搜索结果: 1-15 共查到“光学仪器及技术 Silicon”相关记录23条 . 查询时间(0.105 秒)
Absorption Enhancement in Ultrathin Crystalline Silicon Solar Cells with Antireflection and Light-Trapping Nanocone Gratings
Solar cells light trapping antireflection crystalline silicon absorption enhancement nanocone gratings
2012/8/7
Enhancing the light absorption in ultrathin-film silicon solar cells is important for improving efficiency and reducing cost. We introduce a double-sided grating design, where the front and back surfa...
High-Effi ciency Amorphous Silicon Solar Cell on a Periodic Nanocone Back Refl ector
Amorphous Silicon Solar Cell Periodic Nanocone
2012/8/7
hin-fi lm silicon solar cells, including hydrogenated amorphous silicon (a-Si:H) single-junction and amorphous/microcrystal line silicon (a-Si:H/ μ c-Si:H) tandem-junction solar cells, are promi...
High-Performance Low-Loss Silicon-on-Insulator Microring Resonators using TM-polarized Light
Optical devices Resonators
2011/5/22
Microring resonators on SOI are investigated for both orthogonal polarizations. By demonstrating low-loss (1.94dB/cm) microring resonators with an intrinsic Q up to 340000 we proof that using TM-polar...
A Polarization Diversity Circuit for Silicon Photonics
Silicon Photonics Polarization Diversity Circuit
2011/5/15
A polarization diversity circuit in silicon waveguide was developed. The polarization dependent loss is 0.5dB. The insertion loss from the polarization diversity components is 3dB. The extinction rati...
Fully Reconfigurable Silicon Photonic Lattice Filters with Four Cascaded Unit Cells
Reconfigurable Silicon Photonic Lattice Filters Four Cascaded
2010/6/10
We present a fully-reconfigurable CMOS-compatible silicon-photonic lattice-filter with four cascaded unit cells consisting of resonant rings and Mach-Zehnder interferometers. The measurements show hig...
Silicon Quantum Well Light-Emitter for Optical Interconnections
Quantum dot devices Light-emitting diodes Microcavity devices
2010/6/8
We have developed all-silicon based light-emitter for optical interconnections. The relatively short florescent lifetime of 4.2 ns in a silicon quantum well makes direct modulations at 10 Mbps accessi...
Silicon Waveguide Coupled Resonator Infrared Detector
Photo-detectors Integrated optics devices Infrared Silicon
2010/6/5
We present a silicon photodiode implemented in a waveguide coupled ring resonator structure. Infrared detection was achieved by Si + ion implantation. A15μm-radius ring-based detector demonstrated an ...
25 GHz Operation of Silicon Optical Modulator with Projection MOS Structure
Waveguide modulators Modulation Waveguides
2010/6/5
We report a high-speed and compact silicon optical modulator based on the free carrier plasma dispersion in a silicon rib waveguide with a MOS (metal-oxide-semiconductor) junction structure.To achieve...
Discrete Parametric Band Conversion in silicon for mid-infrared Applications
Waveguides Nonlinear optics parametric processes.
2010/6/4
Mid-infrared has great potential for silicon photonics. Engineering the dispersion by IR compatible cladding materials and waveguide dimensions enable broadband discrete wavelength conversion. We show...
Detection and Localization of Defects in Monocrystalline Silicon Solar Cell
solar cell electric signals combination of electric and optical methods
2009/12/14
Near-surface defects in solar cell wafer have undesirable influence upon device properties, as its efficiency and lifetime. When reverse-bias voltage is applied to the wafer, a magnitude of electric s...
Optical Absorption Enhancement in Amorphous Silicon Nanowire and Nanocone Arrays
Optical Absorption Enhancement Amorphous Silicon Nanowire Nanocone Arrays
2009/8/10
Hydrogenated amorphous Si (a-Si:H) is an important solar cell material. Here we demonstrate the fabrication of a-Si:H nanowires (NWs) and nanocones (NCs), using an easily scalable and IC-compatible pr...
Compact Passive Devices in InP Membrane on Silicon
Compact Passive Devices Membrane Silicon
2009/7/15
The high vertical index contrast and the small thickness of thin InP membranes (200nm) bonded with BCB allow the achievement of very small devices. In this paper we will present some performances of s...
Silicon Photonic Biosensors for Lab-on-a-Chip Applications
Silicon Photonic Biosensors Lab-on-a-Chip Applications
2009/5/19
In the last two decades, we have witnessed a remarkable progress in the development of biosensor devices and their application in areas such as environmental monitoring, biotechnology, medical diagnos...
Photonic Integration on the Hybrid Silicon Evanescent Device Platform
Photonic Integration Hybrid Silicon Evanescent Device Platform
2009/5/19
This paper reviews the recent progress of hybrid silicon evanescent devices. The hybrid silicon evanescent device structure consists of III-V epitaxial layers transferred to silicon waveguides through...
Three-Dimensional Silicon-Germanium Nanostructures for CMOS Compatible Light Emitters and Optical Interconnects
Three-Dimensional Silicon-Germanium Nanostructures CMOS Compatible Light Emitters Optical Interconnects
2009/5/19
Three-dimensional SiGe nanostructures grown on Si (SiGe/Si) using molecular beam epitaxy or low-pressure chemical vapor deposition exhibit photoluminescence and electroluminescence in the important sp...