Kyocera Corporation

Koji Niwa

Hironori Kii

Shiro Miyazaki

Tomofumi Honjo

Shigeo Aono

Yosuke Nishioka

A vegetable production method includes seeding, causing a cotyledon to sprout from a seed in a first period, growing a vegetable in a second period subsequent to the first period, further growing the vegetable in a third period subsequent to the second period, and harvesting the vegetable. The vegetable is grown with first light having a first maximum value of a light intensity in a wavelength range of 420 to 490 nm and including at least portion of light in a wavelength range of 500 to 600 nm in a later part of the second period, and is grown with second light having a second maximum value of a light intensity in a wavelength range of 590 to 650 nm, having a peak light intensity less than the second maximum value in a visible light wavelength range of less than or equal to 500 nm.

Vegetable production method

The method for producing a photoelectric converter of the present invention comprises a preparation step for preparing a substrate () formed from silicon; a first film-formation step for the formation of a first protective film () by deposition of aluminum oxide on a top surface (B) of the substrate () using the atom deposition method or chemical vapor deposition method in an atmosphere containing hydrogen; and a second film-formation step for forming a second protective film () by deposition of aluminum oxide on the first protective film () using sputtering after the first film-formation step. Moreover, the photoelectric converter of the present invention comprises a substrate formed from silicon; a first protective film formed from aluminum oxide; and a second protective film formed from aluminum oxide, wherein the concentration of hydrogen contained in the first protective film is higher than the concentration of hydrogen contained in the second protective film.

Growing community of inventors

Souraku-gun, Japan

Koji Niwa