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Hagiwara AIPS Library Page 24
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"Chronology_of_Silicon-based_Image_Sensor_development"- Y. D. Hagiwara.pdf
https://eds.ieee.org/images/files/newsletters/Newsletter_Jan23.pdf
is on
IEEE_EDS_Newsletter_January2023_Issue.pdf
https://eds.ieee.org/publications/eds-newsletter
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How_to_make_Multi_Junction_Solar_Cell_Yoshiaki_Hagiwara_91.pdf
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Hagiwara AIPS Library Page Twenty Four
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Please_support_me_to_make_the_PP-NP-P+_double_junction_solar_cell.pdf
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July 7-10, 2026, Takasaki, Japan
2026_07_01_ICCCAS2026.pdf
2026 15th International Conference on Communications, Circuits and Systems (ICCCAS2026)
ICCCAS2026
Dr. Yoshiaki Hagiwara is an invited speaker in ICCCAS2026
Abstract? The first silicon chip of a PP-NP-P+ double junction type solar cell
was fabricated for an AI self-energy robot vision application.
This PP-NP-P+ double junction photodiode is very attractive cost-wise.
We only need to add one high-energy ion implantation step to form the deep buried N type region and
another low-energy ion implantation step to form the surface P region.
The deep buried N type region is completely depleted,
to provide a free underground long channel for photo-electrons to be directed swiftly
to the small area N+P-P+ single junction outlet drain.
Subsequent steps are identical to the conventional single junction solar cell fabrication.
In external power-off mode, this AI self-energy robot vision chip,
with an image sensor array of N x M pinned-surface buried-channel
P+PNPP+ double junction type photodiodes can also function
as a solar cell energy source unit.
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Publication_List_by_Yoshiaki_Hagiwara.html
2026_03_23_The_Difference_between_Hagiwara_JPA2020_131313_Multi_junction_Solar_Cell_and_Conventional_Tandem_Solar_cell.pdf
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Mathematics_and_Physics_of_Semiconductor_Devices_by_Yoshiaki_Hagiwara_AIPS.pdf
Yoshiaki_Hagiwara_AIPS_Donation_Guide.pdf
Conribution_to_Global_High_Technology_Yoshiaki_Daimon_Hagiwara_AIPS.pdf
Conribution_to_Global_High_Technology_Yoshiaki_Daimon_Hagiwara_AIPS_1.pdf
Conribution_to_Global_High_Technology_Yoshiaki_Daimon_Hagiwara_AIPS_2.pdf
Publication_List_by_Yoshiaki_Hagiwara.html
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