期刊
SOLAR ENERGY MATERIALS AND SOLAR CELLS
卷 95, 期 11, 页码 3069-3073出版社
ELSEVIER
DOI: 10.1016/j.solmat.2011.06.036
关键词
Self-sustained porous silicon; Optical properties; Tuning spectral response; Solar cell
We present results of numerical simulation of optimized porous silicon (PS) multilayers used as antireflection coatings. For the simulations we introduce a figure of merit, which has into account the transmittance of PS multilayers, the solar cell internal spectral response and the solar spectrum. Using a realistic range of porosities in the simulations (from 40% to 90%) we found an optimal three layers configuration, which transfers to the cell 95.7% of the whole usable power. This value represents the 99.8% of the maximum attainable using the complete porosity range (from 0% to 100%). We fabricate the optimal PS three layers, achieving power transference to the substrate of 95.2%. In addition, taking advantage of the PS fabrication characteristics, we transferred a PS multilayer with specific optical response onto a crystalline silicon solar cell. This allows obtaining a tunable spectral response of the solar cell demonstrating the feasibility of transfer the porous antireflection coating onto any optical device. (C) 2011 Elsevier B.V. All rights reserved.
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