CIS-type thin film solar battery module and process for producing the same

Abstract

The invention providese a CIS-type thin film solar battery device and manufacturing method thereof. A float blue plate glass substrate in its Sn-free air face is identified rapidly and accurately, and the air face is arranged so as to face upward. A CIS-type thin film solar battery device is formed on the air face to improve the conversion efficiency and yield and to reduce the production cost. The surface of the glass substrate is exposed to ultraviolet light. When light is emitted, this face is identified (P1) as an Sn-containing float face (B) to put a mark (P2) indicating the presence of Sn on the float face. When an air face (A) having no mark indicating the presence of Sn faces upward, the substrate is passed in this state through washing and drying steps followed by the formation of a CIS-type thin film solar battery device on the air face (A). On the other hand, when the float face (B) faces upward, the substrate is turned upside down (P3) and is passed through washing and drying steps (P4), followed by the formation of a CIS-type thin film solar battery device (P5) on the air face (A) which faces upward.

Description

technical field [0001] The present invention relates to a structure of a CIS-based thin-film solar cell assembly and a manufacturing method thereof, in particular to a structure of a CIS-based thin-film solar cell assembly in which a solar cell device film is formed on the air side of a float glass substrate that does not contain Sn and methods of manufacture thereof. Background technique [0002] In the CIS thin-film solar cell module, due to the large area and the relationship of manufacturing cost, the CIS thin-film solar cell device is formed on the float blue glass substrate manufactured by the float method. Such as Image 6 As shown, the above-mentioned float blue glass substrate is manufactured by floating molten glass on molten tin and making it a predetermined thickness. Therefore, the float blue glass has a floating surface of the glass substrate. Contains Sn and does not contain Sn on the air side. In addition, it is considered that there is no significant diffe...

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Problems solved by technology

In addition, the glass surface may be reversed due to subsequent handling or storage, so the floating surface and the air surface cannot be clearly identified in the above identification process.

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