Design of smart home control system based on infrared and cloud platform

Non-fullerene-based organic photodetectors for infrared communication

“…The controller here uses the NEC transmission protocol consisting of the Pulse Distance Encoding (PDE) of the message bits where the logical "0" and "1" depends on the time between two pulse bursts. 38 The signal emitted from the remote control when the button "On" is engaged is depicted in Figure 3a. It contains different parts in the following order: a start pulse of 9 ms followed by a 4.5 ms space.…”

“…[35][36][37] Since the frequency range used for IR communication by a remote control is between 38 kHz and 50 kHz, the semiconductor with a carrier mobility superior of 10^-5 cm 2 V -1 s -1 will be necessary for fast extraction of the charges in order to follow the input signal with an attenuation of the response below 3 db. 38 To summarize, the ideal candidate for infrared communication is an ultra-low bandgap material with high mobility.…”