A5002442604- Photonic and Optical Devices
- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Semiconductor Lasers and Optical Devices
- Advanced Thermoelectric Materials and Devices
- Perovskite Materials and Applications
- Advanced Fiber Laser Technologies
- Parallel Computing and Optimization Techniques
- Distributed systems and fault tolerance
- Thermal properties of materials
- Optical Network Technologies
- biodegradable polymer synthesis and properties
- Solid State Laser Technologies
- Thermal Radiation and Cooling Technologies
- Thermal Expansion and Ionic Conductivity
- Molecular Junctions and Nanostructures
- Laser Design and Applications
- Spectroscopy and Laser Applications
- Advanced Data Storage Technologies
- Plasmonic and Surface Plasmon Research
- Nanowire Synthesis and Applications
- Optical Coatings and Gratings
- Advanced Photonic Communication Systems
- Advanced Optical Sensing Technologies
- Atomic and Subatomic Physics Research
Dongguan University of Technology
2025
Harbin Institute of Technology
2011-2024
Chinese PLA General Hospital
2024
Tianjin University
2024
Qingdao University of Science and Technology
2024
Chinese Academy of Sciences
2010-2023
Wuhan Engineering Science & Technology Institute
2023
University of Science and Technology of China
2023
Changchun Institute of Optics, Fine Mechanics and Physics
2013-2023
Shenzhen Institutes of Advanced Technology
2023
Abstract At present, the weak thermoelectric and mechanical performance of zone‐melting bismuth telluride alloys cannot support further improvement cooling processing semiconductor refrigeration devices. Here, MnO 2 is added into high‐strength Bi 0.4 Sb 1.6 Te 3 prepared by ball milling method to optimize its transport properties. Via in situ reaction, O nano‐precipitates are formed matrix, which also leads surplus element. As results, donor‐like effect suppressed, thereby increasing carrier...
Compared with the quick development of polymer solar cells, achieving high-efficiency small-molecule cells (SMSCs) remains highly challenging, as they are limited by lack matched materials and morphology control to a great extent. Herein, two small molecules, BSFTR Y6, which possess broad well absorption energy levels, applied in SMSCs. Morphology optimization sequential solvent vapor thermal annealing makes their blend films show proper crystallinity, balanced high mobilities, favorable...
The lack of desirable diffusion barrier layers currently prohibits the long-term stable service bismuth telluride thermoelectric devices in low-grade waste heat recovery. Here we propose a new design principle beyond thermal expansion matching criterion. A titanium layer with loose structure is optimized, which low Young's modulus and particle sliding synergistically alleviates interfacial stress, while TiTe2 reactant enables metallurgical bonding ohmic contact between material, leading to...
Abstract Thermal properties strongly affect the applications of functional materials, such as thermal management, barrier coatings, and thermoelectrics. Thermoelectric (TE) materials must have a low lattice conductivity to maintain temperature gradient generate voltage. Traditional strategies for minimizing mainly rely on introduced multiscale defects suppress propagation phonons. Here, origin anomalously is uncovered in Cd‐alloyed Mg 3 Sb 2 Zintl compounds through complementary bonding...
Abstract Nonfullerene polymer solar cells develop quickly. However, nonfullerene small‐molecule (NF‐SMSCs) still show relatively inferior performance, attributing to the lack of comprehensive understanding structure–performance relationship. To address this issue, two isomeric acceptors, NBDTP‐F out and in , with varied oxygen position benzodi(thienopyran) (BDTP) core are designed synthesized. When blended molecular donor BDT3TR‐SF, devices based on acceptors disparate photovoltaic...
Efficient cathode interfacial layer-free organic solar cells are achieved, which deliver a power conversion efficiency of 12.3%.
All-optical modulators based on graphene show great promise for on-chip optical interconnects. However, the modulation performance of all-optical is usually interaction between and fiber, limiting their potential in high integration. Based this point, an modulator a dielectric-loaded waveguide (DLW) with graphene-silicon heterojunction structure (GSH) proposed. The DLW raises mode, which provides strong light-graphene interaction. Sufficient tuning Fermi energy beyond Pauli blocking effect...
We present and demonstrate a highly birefringent fiber Bragg grating (Hi-Bi FBG) that was fabricated using femtosecond laser to induce sawtooth stress region near the FBG. The FBG is with point-by-point method, while generated in cladding along path. This stressor can introduce an anisotropic asymmetric refractive index profile cross-section of fiber, resulting additional birefringence up 2.97 × 10−4 axial direction central wavelengths Hi-Bi at fast slow axes exhibit different sensitivities...
To meet the imminent requirement of fullerene‐free electron acceptors, a new ladder‐type heteroarene benzodi(thienopyran) (BDTP) is designed and synthesized by embedding pyran rings in [2,2‐(2,5‐dialkyloxy‐1,4‐phenylene)dithiophene] (PDT) for organic photovoltaic (OPV) applications. Originating from strong p–π conjugation oxygen atom rings, electron‐rich BDTP results BDTP‐cored molecular acceptor, NBDTP, with intramolecular charge transfer effect. With sp 3 carbons NBDTP have flexibility...
The GMAW process for titanium alloy is not commonly applied within the industry due to occurrence of severe spatter. This research endeavors elucidate mechanism underlying spatter formation and explore efficacious strategies suppress experimental results demonstrated existence two distinct types: large small particles. high- speed images synchronous electrical signals were utilized determining mechanism, with force analysis serving mutually validate inferences. particles originated from...
Control of molecular ordering and packing π-conjugated molecules in the solid state is crucial for enhancing charge transport properties organic electronics.
In this mymargin letter, we experimentally demonstrated a 1550-nm high-power single-longitudinal-mode (SLM) distributed feedback (DFB) semiconductor laser based on sampled moiré grating (SMG). By designing the sampling structure with micrometer scale, (MG) can be equivalently realized along cavity. Then, reduce coupling coefficient near facet so as to increase output power. The cavity length and ridge width of fabricated are 1.0 mm <inline-formula...
Compact hyperspectral imaging spectrometers with a wide field of view (FoV) have significant application value. However, the aberration such is sensitive, and varies for different wavelengths when reducing spectrometer volume. It difficult to explain variation in using traditional theory. In this study, we extend vector theory (VAT) Offner spectrometer. We deduce expression decenter based on real ray-trace method. Furthermore, derive third-order system. Subsequently, some common phenomena...
Abstract n‐Type Mg 3 (Sb, Bi) 2 shows great prospects in mid‐temperature power generation due to its extraordinary thermoelectric (TE) performance, low‐cost, and environment‐friendly attributes. However, practical application is hindered by the slow progress of p‐type counterpart. Herein, a high ZT ≈0.9 at 773 K achieved for Na 0.01 1.7 Zn 1 Yb 0.25 Sb through manipulation electronic transport properties. Then thermal expansion matched barrier material Fe 75 25 subtly obtained . The contact...
We demonstrated all-optical intensity modulator based on polarization-dependent graphene-covered microfiber (GMF) waveguide. By controlling the polarization mode of incident light, a greatly adjustable enhanced interaction between propagating light and graphene can be obtained via evanescent field microfiber. employing 980-nm pump 1550-nm signal in continuous wave, strong light–graphene enables maximum modulation depth ∼20.86 dB, by pumping 980 nm wave pulses, we temporal response...
We design a unique external cavity configuration and present an ultra-narrow linewidth diode laser (ECDL) employing wide interference filter diffraction grating. The is for suppressing the noise floor, grating used mode selection. combination of can effectively use narrow without significant reduction in optical gain. Lorentz reaches 13.6 kHz at wavelength 1555 nm. ECDL be tuned by rotating grating, tunable range 40 nm achieved with maximum output power 25.6 mW injection current 200 mA. In...
Small molecule solar cells (SMSCs) lag a long way behind polymer cells. A key limit is the less controllable morphology of small materials, which can be aggravated when incorporating anisotropic nonfullerene acceptors. To fine-tune blending within SMSCs, π-conjunction curtailing design applied, produces efficient benzodithionopyran-cored molecular acceptor for SMSCs (NF-SMSCs). When blended with donor BDT3TR-SF to fabricate NF-SMSCs, curtailed NBDTP-M obtains an optimal power conversion...