Figure 4From: The n-type Ge photodetectors with gold nanoparticles deposited to enhance the responsivityThe dark currents and photocurrents of (a) control, (b) 10.5% AuNPs, and (c) 30.3% AuNPs samples. The 1,310-nm responsivities at -2 V of the control, 10.5% AuNPs, and 30.3% AuNPs samples are 465, 556, and 623 mA/W, respectively.Back to article page