The photoelectric conversionefficiency of about About 2%,slightly lower than that of crystallization silicon solarcells,but the material has the advantages of simple manufacture,saving powerconsumption,the total production cost is low,so get a lot of development.Below is abrief introduction about solar energy battery production process as shown in Figure 2.The silicon raw material into melting pool within the melt casting,to be cooling afterthe formation of a stable state of mufti crystal column body,known as ingot.Then,broken spindles and solar battery slice processing.Figure 2b is the formation potentialof P-and n-type processing on the basic piece of cut.Also in cell sheet printed byobtaining current electrode and the formation of solar battery.Even monolithic solarcells can also produce electricity,but for the access to higher voltage,cells areconnected in series with the group will have to with in order to obtain higher strengthand weathering In the solar cell,the glass is installed at the periphery of the solarcell,the sealing material and the aluminum frame.Principle:first in the light of the premise of the night lighting,the Ba Kantian solarenergy battery pack as much as possible to save storage capacity to meet the needs ofthe night lighting,storage capacity is too small can not meet the needs of nightlighting,battery capacity is too large,on the one hand,the battery is always in astate of loss,and cause waste.5 lighting lamps(LED)at present most of the solarenergy use LED as a light source,LED long life,can reach 00000 h or more,workingvoltage Low,is very suitable for application in solar energy lamp.In particular,LEDtechnology has achieved a breakthrough in the key and its characteristics in the pastfive years have greatly improved the,price ratio is also greatly improved.In addition,led by a low voltage DC power supply,low cost of source control,brightness adjustment,frequent switch are possible and performance of the LED will not produce adverseeffects.To control the color,change of light distribution,dynamic mirage is possible,so it is especially suitable for application in solar lawn lamp.6 European countries such as Germany has already used solar energy,the United Stateshas begun to use.
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