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Author |
Neilson, K.M.; Hamtaei, S.; Nazif, K.N.; Carr, J.M.; Rahimisheikh, S.; Nitta, F.U.; Brammertz, G.; Blackburn, J.L.; Hadermann, J.; Saraswat, K.C.; Reid, O.G.; Vermang, B.; Daus, A.; Pop, E. |
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Title |
Toward mass production of transition metal dichalcogenide solar cells : scalable growth of photovoltaic-grade multilayer WSe₂ by tungsten selenization |
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A1 Journal article |
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Year  |
2024 |
Publication |
ACS nano |
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Volume |
18 |
Issue |
36 |
Pages |
24819-24828 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) |
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Abstract |
Semiconducting transition metal dichalcogenides (TMDs) are promising for high-specific-power photovoltaics due to their desirable band gaps, high absorption coefficients, and ideally dangling-bond-free surfaces. Despite their potential, the majority of TMD solar cells to date are fabricated in a nonscalable fashion, with exfoliated materials, due to the lack of high-quality, large-area, multilayer TMDs. Here, we present the scalable, thickness-tunable synthesis of multilayer WSe2 films by selenizing prepatterned tungsten with either solid-source selenium at 900 degrees C or H2Se precursors at 650 degrees C. Both methods yield photovoltaic-grade, wafer-scale WSe2 films with a layered van der Waals structure and superior characteristics, including charge carrier lifetimes up to 144 ns, over 14x higher than those of any other large-area TMD films previously demonstrated. Simulations show that such carrier lifetimes correspond to similar to 22% power conversion efficiency and similar to 64 W g(-1) specific power in a packaged solar cell, or similar to 3 W g(-1) in a fully packaged solar module. The results of this study could facilitate the mass production of high-efficiency multilayer WSe2 solar cells at low cost. |
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Wos |
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=brocade2&SrcAuth=WosAPI&KeyUT=WOS:001298 |
Publication Date |
2024-08-23 |
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ISSN |
1936-0851 |
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Additional Links |
UA library record; WoS full record |
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Impact Factor |
17.1 |
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Open Access |
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Notes |
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Approved |
Most recent IF: 17.1; 2024 IF: 13.942 |
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Call Number |
UA @ admin @ c:irua:208744 |
Serial |
9341 |
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