Silicon Solar Cell Electrode Paste For Back Side

an environmental conductive paste designed on silicon solar cell(n+) positive electrode.
LEED SN928X 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

SN9283
SN9285
Solids Content
77~80%
83~87%
Viscosity(Pa·S)(Brookfield HBT,25°C,10rpm)
100±20
Fineness
<10μm
Screen(BOPP stainless steel)
280~325mesh
Drying
infrared stove,250~300°C/3min
Firing
780~930°C/1~2seconds
Dried Thickness
22±3μm
Fired Thickness
15±2μm
Resistivity (fired thickness)
≤5mΩ/♦
≤4mΩ/♦
(220°C,62Sn/36Pb/2Ag)solderability
>95%
(220°C,62Sn/36Pb/2Ag)weldability
10Seconds
>15Seconds
Photoelectricity Conversion Efficiency
Single crystal silicon, average conversion efficiency≥17.3
Polysilicon, average conversion efficiency ≥16.3
thinner
LEED XS-09