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128results about How to "Reduce formation rate" patented technology

Local aluminium surface-back-field solar cell and preparation method of the same

The invention discloses a local aluminium surface-back-field solar cell. The local aluminium surface-back-field solar cell includes a crystalline silicon wafer, wherein the back surface of the crystalline silicon wafer is provided with a passivation layer and a back electrode; and the front surface of the crystalline silicon wafer is provided with an emitting electrode, an anti-reflection layer and a front electrode. The local aluminium surface-back-field solar cell is characterized in that a laser open hole or open groove is formed in the passivation layer on the back surface of the crystalline silicon wafer; the laser open hole or open groove is provided with a first layer of local back surface aluminium paste covering the laser open hole or open groove; the first layer of local back surface aluminium paste, the front electrode and the back electrode are formed together through sintering; and a second layer of back surface aluminium paste which processed through high temperature is arranged on the first layer of local back surface aluminium paste. The local aluminium surface-back-field solar cell can greatly reduce the voidage of the local aluminium surface-back-field cell through optimization of aluminium paste printing and the sintering technology so as to solve the problem that black points and black lines appear during the electroluminescent process and improve the photoelectric conversion efficiency of the cell. The invention also discloses a preparation method of the local aluminium surface-back-field solar cell.
Owner:JA SOLAR TECH YANGZHOU +1

Apparatus and related methods for weather modification by electrical processes in the atmosphere

InactiveCN102105047AIncreased precipitationIncrease cloud coverageWeather influencing devicesInstrumentsElectricityEngineering
The present invention provides an apparatus for weather modification. The apparatus comprises an emitter electrode (21), means for providing the emitter electrode (21) with an electric charge, electrically coupled to the emitter electrode (21), an insulating support for supporting the emitter electrode (21) at a predetermined height, and means for earthing the apparatus. The emitter electrode (21) comprises a Malter film. According to another aspect of the present invention an apparatus for weather modification is provided, which comprises a lighter-than-air craft suitable for carrying an emitter electrode (21), means for providing the emitter electrode (21) with an electric charge, electrically coupled to the emitter electrode (21), and means for earthing the apparatus. According to still a further aspect of the present invention, a method of increasing the amount of precipitation in a target region is provided. The method comprises the steps of providing an emitter electrode (21), analyzing the meteorological situation in and/or close to the target region, and providing the emitter electrode (21) with an electric charge in response to the meteorological analysis, thereby causing the emitter electrode (21) to ionize the vicinity of the emitter electrode.
Owner:METEO SYST INT
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