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PREPARATION AND PROPERTIES OF HYDROGEN STORAGE MATERIAL TiFe WITH amorphous si COATING

Acta Metallurgica sinica(English Letters) 1992年第10期5卷 259-262页

作者： XU Wenyang LI Jinping DONG Jinxiang PAN Junde Taiyuan Polytechnical University,Taiyuan,China

An evident improvement on activation properties of hydrogen storage was made by sput- tering an amorphous coating of commercial si on TiFe *** observation revealed an obvious difference between the morphologies before and after hydrogen storage for TiFe alloy with or without amorphous si *** is believed that this may be quite a developable hydrogen storage material.

关键词： amorphous si hydrogern storage material coating TiFe

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Miniature amorphous silicon Solar Cells Activated by Laser for Power Sources of Micromachines

Miniature Amorphous Silicon Solar Cells Activated by Laser f...

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第十五届国际光伏科学与工程大会

作者： Takeshi Kitaura Yoichirou Suzuki Takashi Minemoto Hideyuki Takakura Yoshihiro Hamakawa College of Science and Engineering Ritsumeikan University 1-1-1 NojihigashiKusatsu Shiga 525-8577 Japan

Miniature integrated solar cells for power sources of micromachines, such as sensors and actuators were fabricated. For the power supply of autonomous operation, such as free-moving micro robotic systems and space-based systems, a self-contained on-board or remote power supply is desirable. The systems of power supply must consume as small an area as possible to minimize the overall size of the system and output high voltage. In this work, The miniature integrated solar cells based on amorphous si (a-si) with the area of 2.5 mm consisted of 2 unit cells series connected were fabricated using a photolithography technique. The current-voltage characteristic of the solar cell under He-Ne laser (λ=632.8 nm) with the power of 1.6-6.4 mW were measured. With the laser power 6.4 mW, the solar cell produced a highest output voltage of 1.88 V and the power of 0.74 mW. In contrast to the output power, a highest efficiency of 18%, which is more than twice greater than that operated under sunlight, was obtained with the laser power of 1.6 mW. These results showed the usefulness of miniature amorphous silicon solar cells activated by laser for power sources of micromachines.

关键词： Solar Cell amorphous si Micromachine He-Ne Laser

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