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This work reports on the integration process of rear point contact solar cells with reduced recombination and better light trapping than the conventional cells. Al2O3/SiNx passivation stacks were used to ensure the backside passivation and the effective lifetime of minority carrier is found to be >100 µs (estimated surface recombination velocity ∼50 cm/s) on solar p-type Cz wafers. The estimated...
It's difficult to measure junction depth because the junction is not in horizontal direction in textured silicon solar cells. In this paper a new, accurate junction depth measurement technique for textured silicon solar cells is investigated. Both experience and experimental data indicate that the measurement technique we used is feasible.
In this paper, the problem of strain was discussed, which comes from the process of eliminating the bow by cooling. During this process, the deformation was analyzed by measuring strains at different places of a solar cell. At last, some phenomena were got by comparing strain caused by cooling and heating respectively.
Cooling was a very effective way to eliminate the bow of Silicon solar cell. In this paper, by a series of experiments, we found that during the cooling, the electrical characteristics and internal or external quantum efficiency nearly stayed the same, and the lifetime of minority carriers as well. The cooling was a available way to apply in industrial process.
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