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Kawasaki Heavy Industries developed for the manufacture of thin film solar battery modeling of laser machines. Is characterized by processing speed increased to 10,000 to 20,000 mm / sec. 　　

Thin-film solar batteries are usually stacked on the surface of the glass substrate transparent electrode film, the semiconductor film (power level) and the metal film, in the cascading process of these films requires the implementation of the circuit shape molding machine (slot) processing. According to Kawasaki Heavy Industries introduced the characterization of the existing molding machine speed of 2000mm / s or so. However, if the solar battery to achieve low cost, molding machines need to have carved a higher speed. In addition, in order to improve power generation efficiency of solar batteries, the high quality of the scribed lines are also highly anticipated.

The development of the molding machine by the laser irradiation apparatus and handling parts. The processing speed increased to 10,000 to 20,000 mm / sec. In addition, in the past need to make the glass substrate in a stopped state before processing, and the glass substrate without stopping the laser irradiation device can be in the adoption, implementation carved processing. In other words, to be able to connect into the glass substrate. With these improvements, reducing the processing of each glass substrate and the processing time interval. In addition, the molding machine carved out of the groove width of the uniform, can form a smooth convex shape and a small burr, the region is expected to minimize the non-power generation and power generation efficiency to contribute. The molding machine of the external dimensions of 3500mm × 2300mm × 1500mm. Maximum size of the substrate can be processed 1400mm × 1100mm.

Kawasaki Heavy Industries also intends in future to the development of the molding machine and has been listed on the wafer high pressure jet cleaning machine combined to provide the entire system. In addition, the company will in December 5, 2011 - December 7 at Makuhari MESSE International Convention and Exhibition Center at the “PV JAPAN 2011″ on the display.

Mitsubishi Materials developed for thin-film silicon solar battery electrodes of Ag (Ag) nano-ink, IT O (indium tin oxide) SiO2 nano-ink and ink. The Mexican Department of the nanoparticles dispersed in ink made ​​of coated film silicon solar batteries in the Si layer, the electrode can be formed called the back of the sub-micron-thick film. The photoelectric conversion efficiency of the vacuum with the original film fairly.

Thin-film silicon solar batteries have advantages: the amount of silicon crystalline silicon can be reduced to 1 / 100, the energy pay period (the electricity to the power required to manufacture the product run time) is short, and compound semiconductor solar battery with susceptible than non-Te (tellurium) and other restrictions on the amount of raw materials. However, for solar battery manufacturers, the introduction of a variety of vacuum film-forming device of the high initial investment cost is a big problem, need to come into a coating film-forming process significantly reduce costs.

According to reports, the electrode ink can be used to create Dainippon Screen (DNS) of the coating device “Linearcoater” in the 1.4m × 1.1m on the stability of large glass film. This will help to reduce thin-film silicon solar battery manufacturing costs.

Mitsubishi Materials will be November 28, 2011 - December 2, held in Fukuoka City, the “21stInternationalPhotovoltaicScienceandEngineeringConference (PVSEC-21)” published on the results of this development. In addition, Dainippon Screen Manufacturing (DNS) will be November 28, 2011 - November 30 in Shanghai, China at the “PVChina2011″ ink coating on the introduction of this technology.