scholarly journals In situ control of synchronous germanide/silicide reactions with Ge/Si core/shell nanowires to monitor formation and strain evolution in abrupt 2.7 nm channel length

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Vol 110 (21) ◽  
pp. 213103
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Renjie Chen ◽  
Binh-Minh Nguyen ◽  
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2005 ◽  
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2013 ◽  
Vol 530 ◽  
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Author(s):  
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CrystEngComm ◽  
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Ali AlHassan ◽  
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2018 ◽  
Vol 147 ◽  
pp. 182-190 ◽  
Author(s):  
Lei Huang ◽  
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Nano Letters ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 7238-7246 ◽  
Author(s):  
Chao Zhang ◽  
Dmitry G. Kvashnin ◽  
Laure Bourgeois ◽  
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Konstantin Firestein ◽  
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Author(s):  
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<div>As a promising oxygen evolution reaction semiconductor, TiO2 has been extensively investigated for solar photoelectrochemical water splitting. Here, a highly efficient and stable strategy for rationally preparing GaON cocatalysts on TiO2 by atomic layer deposition is demonstrated, which we show significantly enhances the</div><div>photoelectrochemical performance compared to TiO2-based photoanodes. For TiO2@20 nm-GaON core-shell nanowires a photocurrent density up to 1.10 mA cm-2 (1.23 V vs RHE) under AM 1.5 G irradiation (100 mW cm-2) has been achieved, which is 14 times higher than that of TiO2 NWs. Furthermore, the oxygen vacancy formation on GaON as well as the band gap matching with TiO2 not only provides more active sites for water oxidation but also enhances light absorption to promote interfacial charge separation and migration. Density functional theory studies of model systems of GaON-modified TiO2 confirm the band gap reduction, high reducibility and ability to activate water. The highly efficient and stable systems of TiO2@GaON core-shell nanowires provide a deeper understanding and universal strategy for enhancing photoelectrochemical performance of photoanodes now available. </div>


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