A5015616982- Photonic and Optical Devices
- Photonic Crystals and Applications
- Advanced Photonic Communication Systems
- Plasmonic and Surface Plasmon Research
- Nanowire Synthesis and Applications
- Optical Network Technologies
- Advanced Fiber Laser Technologies
- 2D Materials and Applications
- Bone Tissue Engineering Materials
- Optical Coatings and Gratings
- Graphene research and applications
- Graphene and Nanomaterials Applications
- Semiconductor Lasers and Optical Devices
- Perovskite Materials and Applications
- Advanced Fiber Optic Sensors
- Silicon Nanostructures and Photoluminescence
- Advanced Optical Sensing Technologies
- Organic Light-Emitting Diodes Research
- Shoulder Injury and Treatment
- Tendon Structure and Treatment
- Neural Networks and Reservoir Computing
- Semiconductor Quantum Structures and Devices
- Quantum Dots Synthesis And Properties
- Advanced MEMS and NEMS Technologies
- Metamaterials and Metasurfaces Applications
Zhejiang University
2018-2025
University of Minnesota
2015-2025
Thermo Fisher Scientific (United States)
2025
Jiaxing University
2022-2024
Central South University
2024
Xiangya Hospital Central South University
2024
Huazhong University of Science and Technology
2016-2023
Wuhan National Laboratory for Optoelectronics
2015-2023
State Key Laboratory of Modern Optical Instruments
2019-2023
State Administration of Foreign Experts Affairs
2023
Photodetectors convert light signals into current or voltage outputs and are widely used for imaging, sensing, spectroscopy. Perovskite-based photodetectors have shown high sensitivity fast response due to the unprecedented low recombination loss in this solution processed semiconductor. Among various types of CH3NH3PbI3 morphology (film, single crystal, nanowire), single-crystalline nanowires particularly interesting photodetection because their reduced grain boundary, morphological...
Graphene has attracted much attention for the realization of high-speed photodetection silicon photonics over a wide wavelength range. However, reported fast graphene photodetectors mainly operate in 1.55 μm band. In this work, we propose and realize high-performance waveguide based on bolometric/photoconductive effects by introducing an ultrathin silicon-graphene hybrid plasmonic waveguide, which enables efficient light absorption at beyond. When operating 2 μm, present photodetector...
The increasing demands for more efficient and brighter thin-film light-emitting diodes (LEDs) in flat-panel display solid-state lighting applications have promoted research into three-dimensional (3D) perovskites. These materials exhibit high charge mobilities low quantum efficiency droop
Abstract Over the past 70 years, semiconductor industry has undergone transformative changes, largely driven by miniaturization of devices and integration innovative structures materials. Two-dimensional (2D) materials like transition metal dichalcogenides (TMDs) graphene are pivotal in overcoming limitations silicon-based technologies, offering approaches transistor design functionality, enabling atomic-thin channel transistors monolithic 3D integration. We review important progress...
Abstract Silicon photonics is being extended from the near‐infrared window of 1.3–1.5 µm for optical fiber communications to mid‐infrared (mid‐IR) wavelength‐band 2 or longer satisfying increasing demands in many applications. Mid‐IR waveguide photodetectors on silicon have attracted intensive attention as one indispensable elements various photonic systems. However, when combining traditional semiconductor materials with silicon, there are some challenges due lattice mismatch and thermal...
Osteoporosis bone defect is a refractory orthopaedic disease which characterized by impaired quality and regeneration capacity. Current therapies, including antiosteoporosis drugs artificial grafts, are not always satisfactory. Herein, strontium-substituted calcium phosphate silicate bioactive ceramic (Sr-CPS) was fabricated. In the present study, extracts of Sr-CPS were prepared for in vitro study scaffolds used vivo study. The cytocompatibility, osteogenic osteoclastogenic properties...
A lateral germanium/silicon waveguide photodetector with a side-coupling structure is proposed and realized. For the present photodetector, input light split into four channels, which are gradually coupled two parallel germanium waveguides by adiabatic side-coupling. In this way, uniform optical field distribution achieved space-charge effect eliminated greatly even high power. The experimental results show that responsivity still as 0.68 A/W for an power of 28 mW saturation photocurrent...
Graphene can be obtained with the reduction of graphene oxide (GO). Various methods will result in different varieties and amounts oxygen‐containing groups on reduced (rGO) diverse properties. In this work, rGO is fabricated titanium surfaces by process GO through three types methods, for example, vacuum thermal annealing, hydrazine hydrate, sodium borohydride chemical reduction. Results show that annealing remove carboxyl entirely at 600 °C 1 h, hydrate eliminate oxygen functionalities,...
Two-dimensional materials have attracted much interest for realizing novel optoelectronic devices, e.g., photodetectors. In this work, we demonstrate a high-performance black-phosphorus avalanche photodetector based on silicon hybrid plasmonic waveguide with double nanoslots, in which way the light absorption by black phosphorus is enhanced and carrier transit time reduced simultaneously. Benefiting from multiplication process phosphorus, present exhibits high responsivities of 66 A/W...
High-sensitivity and high-bandwidth receivers are always demanded for high-speed optical link systems. As a key element, an avalanche photodiode (APD) is often regarded as one of the most attractive options achieving high sensitivity owing to potential internal gain. In this paper, 48-GHz waveguide Ge/Si operating at O-band (1310 nm) designed with lateral reach-through structure fabricated simplified processes. The APD shows primary responsivity 0.93 A/W unit-gain voltage <mml:math...
Abstract 2D materials (2DMs) meet the demand of broadband and low‐cost photodetection on silicon for many applications. Currently, it is still very challenging to realize excellent silicon‐2DM photodetectors (PDs). Here, graphene–silicon–graphene waveguide PDs operating at wavelength bands 1.55 2 µm, showing potential large‐scale integration, are demonstrated. For fabricated PDs, measured responsivities ≈0.15 ≈0.015 mA W −1 wavelengths 1.96 respectively. In particular, exhibit a high...
Abstract On‐chip mode exchangers play very important roles for multimode photonics, which has drawn much attention many applications. However, it is still challenging to achieve compact with high performances in an ultra‐broad bandwidth. Here a universal approach of on‐chip manipulations proposed by manipulating the excitations/interferences, and ultra‐compact are realized low excess losses (ELs) extinction ratios (ERs) using special metamaterial structures. The presented TE i – j enable...
Bright and efficient deep-red light-emitting diodes (LEDs) are important for applications in medical therapy biological imaging due to the high penetration of photons into human tissues. Metal-halide perovskites have potential achieve bright electroluminescence their favorable optoelectronic properties. However, perovskite-based LEDs not been achieved yet, either Auger recombination low-dimensional or trap-assisted nonradiative 3D perovskites. Here, a lateral Cs
Compact passive silicon photonic devices with high performance are always desired for future large-scale integration. Inverse design provides a promising approach to realize new-generation devices, while it is still very challenging complex most inverse designs reported previously due the limits of computational resources. Here, we present realization several representative advanced optimization, including six-channel mode (de)multiplexer, broadband 90 deg hybrid, and flat-top wavelength...
The p-n homojunction graphene photodetectors (GPDs) based on the photothermoelectric (PTE) effect have drawn much attention for featuring zero-bias operation (i.e., zero dark current) with a bandwidth of tens GHz. However, most waveguide-integrated GPDs were demonstrated 1.55 μm wavelength band. Here, we realize high-performance silicon waveguide integrated enabling efficient light absorption at both bands and 2 μm. broadband present PTE is analyzed theoretically experimentally. When...
Directional couplers (DCs) are the basic elements for constructing various silicon photonic devices, including Mach–Zehnder switches (MZSs). Here, we propose a novel 2 × bent directional based on Bézier curves designed with an efficient semi-inverse design method. Two DCs were to operate at center wavelengths of 1.55 μm and μm, splitting ratios maintained between 45 55% over broad bandwidths 130 nm 160 respectively, excess losses <0.05 dB. The present 1.55/2 also have ultra-compact...
Abstract Silicon photonics modulators based on a 2 × 1 Fabry–Perot (FP) cavity, which is circulator-free, are proposed and demonstrated by introducing two asymmetric multimode-waveguide grating (AMWG) reflectors short straight modulation section with interleaved PN junctions. In particular, the in FP cavity broadened to be far beyond single-mode regime, alleviating inherent sensitivity variations of waveguide dimensions thus reducing stochastic resonance-wavelength variations. The Q factor...