Details of a Researcher - SAKODA Tatsuya

Fabrication of Electrode Groove on Silicon Solar Cell using High-Pressure Surface Discharge

HAMADA Toshiyuki, ARAKAWA Shunichi, OTSUBO Masahisa, SAKODA Tatsuya

IEEJ Transactions on Fundamentals and Materials 128 ( 12 ) 733 - 739 2008.12

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan

We proposed a low-cost plasma process technique to fabricate narrower front electrode grooves on a single crystalline silicon solar cell, in which the surface discharge operated at high-pressure etched the silicon nitride film of 150 nm thickness on a silicon layer. The results showed that the surface discharge could effectively etch the silicon nitride film in a short time and that a high etching rate more than 3000 nm/min was obtained. The narrow and uniform grooves with the width of less than 70 μm were obtained when the pressure in a chamber, the back electrode length and the etching time were 152 kPa, 2 mm and 10 s, respectively. The narrower electrode groove could be obtained when the back electrode length was short and the pressure was high.

DOI： 10.1541/ieejfms.128.733

Studies on Erosion of Silicone Rubber Exposed to Partial Arc Discharges

Kenich Haji, Yong Zhu, Masahisa Otsubo, Tatsuya Sakoda

Polymer Degradation and Stability 93 ( 12 ) 2214 - 2221 2008.12

Language：Japanese Publishing type：Research paper (scientific journal)

DOI： 10.1016/j.polymdegradstab.2008.05.025

Studies of Elastic Waves in Ethylene Propylene Rubber Using Acoustic Emission Sensor

Masanori Takaoka, Tatsuya Sakoda, Masahisa Otsubo, Shigeru Akaiwa, Masatoshi Iki, Shigeharu Nakano

IEEE (Institute of Electrical Engineers of Japan) Transaction on Fundamentals and Materials Society 128 ( 10 ) 641 - 646 2008.12

Language：Japanese Publishing type：Research paper (scientific journal)

DOI： 10.1541/ieejfms.128.641

Surface Modification of Carbon Electrode using Argon Plasma

Etching of Silicon Nitride Using Atmospheric Pressure Surface Discharge Plasma Reviewed

T. HAMADA, M. OTSUBO, T. SAKODA

The 7th International Conference on Materials Processing for AMFT7005_1 - 3 2008.11

Language：English Publishing type：Research paper (international conference proceedings)

D. Tashima, A. Sakamoto, M. Taniguchi, T. Sakoda, M. Otsubo

Vacuum 83 ( 3 ) 695 - 698 2008.10

Language：Japanese Publishing type：Research paper (scientific journal)

DOI： 10.1016/j.vacuum.2008.04.060

Development of Novel Ozonizer Using Micro-Barrier Discharges Formed in Water

Characteristics Evaluation of the Partial Arc Discharge and the Silicone Rubber Surface by Dynamic Drop Test Reviewed

Haji, Kenichi; Shiibara, Daiki; Otsubo, Masahisa, Sakoda Tatsuya, Yoshihiro Arata

2008 Annual Report Conference on Electrical Insulation Dielectric Phenomena 272 - 275 2008.10

Language：English Publishing type：Research paper (international conference proceedings)

Surface Modification of Carbon Electrode using Argon Plasma Reviewed

D. Tashima, A. Sakamoto, M. Taniguchi, T. Sakoda, M. Otsubo

Vacuum 83 ( 3 ) 695 - 698 2008.10

Language：English Publishing type：Research paper (scientific journal)

Development of Novel Ozonizer Using Micro-Barrier Discharges Formed in Water Reviewed

Tatsuya Sakoda, Yoshihisa Matsuda, Seiji Baba

Japanese Journal of Applied Physics 47 ( 10 ) 8030 - 8032 2008.10

Language：English Publishing type：Research paper (scientific journal)

Tatsuya Sakoda, Yoshihisa Matsuda, Seiji Baba

Japanese Journal of Applied Physics 47 ( 10 PART 1 ) 8030 - 8032 2008.10

Language：Japanese Publishing type：Research paper (scientific journal)

DOI： 10.1143/JJAP.47.8030

Electrochemical properties of modified carbon electrodes for electric double layer capacitors

Tashima D., Sakamoto A., Taniguchi M., Sakoda T., Otsubo M.

Surface and Coatings Technology 202 ( 22-23 ) 5560 - 5563 2008.8

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Surface and Coatings Technology

To improve capacitance and energy density of electric double layer capacitors (EDLCs), plasma surface treatments were carried out on surface of activated carbon sheets, and optimal conditions for the treatment were discussed. Operating gas pressure of argon was 20 Pa, and activated carbon sheets were set up so that they were covered with the dc glow discharge at 70 W. Electrochemical properties, including cyclic voltammetry (CV) and cole-cole plot of EDLCs in organic electrolyte, were examined. The results showed that capacitance of the plasma-treated EDLC increased to 11% in comparison with that of untreated one. The enhancement in specific capacitance was mainly attributable to increasing of ratio of surface area of the activated carbon sheets. © 2008.

DOI： 10.1016/j.surfcoat.2008.06.147

Optimization of Convex Electrode Geometry for Surface Discharge used for Fabrication of the Electrode Groove on Solar Cells

T. Hamada, T. Sakoda, M. Otsubo, K. Matsui and K. Nagasawa

Surface & Coating Technology 202 ( 22-23 ) 5405 - 5409 2008.8

Language：Japanese Publishing type：Research paper (scientific journal)

DOI： 10.1016/j.surfcoat.2008.06.167

Characteristics of On-line Prolonged Partial Discharge on Hydrogenerator using Acoustic and Electrical Measurement Methods

Hiratani Ryuichi, Maeda Ikuya, Kaneko Tadamitsu, Tsuji Toshinori, Takenouchi Osamu, Otsubo Masahisa, Honda Chikahisa, Sakoda Tatsuya, Fukumoto Susumu, Tokumitsu Akihiro, Kai Tosiyasu, Andou Mitoshi

Memoirs of the Faculty of Engineering, Miyazaki University 37 163 - 168 2008.8

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Miyazaki University

Visualization of sound field with uniform phase distribution using laser beam microphone coupled with computerized tomography method

Tatsuya Sakoda and Yoshito Sonoda

Acoustical Science and Technology 29 ( 4 ) 295 - 299 2008.7

Language：Japanese Publishing type：Research paper (scientific journal)

DOI： 10.1250/ast.29.295

The hydrophobicity disappearance characteristic of the silicone rubber surface in Dynamic Drop Test

Optimization of Convex Electrode Geometry for Surface Discharge used for Fabrication of the Electrode Groove on Solar Cells Reviewed

T. Hamada, T. Sakoda, M. Otsubo, K. Matsui and K. Nagasawa

Surface & Coating Technology 202 5405 - 5409 2008.6

Language：English Publishing type：Research paper (scientific journal)

SHIBARA Daiki, HAJI Kenichi, YAMASHITA Youhei, MIYAKE Takuma, SAKOTA Tatsuya, OTSUBO Masahisa

2008 ( 1 ) 29 - 34 2008.1

Language：Japanese Publishing type：Research paper (scientific journal)

Detection of Insulator Electric Discharge Sound from Counts and Cyclic Noise

NISHIDA Keisuke, SAKAMOTO Kouki, TSUJI Toshinori, SAKODA Tatsuya, OTSUBO Masahisa, HONDA Chikahisa

2008 ( 1 ) 41 - 44 2008.1

Language：Japanese Publishing type：Research paper (scientific journal)

Study on leakage current due to pollution deposit

YAMASHITA Youhei, HAZI Keniti, SHIIBARA Daiki, MIYAKE Takuma, SAKODA Tatuya, OTSUBO Masahisa

2008 ( 1 ) 23 - 27 2008.1

Language：Japanese Publishing type：Research paper (scientific journal)