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The surface passivation of rear aluminum-alloyed p+ emitters is highly beneficial to increase the efficiency of back-junction n-type silicon solar cells, thus however demanding the application of locally defined emitter contacts. The formation of the rear contact by full-area screen-printing and alloying of Al-pastes on the locally opened contact points in the passivation layers exhibits two main...
We present a comprehensive study on the rear contact formation of rear surface-passivated silicon solar cells by full-area screen printing and alloying of aluminum pastes on the locally opened passivation layer. We show that the point contact distance has a significant influence on the local alloying process for the contact formation resulting in different structural and electrical contact properties...
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