| Autor: |
Bates, Clayton W., Zhang, Chichang |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; Oct2008, Vol. 104 Issue 7, p076101, 3p, 1 Diagram, 1 Graph |
| Abstrakt: |
Room temperature quantum efficiencies of 2 μm thick Ag/n-Si composite films as a function of electric field are calculated for incident radiation wavelengths of 3, 5, 8, and 14 μm using a previously derived formula. With energies smaller than the Ag–Si Schottky barrier height, the signal current is carried by electrons tunneling through the barrier. For composites with Ag particle size of 5 nm, in an applied electric field of 2×106 V/cm, the quantum efficiencies are between 10% and 35%, depending on the wavelength. They increase rapidly with electric field and asymptotically approach a large fraction of the absorbed incident radiation in the Ag particles. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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