Fig. 4: Image sensing with the BP phototransistor array. | npj 2D Materials and Applications

Fig. 4: Image sensing with the BP phototransistor array.

From: Electrochemically exfoliated phosphorene nanosheet thin films for wafer-scale near-infrared phototransistor array

Fig. 4: Image sensing with the BP phototransistor array.

a Average photocurrents and b photoresponsivities of the 7 × 7 array of phototransistors at different gate voltages. Error bars represent the standard deviation from 17–19 measurements. c–e Photocurrent mapping of a BP phototransistor array under 1550 nm light illumination (P = 6.84 mW cm−2) at VG = 80 V, 0 V, −80 V. The drain voltage was fixed at VD = 1 V.

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