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We report fabrication of silicon nanohole radial p-n junction solar cells (SCs) using thermal annealing of silver films with metal-catalyzed electroless etching (MCEE). A balanced approach between the cost and controllability of the nanostructure fabrication is used to manufacture the silicon SCs. Based on our experimental results, the size and distribution of the nanoholes can be controlled by varying...
We present our progress in attaining high efficiency nc-Si:H solar cells at high deposition rates with superior light soaking stability. We have focused our effort on three areas: (i) improving the spatial uniformity and homogeneous properties for nc-Si:H, such as crystallite grain size and volume fraction, (ii) optimizing nucleation and seed layer during the initial growth of the nc-Si:H film, and...
We fabricated five different types of a-SiGe:H and nc-Si:H based multi-junction solar cell structures using modified very high frequency (MVHF) technology. After optimization, all five structures reached similar initial cell performance, i.e. ~12% small active-area (0.25 cm2) efficiency and 10.6-10.8% large aperture-area (?? 400 cm2) efficiency after encapsulation. However, they showed quite different...
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