Neuromorphic Functions in PEDOT:PSS Organic Electrochemical Transistors

Gkoupidenis, Paschalis; Schaefer, Nathan; Garlan, Benjamin; Malliaras, George G.

doi:10.1002/adma.201503674

Cited by 470 publications

(468 citation statements)

References 40 publications

(56 reference statements)

Supporting

Mentioning

447

Contrasting

Unclassified

Order By: Relevance

“…Previous papers on neuromorphic devices explored the role of electrolytes in connecting one1011, or multiple inputs to a single device124546. In this work, we use a common electrolyte to connect and control a whole array of devices.…”

Section: Discussionmentioning

confidence: 99%

“…A recent trend in neuromorphic engineering involves the use of devices based on organic electronic materials10111213141516. This is largely motivated by the attractive characteristics organic devices offer in interfacing electronics with biology17.…”

mentioning

confidence: 99%

“…This mechanism of operation facilitates the strong coupling between electronic and ionic charge carriers and enables efficient communication between electronics and biological systems. It has also been used to demonstrate a variety of neuromorphic functions including short-, long-term synaptic plasticity functions and orientation selectivity10111225.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Neuromorphic device architectures with global connectivity through electrolyte gating

2017

Self Cite

View full text Add to dashboard Cite

Information processing in the brain takes place in a network of neurons that are connected with each other by an immense number of synapses. At the same time, neurons are immersed in a common electrochemical environment, and global parameters such as concentrations of various hormones regulate the overall network function. This computational paradigm of global regulation, also known as homeoplasticity, has important implications in the overall behaviour of large neural ensembles and is barely addressed in neuromorphic device architectures. Here, we demonstrate the global control of an array of organic devices based on poly(3,4ethylenedioxythiophene):poly(styrene sulf) that are immersed in an electrolyte, a behaviour that resembles homeoplasticity phenomena of the neural environment. We use this effect to produce behaviour that is reminiscent of the coupling between local activity and global oscillations in the biological neural networks. We further show that the electrolyte establishes complex connections between individual devices, and leverage these connections to implement coincidence detection. These results demonstrate that electrolyte gating offers significant advantages for the realization of networks of neuromorphic devices of higher complexity and with minimal hardwired connectivity.

show abstract

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Neuromorphic device architectures with global connectivity through electrolyte gating

2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…The capability of PEDOT and other conducting polymers to facilitate ionic and electronic transport also finds applications in neuromorphic circuits and processing, i.e., artificial computing systems that mimic neurobiological architectures. Indeed, a PEDOT:PSS based organic electrochemical transistor that mimics some of the spatiotemporal processing capabilities of a neurobiological system has been successfully implemented [83]. …”

Section: Organic Semiconductors For Bioelectronic Applicationmentioning

confidence: 99%

Organic Bioelectronics: Materials and Biocompatibility

Feron

Lim

Sherwood

et al. 2018

IJMS

117

View full text Add to dashboard Cite

Organic electronic materials have been considered for a wide-range of technological applications. More recently these organic (semi)conductors (encompassing both conducting and semi-conducting organic electronic materials) have received increasing attention as materials for bioelectronic applications. Biological tissues typically comprise soft, elastic, carbon-based macromolecules and polymers, and communication in these biological systems is usually mediated via mixed electronic and ionic conduction. In contrast to hard inorganic semiconductors, whose primary charge carriers are electrons and holes, organic (semi)conductors uniquely match the mechanical and conduction properties of biotic tissue. Here, we review the biocompatibility of organic electronic materials and their implementation in bioelectronic applications.

show abstract

“…Various neuromorphic functions have been recently reported in OECTs, such as short-and long term plasticity and orientation selectivity. [22][23][24] Among the above mentioned neuromorphic functions, orientation selectivity is of particular interest, because it opens the door for novel, spatial concepts of information processing in organic bioelectronic devices. Orientation selectivity has been studied extensively in the past decades and is related to visual perception.…”

confidence: 99%

Orientation selectivity with organic photodetectors and an organic electrochemical transistor

et al. 2016

Self Cite

View full text Add to dashboard Cite

Neuroinspired device architectures offer the potential of higher order functionalities in information processing beyond their traditional microelectronic counterparts. Here we demonstrate a neuromorphic function of orientation selectivity, which is inspired from the visual system, with a combination of organic photodetectors and a multi-gated organic electrochemical transistor based on poly(3,4ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS). The device platform responds preferably to different orientations of light bars, a behaviour that resembles orientation selectivity of visual cortex cells. These results pave the way for organic-based neuromorphic devices with spatially correlated functionalities and potential applications in the area of organic bioelectronics.

show abstract

Neuromorphic Functions in PEDOT:PSS Organic Electrochemical Transistors

Abstract: PSS) organic electrochemical transistor device. These functions are a first step toward the realization of organic-based neuroinspired platforms with spatiotemporal information processing capabilities.

Cited by 470 publications

References 40 publications

Neuromorphic device architectures with global connectivity through electrolyte gating

Neuromorphic device architectures with global connectivity through electrolyte gating

Organic Bioelectronics: Materials and Biocompatibility

Orientation selectivity with organic photodetectors and an organic electrochemical transistor

Contact Info

Product

Resources

About