Search results for: T. Shirata

Items from 1 to 10 out of 10 results

chapter

Dependence of mechanical on position in silicon ingoto by evaluating B and Ge codoped silicon

T. Shirata, T. Sato, T. Ando

2013 Transducers & Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII) > 1055 - 1058

2013 Transducers & Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII)

This paper reports characterization of mechanical properties of single crystal silicon with heavily-codoped boron (B) and germanium (Ge) as dopant impurities. We prepared three types of B and Ge codoped silicon sliced from the different ingot portion. The silicon device for tensile test was fabricated by using two steps of DRIE without high-temperature process up to 1000 °C. The experimental results...

article

Influence of atypical pluviosity on phytoplankton assemblages in a stretch of a large sub-tropical river (Brazil)

Gilmar Perbiche-Neves, Mateus F. Ferrareze, Moacyr Serafim-Júnior, Madalena T. Shirata, more

Biologia > 2011 > 66 > 1 > 33-41

This study aimed to evaluate the influence of alterations in pluviosity and ecological variables on microphytoplankton (> 20 μm) structure (composition, richness, diversity, and abundance) and its biomass (chlorophyll-a), comparing different regions in a stretch of the low Iguaçu River and in some tributaries. Phytoplankton was sampled in 10 stations (5 in Iguaçu River and 5 in tributaries) during...

chapter

Evaluation of X-ray reflectivity of a MEMS X-ray optic

I. Mitsuishi, Y. Ezoe, M. Koshiishi, M. Mita, more

2008 IEEE/LEOS International Conference on Optical MEMs and Nanophotonics > 104 - 105

2008 IEEE/LEOS Internationall Conference on Optical MEMs and Nanophotonics

X-ray reflectivity of an ultra light-weight X-ray optic using MEMS technologies was measured in two different energies (0.28 keV and 1.49 keV). The obtained reflectivities can be understood by considering the mirror surface structures.

article

Study on the properties and charge generation in dye-sensitized n-TiO2|dye|p-CuI solid state photovoltaic solar cells

M. Rusop, T. Shirata, P.M. Sirimanne, T. Soga, more

Applied Surface Science > 2006 > 252 > 20 > 7389-7396

Transparent semiconducting copper iodide (CuI) films were prepared by XeCl Excimer laser and their characteristics are investigated. These films exhibited optical transmittance over 80% in the wavelength range from 400 to 900nm and minimum resistivity of about 2kΩcm ⁻¹ . The optical absorption of the these films shows a remarkable blue shift compared to that of polycrystalline of CuI, which...

article

Characterization of CuI thin films prepared by different techniques

P.M. Sirimanne, M. Rusop, T. Shirata, T. Soga, more

Materials Chemistry and Physics > 2003 > 80 > 2 > 461-465

Thin films of CuI were prepared by different techniques and their characteristics were studied. A remarkable blue shift in the onset of the optical absorption of thin CuI films is observed compared to that of polycrystalline CuI. These films exhibited an optical transmittance of over 80% in the wavelength range 400-900nm. The conductivity and the intensity of cathodoluminance of the films vary with...

article

An approach for utilization of organic polymer as a sensitizer in solid-state cells

P.M. Sirimanne, T. Shirata, L. Damodare, Y. Hayashi, more

Solar Energy Materials and Solar Cells > 2003 > 77 > 1 > 15-24

A solid-state cell was fabricated by sandwiching poly[2-methoxy-5(2'-ethyl-hexyloxy)-p-phenylene vinylene] (MEH-PPV) in between micro-porous n-TiO ₂ and p-CuI films. The photo-excited polymer is found inject electrons into the conduction band of n-TiO ₂ and holes into the valance band of p-CuI. Maximum open-circuit voltage of 400mV and short-circuit current of about 0.3mAcm ^- ...

chapter

Properties of CuI films in the power output of TiO/sub 2/|Dye|CuI cells

M. Rusop, T. Shirata, Prasad Manjusri Sirimanne, T. Soga, more

3rd World Conference onPhotovoltaic Energy Conversion, 2003. Proceedings of > 1 > 140 - 143 Vol.1

3rd World Conference on Photovoltaic Energy Conversion

The transparent semiconducting copper iodide (CuI) films were deposited by pulsed laser deposition and their structural and optoelectrical properties in the power output of TiO/sub 2/|Dye|CuI cells are reported. These CuI films exhibited optical transmittance over 80% in the wavelength range from 400 to 900 nm and minimum resistivity of about 2 k/spl Omega/-cm. An efficient charge generation is observed...

article

1P-0285 Clinical utility and an approach to estimate postprandial hypertriglyceridemia by a newly designed oral fat-loading test

A. Hirata, M. Igarashi, T. Yamauchi, H. Yamaguchi, more

Atherosclerosis (Supplements) (Component) > 2003 > 4 > 2 > 82

article

Characterization of transparent conducting CuI thin films prepared by pulse laser deposition technique

P.M. Sirimanne, M. Rusop, T. Shirata, T. Soga, more

Chemical Physics Letters > 2002 > 366 > 5-6 > 485-489

Thin films of CuI were prepared by pulse laser deposition technique and their characteristics are studied. These films exhibited optical transmittance over 80% in the wavelength range 400-900 nm and minimum resistivity of about 2 K Ω cm. Blue shift in the onset of optical absorption of the CuI films is observed to that of polycrystalline powder of CuI.

article

Charge Generation in a Dye-Sensitized Solid-State Cell under Different Modes of Illumination

P.M. Sirimanne, T. Shirata, T. Soga, T. Jimbo

Journal of Solid State Chemistry > 2002 > 166 > 1 > 142-147

A dye-sensitized solid-state cell was fabricated by sandwiching ruthenium bypridyl complex in between porous TiO₂ and CuI films. Cis-dithiocyanate-bis(2,2′-bipyridyl -4-4′-dicarboxylate) ruthenium (II) exhibited excellent performance among the dyes tested for TiO₂∣dye∣CuI cell. Different mechanisms are proposed for charge generation of the cell under different modes of illumination. A high incident...

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