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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Bae, Dowon
Loughborough University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2022Two-dimensional metal carbides for electro- and photocatalytic CO2 reduction: Reviewcitations
- 2020A Comparative Study of (Cd,Zn)S Buffer Layers for Cu(In,Ga)Se2 Solar Panels Fabricated by Chemical Bath and Surface Deposition Methodscitations
- 2015Crystalline TiO 2 : A Generic and Effective Electron-Conducting Protection Layer for Photoanodes and -cathodescitations
- 2015Crystalline TiO2: A Generic and Effective Electron-Conducting Protection Layer for Photoanodes and -cathodescitations
- 2014Iron-Treated NiO as a Highly Transparent p-Type Protection Layer for Efficient Si-Based Photoanodescitations
- 2013Investigation of Al2O3 diffusion barrier layer fabricated by atomic layer deposition for flexible Cu(In,Ga)Se2 solar cellscitations
- 2012Fabrication of Cu2ZnSnS4 thin film solar cell using single step electrodeposition methodcitations
Places of action
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article
Investigation of Al2O3 diffusion barrier layer fabricated by atomic layer deposition for flexible Cu(In,Ga)Se2 solar cells
Abstract
<p>The use of Al<sub>2</sub>O<sub>3</sub> fabricated by atomic layer deposition (ALD) as a metal diffusion barrier between the stainless steel substrate and the back contact layer in flexible Cu(In,Ga)Se<sub>2</sub> (CIGS) photovoltaic (PV) devices was found to reduce metal ion diffusion from the substrate and reduce the number of defects at the CIGS absorber layer, as determined from the secondary ion mass spectrometry (SIMS) depth profile and quantitative defect analysis using C-V measurements. Cells with Al<sub>2</sub>O<sub>3</sub> barrier layers were found to show higher efficiency and uniformity compared to cells with ZnO barrier layers. XRD pattern analysis showed the Al<sub>2</sub>O<sub>3</sub> barrier layer's amorphous characteristic which can form a complex diffusion path. In addition, quantum efficiency (QE) analysis of the cells showed that the main advantage of using an Al<sub>2</sub>O<sub>3</sub> barrier layer is derived from the increase in the current density due to the decrease in the number of recombination sites resulting from the decrease in the number of defects due to the amorphous nature of the layer. Therefore, cells with an Al<sub>2</sub>O<sub>3</sub> barrier layer fabricated by ALD showed better average conversion efficiency and uniformity (11.23 ± 1.86%) compared to cells with a ZnO barrier layer fabricated by sputtering. Ongoing advancements in ALD processes make the use of Al<sub>2</sub>O<sub>3</sub> barrier layers promising for obtaining large-scale flexible solar cells.</p>