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We present a new fine line metallization process, called laser transferred contacts (LTC), with finger width w <; 30 μm. This method uses a laser transfer of metals to contact the emitter directly through the anti-reflection coating without the need of high temperature steps. The laser transfer process is not limited to a special material; hence a variety of metals can be used for contact formation...
The formation of selective emitter with lower doped areas between the contact fingers and higher doped areas beneath the front side metallization increases the efficiency ?? of crystalline silicon solar cells. The efficiency increases as a result of higher open circuit voltage and enhanced short circuit current density. The ipe laser doping process offers an elegant and reliable approach for the local...
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