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25 May 2009

Volume 94, Issue 21, Articles (21xxxx)

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Appl. Phys. Lett. 94, 213101 (2009); http://dx.doi.org/10.1063/1.3139865 (3 pages)

Chul-Ho Lee, Jinkyoung Yoo, Young Joon Hong, Jeonghui Cho, Yong-Jin Kim, Seong-Ran Jeon, Jong Hyeob Baek, and Gyu-Chul Yi
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Solid-state electric generator based on chemically induced internal electron emission in metal-semiconductor heterojunction nanostructures

E. G. Karpov and I. I. Nedrygailov

Appl. Phys. Lett. 94, 214101 (2009); http://dx.doi.org/10.1063/1.3147853 (3 pages) | Cited 9 times

Online Publication Date: 29 May 2009

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Internal electron emission induced by hydrogen oxidation to water on surface of Pd/n-SiC heterojunction nanostructures is observed and the possibility for a new type of chemoelectrical power generator is discussed. The noble metal nanolayer serves both as reaction catalyst and emitter of hot electrons traveling over Schottky barrier and toward semiconductor anode. In situ chemical process provides significantly higher output of hot electrons compared to devices with externally heated cathodes. Large fraction of the hot electrons is generated nonadiabatically to complement the usual thermal excitation, leading to very high total internal quantum efficiency of the device, reaching 0.20 for the nanostructure studied here.
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85.35.-p Nanoelectronic devices
84.70.+p High-current and high-voltage technology: power systems; power transmission lines and cables
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