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Electricity Generation from Atmospheric Moisture Using a CdS/p‐Si Nanowire Hetero‐Junction Device

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We report the fabrication of a CdS/p-Si nanowire hetero-junction by a cost-effective, facile chemical bath deposition (CBD) technique and their consequent application for electricity generation from atmospheric moisture. An optimum output voltage in the range of ∼250–300 mV and a maximum current of 0.2 μA was observed for a single primitive device.


Abstract

One-dimensional heterojunction devices are gaining attention because of improved carrier collection which results in improving the overall efficiency of a device. Herein, we report the synthesis of a CdS/p-Si nanowire (NW) hetero-junction device by wet-chemical methods and their potential application for electricity generation from atmospheric moisture. A single CdS/p-Si NWs hetero-junction based moisture enabled electricity generator (MEG) device exhibits a saturated maximum output voltage in the range of 250–300 mV and a saturation current of ∼0.2 μA in presence of humid conditions. This primitive module acts as a promising candidate for future energy generation devices constituting of individual units connected either through simple series or parallel connection to scale up high electrical power.

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