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The n-type Si-based materials applied on the front surface of IBC-SHJ solar cells

Chinese Physics B 2019年第9期28卷 353-358页

作者： Jianhui Bao Ke Tao Yiren Lin Rui Jia Aimin Liu School of Microelectronics Dalian University of TechnologyDalian 116024China Institute of Microelectronics of Chinese Academy of Sciences Beijing 100029 China School of Physics&Optoelectronic Engineering Dalian University of TechnologyDalian 116024China

interdigitated back contact silicon hetero-junction(IBC-SHJ) solar cells exhibit excellent performance owing to the IBC and SHJ *** front surface field(FSF) layer composed of electric field passivation and chemical passivation has been proved to play an important role in IBC-SHJ solar *** electric field passivated layer n^+-a-Si: H, an n-type Si alloy with carbon or oxygen in amorphous phase, is simulated in this study to investigate its effect on *** is indicated that the n^+-a-Si: H layer with wider band gap can reduce the light absorption on the front side efficaciously,which hinders the surface recombination of photo-generated carriers and thus contributes to the improvement of the short circuit current density *** highly doped n^+-a-Si: H can result in the remakable energy band bending, which makes it outstanding in the field passivation, while it makes little contribution to the chemical *** is noteworthy that when the electric field intensity exceeds 1.3 × 10^5 V/cm, the efficiency decrease caused by the inferior chemical passivation is only 0.16%.In this study, the IBC-SHJ solar cell with a front n^+-a-Si: H field passivation layer is simulated, which shows the high efficiency of 26% in spite of the inferior chemical passivation on the front surface.

关键词： Si-based doped materials passivation interdigitated back contact silicon hetero-junction(IBC-SHJ) solar cell simulation

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Sol-Gel Relative Humidity Sensors: Impact of Electrode Geometry on Performance in Soil Suction Measurements

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Journal of Sensor Technology 2017年第1期7卷 1-23页

作者： Rafaela Cardoso Gabriele Sarapajevaite Oleksandr Korsun Susana Cardoso Laura Ilharco Instituto Superior Técnico (IST) Universidade de Lisboa Lisbon Portugal Civil Engineering Research Innovation and Sustainability (CERIS) Institute of Construction Structures and Territory of IST (ICIST) Lisbon Portugal INESC-MN Microsystems and Nanotechnologies Lisbon Portugal CQFM Centro de Química-Física Molecular Instituto Superior Técnico (IST) Lisbon Portugal

This paper describes the experimental procedure followed to fabricate and validate sol-gel based RH sensors which will be incorporated in soil specimens for standard laboratorial tests. It is the first time such sensors were used for soil suction measurement. They are microfabricated relative humidity sensors (footprint area 11,000 μm × 22,000 μm) operating based on changes in electrical resistivity detected by a cerium doped silica titania film deposited using a sol-gel technique. Their design required gathering experts in several engineering specialties. The working principle of the sensors is based on water vapour equilibrium between the air in the soil and in the sol-gel pores, due to the contact between the two porous materials. The spacing between interdigitated aluminium electrodes was optimized to improve the sensing properties of the sol-gel. The calibration of the different prototypes was done against compacted clay, varying the spacing between 100 and 700 μm. The sensors were also incorporated in soil samples for suction measurement during wetting and drying paths. They were validated by comparing the readings with those from a water dew point potentiometer. From this study it was possible to determine the optimum electrodes spacing of 200 μm. Error was explained by sol-gel heterogeneity effect and by the resolution of the sensing area provided by the electrodes spacing. When comparing with other sensors operating inside soil specimens in standard laboratorial tests, these sol-gel sensors extend the operation range available with the alternative technologies: while conventional tensiometers measure suction ranges from 0 to 1.8 MPa, our sensors demonstrate good results between 1 to 10 MPa (and higher).

关键词： Microfabricated interdigitated Electrodes Humidity Sensors Suction Unsaturated Soils

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Microchip Electrode Development for Traveling wave Dielectrophoresis of Non-Spherical Cell Suspensions

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Engineering（科研） 2012年第10期4卷 88-93页

作者： Sakshin Bunthawin Jatuporn Kongklaew Adisorn Tuantranont Kata Jaruwongrangsri Thitima Maturos Biotechnology of Electromechanics Research Unit Science of Physics Faculty of Technology and Environment Prince of Songkla University Kathu Phuket 83120 Thailand Nano-Electronics and MEMs laboratory National Electronics and Computer Technology Center Pathumthani 12120 Thailand

A microchip interdigitated electrode with a sequential signal generator has been developed for traveling wave dielectrophoresis (twDEP) of biological cell suspensions. The electrode was fabricated on a microscope glass slide and coated with a 0.5 μm thickness of gold through a sputtering technique which was designed for large-scale inductions of cells rather than for individual cells as in previous versions of our device. As designed for a representative cell size of 10 μm, the electrode array was 50 μm in width to allow large numbers (>106) of cells to be processed. The sequential signal generator produces an arbitrary AC quadrature-phase to generate traveling electric field for a microchip interdigitated electrode. Each phase signal can be automatically altered and alternated with the other phases within interval time of 0.01-30 seconds (controlled by programming). We demonstrate the system could be used to estimate the dielectric properties of the yeast Saccharomyces cerivisiae TISTR 5088, the green alga Tetraselmis sp. and human red blood cells (HRBCs) through curve-fitting of dielectro- phoretic velocities and critical frequencies.

关键词： Traveling wave Dielectrophoresis Microchip interdigitated Electrode Cell Suspensions Dielectric Properties

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Trace Level Gas Sensing Characteristics of Nano-Crystalline Silver Decamolybdate

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Soft Nanoscience Letters 2013年第4期3卷 39-42页

作者： Sunasira Misra Venkataraman Jayaraman Thiagarajan Gnanasekaran Chemistry Group Indira Gandhi Centre for Atomic Research Kalpakkam India. Department of Chemistry C.V. Raman College of Engineering Bhubaneswar India

A soft-chemical method has been developed for the synthesis of nano-crystalline powders of silver decamolybdate. Gas sensing characteristics of this composition both in porous pellet and thin film configurations were investigated. The compound Ag6Mo10O33 was found to sense selectively ammonia at 503 K. Above 503 K it has significant cross sensitivity to petroleum gas (PG). Spin coated thin films exhibited selective sensing towards PG.

关键词： Soft-Chemical Method Silver Decamolybdate Nano Crystals Spin Coated Thin Film interdigitated Platinum Electrode Gas Sensor

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Effect of lnterdigitated Phase of DPPG Bilayer on (Ca^(2+)+Mg^(2+))-ATPase From Sarcoplasmic Reticulum of Rabbit Muscle

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Chinese Science Bulletin 1993年第14期38卷 1206-1210页

作者：王平原陈建文黄芬 Institute of Biophysics Academia Sinica Beijing 100101 PRC

Since 1935, cell. membranes or plasma membranes have been recognized to contain a continuously self-enclosed two-dimensional structure with a thickness equal to the dimension of two lipid molecules. With the foundation of the fluid mosaic model of membranes in 1972 and the research of lipid polymorphism, some basic structures of biological membranes have been clarified. Recently, two broad categories of bilayers have been recog-

关键词： interdigitated structure polymyxin B(PMB) vesicles.

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