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. 2017 Mar 24;8:14757. doi: 10.1038/ncomms14757

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Copyright © 2017, The Author(s)

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(a) The noise current dependence with frequency at 0 V reveals a 1/f behaviour that approaches the shot-noise limit for frequencies greater than 1 kHz. (b) At 1 kHz frequency, the measured noise is dominated by its shot component, with an increasing contribution of G–R at higher dark currents. (c) Responsivity and noise equivalent power (NEP) at 1 V reverse bias and 275 K. A dynamic range of ∼60 dB is obtained. (d) Specific detectivity spectrum at the optimum operation conditions. Extended SWIR sensitivity with a detectivity of 4 × 10¹² Jones at the CQD exciton peak is obtained. Error bars correspond to the s.d. over 20 measurements.