Fig. 2: Effect of PACz interface and device area under NIR illumination. | Nature Communications

Fig. 2: Effect of PACz interface and device area under NIR illumination.

From: Skin-conformal MHz-speed organic photodetectors for angle-free and long-range near-infrared communication

Fig. 2

Device performance is compared based on (a–d) PACz material variation and (e–h) active area scaling (based on 3-Br-4PACz) under 850 nm LED illumination. a J–V characteristics under 102 mW/cm2 light intensity, illuminance and in the dark. b Linear dynamic range (LDR) and dark current density (dashed line) at −0.25 V bias. c Normalized frequency response with different PACz interfacial layers. d Transient response measurement at 100 kHz light modulation. e Current-voltage (I–V characteristics under 102 mW/cm2 and in the dark for five different device areas (red: 4 mm2, orange: 1 mm2, green: 0.25 mm2, blue: 0.04 mm2, and purple: 0.01 mm2). f LDR measured at −0.25 V bias. g Normalized frequency response with varying device areas. h Transient response at 100 kHz with varying device areas.

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