A5046882002- Plasmonic and Surface Plasmon Research
- Photonic Crystals and Applications
- Thermal Radiation and Cooling Technologies
- Optical Coatings and Gratings
- Photonic and Optical Devices
- Thin-Film Transistor Technologies
- Organic Light-Emitting Diodes Research
- Perovskite Materials and Applications
- Conducting polymers and applications
- Quantum Dots Synthesis And Properties
- Near-Field Optical Microscopy
- Graphene research and applications
- Organic Electronics and Photovoltaics
- Gold and Silver Nanoparticles Synthesis and Applications
- Silicon Nanostructures and Photoluminescence
- GaN-based semiconductor devices and materials
- CCD and CMOS Imaging Sensors
- Semiconductor Quantum Structures and Devices
- Molecular Junctions and Nanostructures
- Silicon and Solar Cell Technologies
- Nanowire Synthesis and Applications
- Semiconductor materials and devices
- Advancements in Semiconductor Devices and Circuit Design
- Ga2O3 and related materials
- Semiconductor Lasers and Optical Devices
National Cheng Kung University
2025
Purdue University West Lafayette
2025
Jimei University
2021-2023
National Taipei University of Technology
2020-2023
Bridge University
2023
Zhejiang University
2023
National Sun Yat-sen University
2012-2017
National Kaohsiung University of Applied Sciences
2017
National Taiwan University
2006-2012
Institute of Electronics
2006-2011
The blackbody radiation spectrum is fundamental to any thermal emitter. However, by properly designing the emitter structure, a narrow bandwidth and high power infrared source can be achieved. This invention consists of triple layer structure sandwiching dielectric SiO2 between two Ag metal films on Si substrate. top perforated periodic holes. When device was heated, background suppressed bottom whose emissivity very low. generated in resonant Ag∕SiO2 Ag/air surface plasmon polaritons are...
In this letter, the effect of extraordinary transmission periodic metal hole arrays is directly integrated into quantum dot infrared photodetector with broadband response. It found that detector response strongly modulated by from excitation surface plasmon.
The reflection and emission properties of an infrared emitter, which is a plasmonic multilayer structure consisting relief metallic grating, waveguide layer, substrate are investigated both experimentally theoretically. A localized surface plasmon polariton (SPP) mode angular-independent in almost the full range incident angles observed. thermal this also measured. It found that peak coincides with SPP mode. In addition, spectrum emitter can be predicted by investigating reflectance spectrum.
In this work, the transmission through cross shaped hole with different sizes but same lattice constant was measured polarized light to investigate variation of localized charge oscillation around hole. The comparison between intensities similarly arranged periodic array shapes, i.e., cross, square, and rectangular, were also measured. gives rise a larger than those perforated square or rectangular
The reflection dispersion relation and emission spectra of Ag∕SiO2∕Ag trilayer plasmonic thermal emitters with different lattice constant Ag line width were investigated. top film is perforated parallel line-shape hole array. induced Ag∕SiO2 surface plasmons at both bottom interface are found coupled together. coupling effect results in the localized plasmon polaritons confined which exhibit Fabry–Pérot resonance. peak position coincides minimum shifts to long wavelength as increases, proves...
The reflection and emission spectra of Ag/SiO2/Ag trilayer plasmonic thermal emitters with different SiO2 thicknesses are investigated. top Ag film is perforated periodic slits. It found that the coupling surface plasmons at bottom Ag/SiO2 interface results in redshift peaks. In this emitter, electromagnetic field exhibits either Fabry–Pérot resonance or propagating depending on thickness layer. By varying layer, transition from localized to grating-coupled plasmon modes observed.
The experimental results of dispersion relations and thermal emittance spectra a metal/insulator/metal (MIM) structure with rectangle metallic patch arrays as top layer are demonstrated. exhibits wide-angle, multipeak polarized emission characteristics caused by Fabry-Pérot type resonances surface plasmons. Emission modes in x- y-polarization totally distinct, their position depends on the width length rectangular patch. Therefore designing mode positions has two degrees freedom could be...
The hydrogenated amorphous silicon thin film solar cell fabricated on the glass substrate patterned by hexagonal nanocylinder array prepared self-assembled SiO2 nanoparticles and nanosphere lithography was investigated. It is demonstrated that short-circuit current of with 65 nm depth increases from 12.3 to 14.4 mA/cm2, efficiency 5.18% 6.59% as compared flat cell. These phenomena suggest both effective light trapping localized surface plasmon lead significant improvement absorption in cells.
The emission spectra of Ag∕SiO2∕Ag trilayer plasmonic thermal emitters with various SiO2 thicknesses were investigated. By analyzing the relationship between peaks and SiO2, coupling surface plasmons two silver films in a emitter is demonstrated length determined as well. Furthermore, dispersion relation detected by measuring reflection incident angles. This confirms that main mechanism involved due to excitation plasmons.
The emission spectra of the trilayer Ag/dielectric/Ag plasmonic thermal emitter (PTE) with different lattice type, hole shape, and dielectric material were investigated. It is found that position number peak PTE are determined by type not shape materials. hexagonal generates only one strong (1,0) Ag/dielectric peak, whereas a similar square two (1,1) peaks, their relative intensities follow blackbody radiation law. This phenomenon suggests coupling Ag/air modes.
This work describes innovative waveguide thermal emitters with top metal perforated subwavelength holes arranged in a short period to eliminate Bragg scattered modes (WMs) and surface plasmon polariton (SPP) modes. A metal-dielectric-metal parallel-plate exhibits high output intensities emission peaks narrow bandwidth the midinfrared region under heat treatment. The redundant SPP WMs are filtered automatically by shifting them wavelength due where blackbody radiations too weak appear.
This investigation examines the extraordinary light transmission through periodic hexagonally ordered aluminum hole arrays on silicon substrates. The holes are circular and with various diameters were fabricated. spectra measured as a function of incident angle beam. It is observed that peak splits into two when diameter close to half lattice constant. At larger angles, six degenerate (1,0) Al∕Si surface plasmon modes split four or three depending symmetry axis, even higher order can be...
Polarized infrared thermal emitters consisting of a waveguide emitter combined with silver grating structure were studied. For device containing perforated film under the grating, polarized light was emitted only when wavelength satisfied standing wave condition, therefore broad bandwidth SiO2 phonon vibration modes suppressed in radiation spectrum. The ratio different thickness investigated and highly up to 0.875 achieved. This study demonstrated that integrated can be used as narrow source.
This paper reports the optical properties of Al∕Si structure and trilayer Ag∕SiO2∕Ag plasmonic thermal emitter with different concentric metal rings on top film. It is found that when width smaller than 40% period (=gap+metal width), (1,0) surface plasmon leads to a maximum in transmission spectra; otherwise, opposite observed. The dispersion relations emission spectra emitters were investigated. peaks are independent gap redshift as annular increases. phenomenon suggests excitation...
While broad band infrared has a number of biomedical applications, the effects with specific wavelengths on biomolecule remain unclear. In this study, narrow plasmonic thermal emitters peak from 3.0 to 5.0 μm were developed irradiate Escherichia coli (E. coli) cultures for 24 h. It was found that at 4.0, 4.5, and μm, they could promote growth cells. Systems biology analyses performed investigate underlying molecular mechanisms. Furthermore, (4.0-5.0 μm) induced expression transporters...
This work presents a method for obtaining color-converted red light source through combination of blue GaN light-emitting diode and fluorescent color conversion film perovskite CsPbI
The enhanced optical transmission through the annular aluminum metal with different number of concentric rings arranged in a long-range periodic structure on silicon substrate is investigated. measured spectra demonstrate that surface plasmon modes depend sensitively structural parameters metallic rings. degenerate (1,0), (1,1), and (2,1) Al∕Si are determined by long periodicity structure. localized cavities length can be observed this as well. These phenomena suggest both plasmons cavity...
The experimental results of linear polarized light transmitting through an array Archimedean spiral slots perforated on a thin metal film in the far-infrared region are demonstrated. wavelength selective transmission spectra examined, and polarization shape resonance will lead to rotation. sign rotation not only depend handedness but also related specific initial position. This phenomenon is different from conventional optical activity three-dimensional chiral molecules rather similar...
The transmission spectra of bowtie aperture consisting opposing triangular holes arranged in rectangular array on silver/silicon structure were investigated. It is found that the second order surface plasmon polaritons mode much stronger than fundamental one. In addition, by increasing separation and angles tips or silver film thickness, modes decrease gradually. These phenomena suggest magnetic field coupling between metal which results higher enhancement.
The enhanced transmission of higher order plasmon modes with random gold nanoparticles embedded in periodic hole arrays using asymmetric pair aperture as a unit is investigated the midinfrared regime. Different thicknesses film were deposited inside holes and then annealed to form randomly sized distributed nanoparticles. thin exhibit significantly after thermal annealing. enormous local electric field around enhances scattering effect that contributes infrared transmission. This unique...
The zero-order transmission of radiation through a metal/dielectric structure perforated with square hole arrays is strongly enhanced when incident light resonates surface plasmons (SPs). Surprisingly, double layer, such as Ag∕SiO2, fabricated on silicon substrate, the Ag∕Si SP mode by coupling Ag and Si across intermediate dielectric film has been found. It named remotely coupled plasmon. intensity investigated function SiO2 thickness. lengths between in order to form are determined well,...
A plasmonic thermal emitter with a periodic block pattern as the top layer was investigated. It is found that by adjusting length and orientation of rectangle metallic islands inside pattern, three polarization-dependent peaks can be obtained in radiation spectra. The individual mode extracted according to different polarizations an external polarizer. In addition, device designed emit desired wavelength range tuning dimensions pattern.
A two-colored plasmonic thermal emitter is fabricated with a multilayer structure, in which the dielectric layers are sandwiched between two Ag films. The top film perforated periodically holes squared array. radiation of layer resonates metal films, and surface plasmon polaritons induced on then converted to light radiation. Furthermore, if single replaced double layers, an emission peak that corresponds remotely coupled found emitter, coupling length less than 500nm.