Please use this identifier to cite or link to this item:
|Title:||Investigation of the optical absorption of a-Si:H solar cells on micro- and nano-textured surfaces||Authors:||Sahraei, N.
Aluminium induced texturing (AIT)
Thin-film solar cells
|Issue Date:||2013||Citation:||Sahraei, N., Venkataraj, S., Aberle, A.G., Peters, I.M. (2013). Investigation of the optical absorption of a-Si:H solar cells on micro- and nano-textured surfaces. Energy Procedia 33 : 166-172. ScholarBank@NUS Repository. https://doi.org/10.1016/j.egypro.2013.05.054||Abstract:||Light trapping is essential for thin-film silicon solar cells due to their thin absorber layers. Textured surfaces are widely used to scatter light, thereby increasing the pathlength of light in these solar cells. In a-Si:H solar cells different interfaces can be textured, e.g. the glass/TCO (transparent conductive oxide) interface, the TCO/a-Si:H interface, or the rear TCO/Al (rear reflector) interface. Nano-textured TCOs are widely used for scattering light at the TCO/a-Si:H interface. Additionally, it was shown that micro-texturing of the glass/TCO interface is effective for light scattering, especially in the long-wavelength range. Aluminium induced texturing (AIT) is a method to texture glass surfaces. Previous studies have shown that AIT glass increases the quantum efficiency of micromorph thin-film solar cells in the long-wavelength range. In this contribution, the Advanced Semiconductor Analysis (ASA) software is used to investigate the effect of textured interfaces on the absorption enhancement of single- and double-junction a- Si:H thin-film solar cells. Surface morphologies of AIT glass (micro-textured) and a commercially available TCO-coated glass (whereby the TCO is nano-textured) are examined. The results suggest that nano-texturing increases the parasitic absorption in the TCO and the p-doped silicon layer, thus decreasing the blue response of the solar cell. However, absorption in the intrinsic layer is significantly enhanced in the long-wavelength region. Particularly in the double-junction a-Si:H solar cells on AIT micro-textured superstrates, the current is enhanced in both the top and the bottom cell. © 2013 Published by Elsevier Ltd. Selection.||Source Title:||Energy Procedia||URI:||http://scholarbank.nus.edu.sg/handle/10635/83864||ISSN:||18766102||DOI:||10.1016/j.egypro.2013.05.054|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Sep 24, 2020
WEB OF SCIENCETM
checked on Sep 17, 2020
checked on Sep 27, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.