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. 2015 Feb 27;6:6335. doi: 10.1038/ncomms7335

Figure 2. Square-wave gate voltage-induced PL recovery.

Figure 2

The device characterized in Fig. 1c–g is measured with P=1 μW. (a) PL spectra taken under square-wave voltage with Va=3.6 V and Vb=0.0 V at f=100 Hz (red), 10 kHz (green) and 1 MHz (blue). Inset is a schematic showing the definitions of Va and Vb. (b) PL spectra taken with d.c. voltages of Vg=0.0 V (black) and Vg=1.8 V (orange). (c–e) Integrated PL as a function of Va and Vb at (c) f=100 Hz, (d) 10 kHz and (e) 1 MHz. The PL integration window is from λem=1,275 to 1,325 nm.