- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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Chemically Interconnected Thermotropic Polymers for Transparency-Tunable and Impact-Resistant Windows
摘要： Thermotropic polymers with the capability of thermally tuning transparency are widely applied in smart windows and energy-saving windows, playing a critical role in enhancing comfort level and energy efficiency of indoor spaces. Usually, thermotropic polymer systems are constructed by physically dispersing phase transition materials in transparent hosting materials. However, bad interfaces universally exist in these systems, resulting in poor mechanical properties, weak interfaces to substrates, or bad long-term stability. Herein, we demonstrate a novel chemically interconnected thermotropic polymer, which is obtained by reacting dodecanedioic acid (DDA) with glycerol. In the system, some of DDA molecules were crosslinked to form a polyester network, poly(glycerol-dodecanoate) (PGD). Other grafted but non-crosslinked DDA molecules form semi-crystalline domains which possess a solid-liquid phase transition within the PGD matrix. The phase transition offers the resulting hybrid materials with tunable optical transparency. The PGD-DDA system shows stable performance after 100 heating-cooling cycles. In addition, when applied for window coating, it results in tough interfacial bonding to glass substrates with toughness of > 6910 J m-2 below its transition temperature and > 135 J m-2 above its transition temperature. It increases the impact-resistance of the window by multiple times.
关键词： chemical interconnection,tough interfacial bonding,impact-resistant,smart windows,thermotropic polymers
更新于2025-09-23 15:22:29
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27 GHz Silicon-contacted waveguide-coupled Ge/Si avalanche photodiode
摘要： We report a silicon-contacted Ge/Si avalanche photodiode with RF gain of 11 and a bandwidth of 27 GHz at -12 V operating at 1310 nm. The device is fabricated in an established Si photonics platform without additional process complexity and contacts only on Si. Wafer-scale performance data are presented confirming the reproducibility and the manufacturability of the device. Wide open eye diagrams are for 25, 40 and 50 Gbps data-rates. The demonstration of such avalanche photodiode shows great potential for improving optical link margins for optical transceivers operating at 400 Gb/s and beyond.
关键词： Silicon Photonics,Optical Interconnection,Germanium,Photodetectors
更新于2025-09-23 15:21:01
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[IEEE 2019 IEEE CPMT Symposium Japan (ICSJ) - Kyoto, Japan (2019.11.18-2019.11.20)] 2019 IEEE CPMT Symposium Japan (ICSJ) - Polymer Optical Coupling Device with Single Mode Fiber for Silicon Photonics
摘要： Optical interconnect has attracted much attention as a possible solution to solve the bottleneck of conventional electric interconnect for realizing high bit rate transmission network. The optical interconnect requires high efficiency and easy optical coupling between optical wiring and optical fibers. Especially in these days, expansion of single mode fiber in optical interconnect and silicon photonics (SiPh) devices requires new coupling scheme between these devices. In this paper, we propose a novel coupling device which is composed with a microlens and a pillar having about 10?m diameter on the end face of SMF. This is fabricated by using self-written waveguide (SWW) method with UV-curable resin.
关键词： Self-Written Waveguide,Microlens,Silicon Photonics,UV-curable resin,Pillar,Optical Interconnection
更新于2025-09-23 15:21:01
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Robust crystalline silicon photovoltaic module (c-Si PVM) for the tropical climate: future facing the technology
摘要： A critical impediment to the adoption and sustained deployment of crystalline silicon photovoltaic modules (c-Si PVMs) in the tropical climate is the accelerated degradation of their interconnections. At 40.7% c-Si PVM interconnect failure rate worldwide and significantly higher in the tropics. A review of impact of elevated ambient temperature operations on accelerated interconnection degradation is critical to achieving the system’s sustainability and reliability up to the 25-year design lifespan. This study reviews critical module’s operational parameters to advise on the future facing creation of robust module for the tropical region. Key areas reviewed include manufacturing process, solar cell efficiency, interconnection technology and R&D parameters. The review discusses the state-of-the-art in c-Si PVM interconnection technologies and propose back-junction-back-contact (BJ-BC) cell technology for adoption in the manufacture of the next generation of robust c-Si PVM for the tropics. The review findings provide insight into the future facing the robust c-Si PVM technology that is useful to the module design engineers.
关键词： Crystalline silicon photovoltaic module,elevated ambient temperature,interconnection failure,module life span
更新于2025-09-23 15:19:57
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[IEEE 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Munich, Germany (2019.6.23-2019.6.27)] 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Quantum Temporal Imaging with Finite Time Aperture
摘要： Balancing electricity supply and demand is a complex task. Renewable energy sources are often intermittent, while electrical loads vary throughout the day. This can result in an abundant supply that suppresses spot prices in one region, while another region simultaneously experiences tight supply margins and price spikes. Connecting these two regions through electrical interconnectors would enable greater utilization of renewable energy, but this can be expensive and is unfeasible for distant regions, such as between continents. However, datacenters are becoming ubiquitous around the world and are linked through fiber connections. This paper proposes a virtual interconnector (VIC) scheme using fiber to dynamically move energy demand, in the form of computation, to datacenters in other market regions with surplus low cost and renewable energy. This increases the global renewable penetration without requiring expensive grid interconnections. The associated benefits for the datacenter operator, the electricity grid controller, consumers, and the environment are discussed.
关键词： power system economics,load management,optical interconnections,power system control,Data warehouses,renewable energy sources,green computing,power system interconnection
更新于2025-09-19 17:13:59
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[IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Probabilistically shaped 100G IM-DD optical interconnection
摘要： In this paper, we present a review about our recent works optical interconnection applications. PS for PAM and DMT were introduced for achieving 100-Gbps over IM-DD VCSEL-MMF optical interconnection link.
关键词： IM-DD,100G,Probabilistic shaping,optical interconnection
更新于2025-09-16 10:30:52
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AIP Conference Proceedings [AIP Publishing INTERNATIONAL SYMPOSIUM ON GREEN AND SUSTAINABLE TECHNOLOGY (ISGST2019) - Perak, Malaysia (23–26 April 2019)] INTERNATIONAL SYMPOSIUM ON GREEN AND SUSTAINABLE TECHNOLOGY (ISGST2019) - Lead-free solders for ribbon interconnection of crystalline silicon PERC solar cells with infrared soldering
摘要： We report about the analysis of Pb-free, low-temperature solders for the ribbon-interconnection of PERC solar cells with an industrial infrared stringer. Five solders (SnPb, SnBi-A, SnBi-B, SnBiAg and a proprietary lead-free, low-temperature (PLFLT) alloy) are characterized with di?erential scanning calorimetry to determine the melting and solidi?cation temperature. It is found that SnBi-B, SnBiAg, and the PLFLT composition melt in a temperature range between 137 ?C to 171 ?C instead of a single temperature. Solidi?cation occurs at a 3 K to 11 K lower temperature (undercooling). Mono-crystalline silicon PERC cells are contacted using an industrial stringer. The microstructure of the solder bonds is investigated with scanning electron microscopy. For the SnBi-A-solder, large and brittle Bi-phases are identi?ed. The SnBi-B, SnBiAg and PLFLT solder show a ?ner grain structure. The added Ag in SnBiAg forms an intermetallic compound of Ag3Sn close to the Cu-core of the ribbon. The peel strength of the connected solar cells with the Pb-free solders is on average 1 N mm?1 or slightly higher. Some bonds show low adhesion. The observed fracture mode is mainly failure at the busbar metallization to solar cell irrespective of the solder type. However, the occasionally observed solder residues on the metallization clearly reveal brittle fracture for the Pb-free solders, which is not observed for SnPb. First reliability tests show similar degradation of 1 % to 2 % for all solders.
关键词： ribbon interconnection,infrared soldering,lead-free solders,crystalline silicon PERC solar cells
更新于2025-09-16 10:30:52
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High gain and wideband on-chip hybrid plasmonic V-shaped nano-antenna
摘要： In this paper, a wideband hybrid plasmonic V-shaped nano-antenna is proposed based on coupled hybrid plasmonic waveguide (CHPW) feeding to increase the surface plasmons propagation length. The CHPW specifications are investigated analytically and numerically to obtain the dispersion relation and propagation length by the genetic algorithm and finite element method, respectively. Moreover, the proposed V-shaped nano-antenna with the fractional bandwidth of ～86% and the maximum ef?ciency of 98% is able to receive/transmit optical signals at three telecommunication wavelengths of 850, 1310, and 1550 nm with the high realized gains of 10.5, 9.39, 9.05 dB, respectively. The shape of the radiation pattern, with a main lobe along the antenna axis, makes this antenna appropriate for point-to-point connections in inter- or intra-chip optical wireless links and networks, which is studied comprehensively in this paper. Furthermore, to obtain a high optical power signal and tune the antenna orientation, the performance of the antenna is investigated with two different types of array structure, single row and square and its applications for energy harvesting and beam steering are studied. The fabrication feasibility of the nano-antenna is realizable based on the complementary metal-oxide-semiconductor technology.
关键词： Energy harvesting,Optical nano-antenna,Wireless interconnection link,Coupled hybrid plasmonic waveguide
更新于2025-09-16 10:30:52
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[IEEE 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Fukuoka, Japan (2019.7.7-2019.7.11)] 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Silicon waveguide polarization beam splitter using reversed ???2 coupler structure
摘要： Balancing electricity supply and demand is a complex task. Renewable energy sources are often intermittent, while electrical loads vary throughout the day. This can result in an abundant supply that suppresses spot prices in one region, while another region simultaneously experiences tight supply margins and price spikes. Connecting these two regions through electrical interconnectors would enable greater utilization of renewable energy, but this can be expensive and is unfeasible for distant regions, such as between continents. However, datacenters are becoming ubiquitous around the world and are linked through fiber connections. This paper proposes a virtual interconnector (VIC) scheme using fiber to dynamically move energy demand, in the form of computation, to datacenters in other market regions with surplus low cost and renewable energy. This increases the global renewable penetration without requiring expensive grid interconnections. The associated benefits for the datacenter operator, the electricity grid controller, consumers, and the environment are discussed.
关键词： power system economics,load management,optical interconnections,power system control,Data warehouses,renewable energy sources,green computing,power system interconnection
更新于2025-09-16 10:30:52
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AIP Conference Proceedings [AIP Publishing INTERNATIONAL SYMPOSIUM ON GREEN AND SUSTAINABLE TECHNOLOGY (ISGST2019) - Perak, Malaysia (23–26 April 2019)] INTERNATIONAL SYMPOSIUM ON GREEN AND SUSTAINABLE TECHNOLOGY (ISGST2019) - Summary of the 8th Workshop on Metallization and Interconnection for Crystalline Silicon Solar Cells
摘要： This article gives a summary of the 8th Metallization and Interconnection workshop and attempts to place each contribution in the appropriate context. The field of metallization and interconnection continues to progress at a very fast pace. Several printing techniques can now achieve linewidths below 20 μm. Screen printing is more than ever the dominating metallization technology in the industry, with finger widths of 45 μm in routine mass production and values below 20 μm in the lab. Plating technology is also being improved, particularly through the development of lower cost patterning techniques. Interconnection technology is changing fast, with introduction in mass production of multiwire and shingled cells technologies. New models and characterization techniques are being introduced to study and understand in detail these new interconnection technologies.
关键词： metallization,crystalline silicon solar cells,plating technology,multiwire interconnection,shingled cells,interconnection,screen printing
更新于2025-09-12 10:27:22