Abstract
Problem statement: Unmatched combination of emitter and base contact resistance will influence the total performance of the solar cell. To optimize this combination, single crystalline silicon solar cell was analyzed using quasi-one-dimensional transport of electrons and holes in crystalline semiconductor, PC1D. Approach: Effects of the resistance of the emitter and base contact have been investigated with a view to find the best resistive combinations. A range of contact resistance of emitter and base were applied to PC1D software for evaluation. Results: The short circuit current Isc, the open circuit voltage Voc, the maximum power Pm and the fill factor are the observed parameters due to the variations of the resistance on the emitter and base contact. As the two variable factors that take into the account, while evaluating one factor, the other was set to constant value. It is found that as the contact resistance goes higher, the values of the parameters deceased. Conclusion/Recommendations: From the evaluation, the lowest emitter resistance that will give highest value of parameter in the selected ranged is 1 m while for the base contact will be 15 m. The overall investigation on single crystalline silicon solar cell base and emitter contact were done, gives potential parametric suggestion that may assist in the fabrication of high efficiency single crystalline silicon solar cells. A different range of resistance variation are suggested for future related investigation.
Highlights
There are many aspects to be look on in order to produce a high efficiency energy conversion solar cell, mostly the single crystalline silicon solar cells
The energy conversion efficiency of a solar cell can be significantly increased with the improvement of material properties and the design of structures of the cells (Kabir et al, 2010)
Two scales were taken to account; the large scale is to determine the resistance with the best result, while the small scale was to study the effect of the resistance towards the parameters
Summary
There are many aspects to be look on in order to produce a high efficiency energy conversion solar cell, mostly the single crystalline silicon solar cells. The energy conversion efficiency of a solar cell can be significantly increased with the improvement of material properties and the design of structures of the cells (Kabir et al, 2010). One of the factors that required increasing the efficiency of a solar cell is by optimising its emitter and base contacts. The silicon solar cell contacts nowadays are commonly realized by screen printing method. In industrial production the most commonly applied technique for the front side metallization of silicon solar cells is screen printing, a reliable and well-understood process with high throughput rates (Erath et al, 2010). Metal pastes that usually used for the contacts is aluminium for the back contact and silver for the front contact
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