to fabricate high performance single nanowire based photodetectors. As-synthesized a-In2Se3 nanowire exhibited typical n-type semiconducting behavior with an electron mobility of 23.1 cm2-V1. S-1 and a broadband spectral response from 300 to 1100 nm, covering the ultraviolet-visible-near-infrared （UV-visible-NIR） region. Besides, the fabricated device showed a high responsivity of 8.57 × 10^5 A·W^-1, high external quantum efficiency up to 8.8 × 107% and a high detectivity of 1.58 ×10^12 Jones under 600 nm light illumination at a basis of 3 V, which are much higher than previously reported In2Se3 nanostructures due to the interface defect effect of the twin plane. The results indicated that the longitudinal twinning α-In2Se3 nano- wires have immense potential for further applications in highly performance broadband photodetectors and other optoelectronic devices.展开更多
Solid-state sources of single-photon emitters are highly desired for scalable quantum photonic applications, such as quantum communication, optical quantum information processing, and metrology. In the past year, grea...Solid-state sources of single-photon emitters are highly desired for scalable quantum photonic applications, such as quantum communication, optical quantum information processing, and metrology. In the past year, great strides have been made in the characterization of single defects in wide-bandgap materials, such as silicon carbide and diamond, as well as single molecules, quantum dots, and carbon nanotubes. More recently, single-photon emitters in layered van der Waals materials attracted tremendous attention, because the two-dimensional(2 D)lattice allows for high photon extraction efficiency and easy integration into photonic circuits. In this review, we discuss recent advances in mastering single-photon emitters in 2 D materials, electrical generation pathways,detuning, and resonator coupling towards use as quantum light sources. Finally, we discuss the remaining challenges and the outlooks for layered material-based quantum photonic sources.展开更多
文摘Longitudinal twinning α-In2Se3 nanowires with the （10T 8） twin plane were synthesized to fabricate high performance single nanowire based photodetectors. As-synthesized a-In2Se3 nanowire exhibited typical n-type semiconducting behavior with an electron mobility of 23.1 cm2-V1. S-1 and a broadband spectral response from 300 to 1100 nm, covering the ultraviolet-visible-near-infrared （UV-visible-NIR） region. Besides, the fabricated device showed a high responsivity of 8.57 × 10^5 A·W^-1, high external quantum efficiency up to 8.8 × 107% and a high detectivity of 1.58 ×10^12 Jones under 600 nm light illumination at a basis of 3 V, which are much higher than previously reported In2Se3 nanostructures due to the interface defect effect of the twin plane. The results indicated that the longitudinal twinning α-In2Se3 nano- wires have immense potential for further applications in highly performance broadband photodetectors and other optoelectronic devices.
文摘Solid-state sources of single-photon emitters are highly desired for scalable quantum photonic applications, such as quantum communication, optical quantum information processing, and metrology. In the past year, great strides have been made in the characterization of single defects in wide-bandgap materials, such as silicon carbide and diamond, as well as single molecules, quantum dots, and carbon nanotubes. More recently, single-photon emitters in layered van der Waals materials attracted tremendous attention, because the two-dimensional(2 D)lattice allows for high photon extraction efficiency and easy integration into photonic circuits. In this review, we discuss recent advances in mastering single-photon emitters in 2 D materials, electrical generation pathways,detuning, and resonator coupling towards use as quantum light sources. Finally, we discuss the remaining challenges and the outlooks for layered material-based quantum photonic sources.
