Degradable Photonic Synaptic Transistors Based on Natural Biomaterials and Carbon Nanotubes

Abstract

Characterizations and Measurements: For electrical measurement, Keithley 4200 semiconductor characterization system was used to measure the output curve, transfer curve, and other synaptic performances. UV-vis absorption spectrum of chlorophyll-a was carried out by UV-vis spectrometer (Agilent Cary 5000). The surface morphology of pure SWCNTs was observed by SEM. AFM was performed to present the distribution of these nanotubes as well.

A biopolymer-gated ionotronic junctionless oxide transistor array for spatiotemporal pain-perception emulation in nociceptor network

“…29,30 This is the phenomenon in which the peak EPSC activated by a second presynaptic spike is larger than that induced by the previous spike when a neuron is subjected to two stimulus events at a certain interval. [31][32][33] This behavior plays an essential role in recognizing and decoding temporal information in a neural nociceptor system. 34 Interestingly, such neural behavior can be successfully emulated using our artificial synaptic transistor.…”

Self‐Assembled Nanostructures of Quantum Dot/Conjugated Polymer Hybrids for Photonic Synaptic Transistors with Ultralow Energy Consumption and Zero‐Gate Bias

“…Major research interests in synaptic devices have focused on designing efficient materials with light‐harvesting capability, ranging from inorganic nanomaterials, organic–inorganic QDs, and organic chromophores to conjugated polymers and their hybrids. [ 40–45 ] In particular, perovskite‐based composites present the advantages of affordability, processability, and superior optoelectronic properties, including a high photoluminescence quantum yield, narrow‐band emission, high dielectric constants, and a tunable optical bandgap. [ 46–49 ]…”

High Performance Ternary Organic Phototransistors with Photoresponse up to 2600 nm at Room Temperature

“…These charge-pairs were quickly dissociated near the interface, and then the hole transferred from the charge transfer complex to SWCNTs films and formed enhanced photocurrent. [24,29,34,35] Meanwhile, electrons were trapped inside the complex, defects or D-A/SWCNTs interfaces, which led to ultrahigh photoresponsivity of the organic IR phototransistor. [4,12] In order to further understand this mechanism, two control devices were fabricated.…”

“…In addition, we demonstrated noise reduction function of our devices array which can realize the target signal processing function. [ 34 ] Even if the human eye receives a huge amount of information, the final feedback information usually focus on specific information. In our simulation, the light intensity was regarded as the importance of the signal.…”

“…[29,30] Semiconducting SWCNTs have high on/off ratio, low dark current, and wide gate regulation range, which makes semiconducting SWCNTs ideal materials to be incorporated with light absorbing layer for high performance phototransistors. [4,6,[31][32][33][34][35] The excellent gate voltage modulation function of SWCNTs can regulate the device channel to the depletion state, so that the phototransistor can operate at a very low dark current. [29,35] Therefore, the resulted photoresponsive device can detect the extremely weak light and obtain high photogain, without the need of deep cooling requirements owing to photogating effect, while for many IR PDs, deep cooling is indispensable.…”