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Functionalized engineered nanogap electrodes (pair of electrodes separated by a gap of a few nanometers) are utilized as tunneling chemoresistors for gas sensing and resistance switching at the molecular scale. The nanogap device consists of two gold electrodes vertically separated by a very thin spacer of 2 nm of α-Si and ∼4 nm of dielectric (SiO2 or Al2O3). A ∼10 nm wide sidewall air gap is formed...
The possibility of using polymer or organic films for photovoltaic or electret devices has been investigated by many investigators(1–5). In general, the open-circuit photovoltage in photovoltaic devices is much smaller than the potential difference across the energy gap of the materials if the mechanism responsible for the photovoltaic effects is due either to Schottky barrier, or to p-n junction...
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