Silicon Solar Cell Electrode Paste For Back Side

Description

SN**8X Silicon Solar Cell Electrode Paste For Back Side LEED SN**8X is an environmental conductive paste designed on silicon solar cell(n+) positive electrode. The conductive component in silver paste will be the excellent ohmic conact characteristics with silicon chip penetrating SiNx film, and have good compatibilities with back aluminium paste when co-fired. It has the features of good printing, low contact resistance, good solderability and weldability . Data Sheet SN***3 SN***5 Solids Content *7~*0% *3~*7% Viscosityï&frac*4;ˆPa·Sï&frac*4;‰ï&frac*4;ˆBrookfield HBTï&frac*4;Œ*5°Cï&frac*4;Œ*0rpmï&frac*4;‰ **0±*0 Fineness ï&frac*4;œ*0Î&frac*4;m Screenï&frac*4;ˆBOPP stainless steelï&frac*4;‰ **0~**5mesh Drying infrared stoveï&frac*4;Œ**0~**0°C/3min Firing **0~**0°C/1~2seconds Dried Thickness *2±3Î&frac*4;m Fired Thickness *5±2Î&frac*4;m Resistivity (fired thickness) ≤5mΩ/â–¡ ≤4mΩ/â–¡ ï&frac*4;ˆ**0°Cï&frac*4;Œ*2Sn/*6Pb/2Agï&frac*4;‰solderability >*5% ï&frac*4;ˆ**0°Cï&frac*4;Œ*2Sn/*6Pb/2Agï&frac*4;‰weldability *0Seconds >*5Seconds Photoelectricity Conversion Efficiency Single crystal silicon, average conversion efficiency≥*7.3 Polysilicon, average conversion efficiency ≥*6.3 thinner LEED XS**9 Recommended Technical Information & Notice Printing:It is recommended the lustration grade of appliance and circumstance to be more than tem thousand degree, it should be guarantee that the room temperature and appliance temperaute remains *4±2°C during printing. Keep stir it slowly and fully before using. If take out of from icebox or icehouse firstly, please place it in the printing house until it return to room temperature. Drying:It can be dried both in infrared stove and rotary dry furnace, the peak temperature of drying is **0ï&frac*2;ž**0 degree centigrade, the drying time can be regulated according drying situation. Firing:Firing is one of most imporant data for affecting the performance of ***** firing need to use flash firing technicsï&frac*4;Œthe peak temperature can be regulated according the quality of fired thickness. Thinning:The composition is optimized for screen printing and thinning is not normally required.Use the LEED recommended thinner for laigh adjustments to viscosity of to replace evaporation losses. The use of too much thinner or the use of a non recommended thinner may affect the rheological behavior of the material and its printing chracteristics, and stir fully after thinning. Compatibility: It is therefore essential that customers thoroughly evaluate the material in their specific siuations in order to completely satisfy themselves with the overall quality and suitability of the composition for its intended applications. Transportation and Storage:During transportation and storage should protect against the tide and contamination. Containers may be stored in a clean, dry and stable environment at room temperature (between 5°Cï&frac*2;ž*0°C), with their lids tightly sealed.