Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/124147
Title: DEVELOPMENT AND CHARACTERISATION OF ADVANCED SURFACE TEXTURES FOR ALUMINIUM-DOPED ZINC OXIDE (AZO) TRANSPARENT ELECTRODES FOR SUPERSTRATE THIN-FILM SOLAR CELLS
Authors: YAN XIA
Keywords: TCO, ZnO:Al, magneton sputtering, surface texturing, thin-film solar cells, optical trapping
Issue Date: 7-Jan-2016
Citation: YAN XIA (2016-01-07). DEVELOPMENT AND CHARACTERISATION OF ADVANCED SURFACE TEXTURES FOR ALUMINIUM-DOPED ZINC OXIDE (AZO) TRANSPARENT ELECTRODES FOR SUPERSTRATE THIN-FILM SOLAR CELLS. ScholarBank@NUS Repository.
Abstract: This thesis focuses on the deposition, characterisation and simulation of transparent conductive oxide (TCO) materials, especially aluminium-doped zinc oxide (AZO), for superstrate thin-film solar cells. The TCOs are deposited by magnetron sputtering onto planar glass sheets, followed by a wet-chemical texturing process to obtain optical scattering. For enhanced optical scattering, a two-step texturing procedure is developed for the AZO films. The effects of the front AZO texture are studied based on optical modelling and electrical simulations. Due to conformal growth of the silicon thin-film cell, the front AZO morphology is reproduced at the other interfaces of the device. The results show that the two-step texturing process provides the best harvest of the solar spectrum and thus boosts the efficiency of a-Si:H solar cells. To improve the electrical performance, a bilayer TCO structure is developed and analysed. The bilayer TCO shows improved electrical conductance and a wide process window for texturisation.
URI: http://scholarbank.nus.edu.sg/handle/10635/124147
Appears in Collections:Ph.D Theses (Open)

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