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DOUBLE PEAKED OUTBURSTS OF THE BLAZAR OJ 287 IN 1994 - 1996
ARIMOTO JUN'ICHI,SADAKANE Kozo,HONDA SATOSHI,TANABE KAZUHITO The Korean Astronomical Society 1996 Journal of The Korean Astronomical Society Vol.29 No.suppl1
VRI bands CCD photometric observations of the BL Lac object OJ 287 have been carried out during the period from October, 1994 to May, 1996. OJ 287 underwent two major outbursts during our observations. The first peak (V14.0 mag.) occurred in the first half of November, 1994 and faded out to 16.5 mag within 150 days. The second peak (14.0 mag.) was observed in late December, 1995. The latter peak continued at nearly the same brightness until May, 1996. Such a long lasting outburst has never been reported for OJ 287. Color indices (V - R and V-I) remained nearly constant during the outbursts.
Processes for over 18.5% high-efficiency multi-crystalline silicon solar cell
Hiroaki Morikawa,Daisuke Niinobe,Kunihiko Nishimura,Shigeru Matsuno,Satoshi Arimoto 한국물리학회 2010 Current Applied Physics Vol.10 No.2
This paper reports the improvement of a high-efficiency mass-production process for large area multicrystalline silicon (mc-Si) solar cells. A new cell structure and optimization of fabrication process has achieved 18.6% efficiency with mc-Si wafer in practical size of 15 cm × 15 cm, independently confirmed by National Institute of Advanced Industrial Science and Technology (AIST). Main fabrication process of the development are as follows; (1) novel texturization method by combination of laser patterning and wet chemical etching, (2) optimization for screen printing metallization process of firing profile condition,front and back metal electrode material, (3) reduction shading losses of front grid electrode by using modified screen and front metal electrode.