Abstract
High performance silicon combined structure (micropillar with Cu nanoparticles) solar cell has been synthesized from N-type silicon substrates based on the micropillar array. The combined structure solar cell exhibited higher short circuit current rather than the silicon miropillar solar cell, which the parameters of micropillar array are the same. Due to the Cu nanoparticles were decorated on the surface of silicon micropillar array, the photovoltaic properties of cells have been improved. In addition, the optimal efficiency of 11.5% was measured for the combined structure solar cell, which is better than the silicon micropillar cell.
Highlights
The radial p-n junction of silicon micropillar arrays (MPs) has been applied on the photovoltaic device, a new technology for reducing cost and improving the efficiency of silicon solar cells.[1,2,3,4,5,6] Based on the radial p-n junction of structure, the orthogonalization has been generated between the light absorption and the carrier transport direction.[7,8,9] Photons are absorbed along the axial direction of MPs as well as carriers are collected along the radial direction of the MPs
Despite higher power conversion efficiency (PCE) for MP-cells is achieved by light induce plating techniques, this technique throughout the experiment may lead to higher cost and more complex processes
Is there any possible to achieve NP-cells with higher PCE but at a lower cost and a simpler process? In order to answer the question, we introduce a new strategy of preparing hybrid MP-cells with a simple and low cost process
Summary
The radial p-n junction of silicon micropillar arrays (MPs) has been applied on the photovoltaic device, a new technology for reducing cost and improving the efficiency of silicon solar cells.[1,2,3,4,5,6] Based on the radial p-n junction of structure, the orthogonalization has been generated between the light absorption and the carrier transport direction.[7,8,9] Photons are absorbed along the axial direction of MPs as well as carriers are collected along the radial direction of the MPs. The optical and electrical measurements shown that the short circuit current density JSC of combined structure solar cell is higher than that of MP-cells.
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