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Please use this identifier to cite or link to this item: http://apo.ansto.gov.au/dspace/handle/10238/7051

Title: Examining the role of ultra-thin atomic layer deposited metal oxide barrier layers on CdTe/ITO interface stability during the fabrication of solution processed nanocrystalline solar cells
Authors: Chambers, BA
MacDonald, BI
Ionescu, M
Deslandes, A
Quinton, JS
Jasieniak, JJ
Keywords: SOLUTIONS
SOLAR CELLS
BACKSCATTERING
CHEMICAL COMPOSITION
ZIRCONIUM
TITANATES
Issue Date: 1-Jun-2014
Publisher: Elsevier
Citation: Chambers, B. A., MacDonald, B. I., Ionescu, M., Deslandes, A., Quinton, J. S., Jasieniak, J. J., . . . Andersson, G. G. (2014). Examining the role of ultra-thin atomic layer deposited metal oxide barrier layers on CdTe/ITO interface stability during the fabrication of solution processed nanocrystalline solar cells. Solar Energy Materials and Solar Cells, 125(0), 164-169. doi: http://dx.doi.org/10.1016/j.solmat.2014.02.018
Abstract: Solution processed CdTe layers are a potentially low-cost alternative for use in thin-film solar cells. We have recently reported the use of such nanocrystalline layers within ITO/CdTe/ZnO/Al device architectures. One key concern with this type of device structure is the possibility of atomic scale interdiffusion between the ITO and CdTe layers, which can result in deleterious n-type doping of the CdTe layer. Rutherford Backscattering has been used to study the chemical composition across the ITO/CdTe interface as a function of thermal annealing temperature. Through these measurements we verify that interdiffusion is observed across the interface for annealing temperatures above 200 °C, and the extent of interdiffusion increases with temperature. Ultra-thin alumina, zirconia and titania layers deposited between the ITO and CdTe layers have been studied for their potential to act as a diffusion barrier. All investigated barriers successfully suppress interdiffusion. The outcomes of these compositional studies are directly compared to solar cells fabricated under analogous processing conditions, demonstrating improved cell performance. © 2014 Elsevier B.V.
URI: http://dx.doi.org/10.1016/j.solmat.2014.02.018
http://apo.ansto.gov.au/dspace/handle/10238/7051
ISSN: 0927-0248
Appears in Collections:Journal Articles

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