Figure 2: Structure and performance of the CNT transmitter.
From: Carbon nanotube-based three-dimensional monolithic optoelectronic integrated system
(a) Schematic of the CNT transmitter consisting of a digital CNT n-FET (field effect transistor) and emitter. (b) False-colour SEM image of the real CNT transmitter (scale bar, 10 μm), consisting of an interdigital n-FET and emitter. (c) EL spectrum and Lorentzian fitting. (d) Integrated IR emission intensity as a function of voltage bias. (e) Corresponding EL and photoluminescence spectra. (f) Transfer characteristics of the CNT transmitter with a modest Vds=6 V. Inset is the corresponding equivalent circuit diagram. (g) Tunable and controllable IR emission of the transmitter. The two EL emission spectra correspond to Vgs=−2 and 5 V, respectively. (h) Time trace of the transmitter.
