材料物理三班王瑞solarcell.pptx

1、,Topic: solar cell Materials Physics Class three Made by Wang Rui,contents,Edmund Becquerel,The development of solar cells,Photo Voltaic Effect,discover,sunlight,1839,v,Semiconductor materials,N Electronic,P Cavitation,1954,The first monocrystalline silicon solar cell in history was made in The Bell

2、 Labs, The conversion efficiency of solar cells is 6 percent.,115 years,The development of solar cells,1958,silicion solar cells was applied to space,1960s,the development of space solar cells has reached a relatively high level,1970s,solar cells went into our daily life,Too fast to catch?,The class

3、ification of solar cells,Classified by the grade of maturity of technique,Silicon solar cells,Thin film solar cells,New concept solar cells,Monocrystalline silicon solar cells,Polycrystalline silicon solar cells,Polycrystalline thin film solar cells,-Si,CIGS,CdTe.,The third generation cells,() :Mono

4、crystalline silicon solar cell,How does It been made,?,the manufacture of silicon ingots,Preparation of high-purity of molten silicon,Dipping seed crystal,Pulling the seed upward,1,2,3,step1,The process of manufacturing:,ThemeGallery is a Design Digital Content & Contents mall developed by Guild Des

5、ign Inc.,The process of manufacturing:,Step 2:the manufacture of silicon wafer,Slicing of the silicon ingot with a wire saw about 400km,the thickness is about 100 microns,Step 3 :phosphorous diffusion,The process of manufacturing:,Oven temperature :850,The diffusion of some elements could change the

6、 conduction characteristic of metal.,phosphorous diffusion as well as arsenic and antimony is in order to forming N-type semiconductor,Compared with phosphorous, boron, aluminum and gallium diffusion can forming P-type semiconductor,The process of manufacturing,Step 4 :plasma etching,Radio frequency

7、 edge attack,Step 5:applying the ant-reflective coating,Step 6:screen printing metallization Using silver and aluminum pastes,The process of manufacturing:,Standard:12-cells a string,The process of manufacturing:,Step 6: automatic cell test,Voltage setting :480mA Irradiation :1000W/,Automatic solar

8、cell tester,Step 7:serial cells string,The process of manufacturing:,Step 6:ultrasonnic string cleaning,Last step : assembling,The development of thin film solar cell is very fast ,the products are various , then, I will take the production line of An Well as a example to talk about it.,() :Thin-Fil

9、m Silicon Solar Cell,The manufacture process,Loading of substrate,Step 1:,glass,ceramic,Silicon with poor quality,The glasses are cheap and transparent ,but the deposition temperature cant be high.,Ceramic substrate is expensive. Deposition temperature could reach a high level.,Its easy to depositio

10、n high quality silicon thin film . its the best choose,Substrate cleaning,Step:2,The manufacture process,Step:3,Sputtering of front TCO,TCO,Laser scribing system,Step 4:,Laser scribeto isolate front TCO,The manufacture process,This operation can isolate the TCO into many parallel parts. It made its

11、possible to improve the IPCE by string cells.,Step 5:,PECVD cluster tool,The manufacture process,multi-chamber , multi-substrate , state-of-the art PECVD cluster tool,The second laser scribe line,Step 6:,Laser scribe to isolate silicon layer,The manufacture process,Step 7:,Sputtering of back contact

12、,Step 8:,Laser scribe to isolate back contact,back contact,P,N,The third laser scribe line,The first laser scribe line,P-N junction,TCO,glass,Step 9:,Pre-lamination cleaning,The manufacture process,The application of solar cell,The development direction of solar cells,Energy crisis is becoming the most serious problem we humans mast deal with in this century . The solar energy is most likely being the solution.,The cost is higher than the thin film,The tr