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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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Moser, Simon
Swiss Federal Laboratories for Materials Science and Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024Precise Alkali Supply during and after Growth for High‐Performance Low Bandgap (Ag,Cu)InSe<sub>2</sub> Solar Cellscitations
- 2024Achieving environmental stability in an atomically thin quantum spin Hall insulator via graphene intercalationcitations
- 2024Liâ€Doping and Agâ€Alloying Interplay Shows the Pathway for Kesterite Solar Cells with Efficiency Over 14%citations
- 2024Li-doping and Ag-alloying interplay shows the pathway for kesterite solar cells with efficiency over 14%citations
- 2024Li-doping and Ag-alloying interplay shows the pathway for kesterite solar cells with efficiency over 14%citations
- 2023Orbital-selective metal skin induced by alkali-metal-dosing Mott-insulating Ca2RuO4citations
- 2023Orbital-selective metal skin induced by alkali-metal-dosing Mott-insulating Ca2RuO4citations
- 2023Controlled li alloying by postsynthesis electrochemical treatment of Cu 2 ZnSn(S, Se) 4 absorbers for solar cellscitations
- 2023Silver-alloyed low-bandgap CuInSe 2 solar cells for tandem applicationscitations
- 2023Silver‐Alloyed Low‐Bandgap CuInSe<sub>2</sub> Solar Cells for Tandem Applicationscitations
- 2020Transparent Nacre‐like Composites Toughened through Mineral Bridgescitations
- 2018Giant spin-splitting and gap renormalization driven by trions in single-layer WS2/h- BN heterostructurescitations
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article
Silver‐Alloyed Low‐Bandgap CuInSe<sub>2</sub> Solar Cells for Tandem Applications
Abstract
<jats:sec><jats:label /><jats:p>Photovoltaic conversion efficiency of CuInSe<jats:sub>2</jats:sub> solar cells is limited by low fill factor (<jats:italic>FF</jats:italic>) and open‐circuit‐voltage (<jats:italic>V</jats:italic> <jats:sub>OC</jats:sub>) values compared to Si or perovskite solar cells. Herein, small quantities of Ag to alloy CuInSe<jats:sub>2</jats:sub> to improve its properties are used, such as enhanced grain growth, higher crystal quality, and less detrimental defects, to overcome the device limitations of low‐bandgap CuInSe<jats:sub>2</jats:sub> absorbers. The impact of Ag on the electronic properties of the bulk material and the buffer–absorber interface is examined at different stoichiometric compositions. Ag alloying improves the morphology with larger grain sizes, extends carrier lifetimes, and elevates net doping densities. Ag alloying reduces Cu‐depleted ordered‐vacancy compounds at the buffer–absorber interface and causes a chalcopyrite phase of high‐crystal‐quality independent of the I/III ratio. It is suggested Ag affects the formation of the alkali‐rich surface layer (Rb–In–Se). The best solar cell with an Ag‐alloyed CuInSe<jats:sub>2</jats:sub> absorber achieves a <jats:italic>V</jats:italic> <jats:sub>OC</jats:sub> over 600 mV and <jats:italic>FF</jats:italic> values of about 74%, which result in a power conversion efficiency of 18.7% for low‐bandgap energy of 1.0 eV with short‐circuit current above 42 mA cm<jats:sup>−2</jats:sup>. The advantage of Ag alloying on the device performance of CuInSe<jats:sub>2</jats:sub> solar cells will impact future applications in tandem devices.</jats:p></jats:sec>