Sharp Kabushiki Kaisha Corporation

Showa Aluminum Corporation

Toyo Aluminium Kabushiki Kaisha

Tomohiro Machida

Satoshi Tanaka

Masaomi Hioki

Takashi Tomita

Ryotatsu Otsuka

Takashi Watsuji

Kunio Kamimura

Tohru Nunoi

Tatsuo Saga

Yoshikazu Kawagoe

Junzou Wakuda

Jin Zhang

Keisuke Ohhira

Gao-Chao Lai

A fabrication method of a solar battery includes at least an aluminum electrode formation step of applying, drying and baking aluminum paste on at least a portion of the back side of a solar cell to form an aluminum electrode, and a cooling step of cooling the solar cell having an aluminum electrode formed at an atmosphere temperature of not more than 10&#xb0; C., after the aluminum electrode formation step. Accordingly, a solar battery having warping reduced without degrading the electric characteristics, reliability and appearance, and a fabrication method thereof are provided.

Solar battery and fabrication method thereof

A paste composition for forming an electrically conductive layer on a p-type silicon semiconductor substrate comprises aluminum powder, an organic vehicle and powder of at least one inorganic compound selected from a group consisting of an oxide-based inorganic compound and a non-oxide-based inorganic compound. The oxide-based inorganic compound has a thermal expansion coefficient smaller than the thermal expansion coefficient of aluminum and a melting temperature, a softening temperature and a decomposition temperature each higher than the melting point of aluminum. The non-oxide-based inorganic compound has a thermal expansion coefficient smaller than the thermal expansion coefficient of aluminum and at least one of a melting temperature, a softening temperature or a decomposition temperature higher than the melting point of aluminum. A solar cell comprises an electrically conductive layer formed by applying the paste composition having the aforementioned characteristics onto a p-type silicon semiconductor substrate and thereafter firing the paste composition.

Paste composition and solar cell employing the same

In a solar cell, at least one of reinforcing material and buffering material is provided at least partially on at least one of a back surface, a front surface and a side surface of the solar cell. With these reinforcing material and/or buffering material, occurrence of cell fracture due to load imposed by external force can be decreased.

Solar cell and method of producing the same

A metal purifying apparatus comprises a closed melting furnace equipped with a heater, molten metal holding crucible disposed within the furnace, a vertical hollow rotary shaft penetrating through a top wall of the furnace, a packing sealing off a clearance in the shaft penetrating portion of the top wall around the shaft, rotary drive means for rotatingly driving the shaft, a hollow rotary cooling body fixedly provided at a lower end of the shaft and having an interior space communicating with an interior space of the shaft, and a cooling fluid supply source for supplying a cooling fluid to the interior of the cooling body. The rotary shaft has disposed therein a cooling fluid discharge pipe with a lower end positioned below the top wall of the furnace. An outer periphery of the discahrge pipe and an inner periphery of the shaft are spaced apart from each other and define a space portion providing a cooling fluid supply channel for passing therethrough the cooling fluid to be supplied from the source to the interior space of the cooling body. The discharge pipe has an interior providing a cooling fluid discharge channel for discharging therethrough the cooling fluid supplied to the interior of the cooling body.

Apparatus for purifying metal

Growing community of inventors

Yao, Japan

Tomohiro Machida