Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.egypro.2013.05.054
Title: Investigation of the optical absorption of a-Si:H solar cells on micro- and nano-textured surfaces
Authors: Sahraei, N.
Venkataraj, S.
Aberle, A.G. 
Peters, I.M.
Keywords: A-Si:H
Aluminium induced texturing (AIT)
Micro textures
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.

SCOPUSTM   
Citations

9
checked on May 27, 2018

WEB OF SCIENCETM
Citations

8
checked on Apr 10, 2018

Page view(s)

91
checked on May 25, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.