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Home List of Titles Comparative study of light absorption enhancement in ultrathin a-Si:H solar cells with conformal parabolaconical nanoarrays
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/378722
- Comparative study of light absorption enhancement in ultrathin a-Si:H solar cells with conformal parabolaconical nanoarrays
- Yan, W.; Gu, M.
- Light trapping design is of critical importance for ultrathin a-Si:H solar cells. Three modelling methods are adopted for the amorphous silicon layer. The best modelling method is identified to achieve high-quality simulation results. Then, parabolaconical nanoarrays are introduced into ultrathin a-Si:H solar cells to study the design principle of high light absorption. Because a trade-off factor is often involved in solar cell consideration, light absorption is investigated for ultrathin a-Si:H solar cells with four conformal nanostructures, where a parabolaconical Ag nanoarray and a parabolaconical Al:ZnO nanoarray are included, respectively. Meanwhile, two height/radius ratios of 1 and 3 are considered, respectively. As a result, three promising structures and their respective optimal parameters are obtained. When the height/radius ratio is 1, the optimal absorption enhancement is 53.9% for a-Si:H solar cells with conformal parabolaconical Ag nanoarrays at a radius of 120 nm. When the height/radius ratio becomes 3, the optimal absorption enhancement is increased to 61.9% at a radius of 50 nm. Under the ratio of 3, it is found that the light absorption enhancement is 65.0% for the solar cells with conformal Al:ZnO nanoarrays. These design principles can provide an effective guide for the research and development of low-cost ultrathin a-Si:H solar cells.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Science, Engineering and Technology. Centre for Micro-Photonics
- Journal of Optics (United Kingdom), Vol. 16, no. 4 (2014 (in press))
- Publication year
- 2014 (in press)
- Institute of Physics Publishing Ltd
- Publisher URL
- Copyright © 2014 IOP Publishing Ltd.
- Peer reviewed