Giant Photo‐Magneto‐Thermoelectric Effect of End‐On Oriented PEDOT Grown from Self‐Assembled 3D Tectons

Thuy

et al. 2022

Adv Funct Materials

Self Cite

Synergistically enhancing luminescent and ferroelectric (SELF) properties are observed from a tetraphenylethene (TP) substituted with clipping groups (C), where the C is consisting of a 4-[3,5-bis-(3-decyloxy-styryl)-styryl]-phenyl (DOS) unit. The DOS units of TPCn are self-assembled via intermolecular interaction to clip themselves and induce TP aggregation, as evidenced by clip-induced quenching of emission at DOS units (E clip ) accompanied by aggregation-induced emission enhancement of TPs (E AIE ). TPC4 demonstrates strong photoluminescence in a dilute chloroform solution and large E AIE in aqueous (>50%) THF solution. TPCn demonstrates SELF properties in film state, with high quantum yields of photoluminescence (>80%) and ferroelectric switching. Due to the introduction of four clips, TPC4 has a higher remnant polarization (P r = 2.27 µC cm −2 ) at room temperature than TPC1. TPC4 is successfully employed in a light-emitting electrochemical cell to achieve over 1290 cd m −2 under pulsed current conditions. The TPC4 film on a flexible substrate produced a piezoelectric output voltage of up to 0.13 V and a current density of 1.14 nA cm −2 upon bending. These results indicate that the side chain clipping and TP aggregation resulted in unprecedented flexible SELF properties in a single compound, offering simultaneous enhancement of electroluminescence, mechanical sensitivity, and energy harvesting capacity.

Section: Methodsmentioning

confidence: 99%

“…materials. [8,9] In particular, luminescent materials with ferroelectric properties could be developed as a material showing synergistic enhancement of luminescence and ferroelectricity (SELF) for a future display that provides a means of exchanging visual information and stimuli in all spaces including people and objects with self-energy harvesting capacity.…”

mentioning

confidence: 99%

Synergistic Enhancement of Luminescent and Ferroelectric Properties through Multi‐Clipping of Tetraphenylethenes

Thuy

et al. 2022

Adv Funct Materials

Self Cite

Advanced Physics Research

“…In 2021, Kim et al reported similar phenomenon of the magneto-Seebeck effect in oriented PEDOT:TOS/graphene hybrid devices (Figure 15a,b). [99] Figure 15. a) Schematic drawing of the PEDOT:TOS-based photo-MTE device under a perpendicular magnetic field.…”

Section: Mte Devicesmentioning

confidence: 99%

Advances in Organic Thermoelectric Devices for Multiple Applications

Ma,

Di,

Zhu

2023

Organic thermoelectric (OTE) devices composed of π‐conjugated molecules are the basic building blocks for self‐powered integrated organic electronics. In addition to molecular design and doping strategies, the highly tunable energy conversion process in OTE devices has drawn significant research interest. Specifically, the diverse physical properties of organic semiconductors, novel device geometry design, and advanced fabrication techniques combined enable the OTE device to be a powerful multiscale platform from single‐molecular scale to thin films for modulating the TE performance, studying the fundamental charge transport mechanism, exploring novel energy conversion phenomenon, and realizing various functionalities. Here, the authors comprehensively review the recent experimental and theoretical advances in related topics of OTE devices, including multifunctional, external physical fields, and temperature modulated, as well as quantum OTE devices. The remaining issues and perspectives toward future OTE device research are also discussed at the end.

“…After connecting six strips in series, the output power can reach 0.157 μW at a ΔT of 51.6 K, indicating that the film made by PEDOT nanowire has the potential to be employed in wearable devices. Moreover, controlled template-free in-situ polymerization of PEDOT was also studied to enhance the TE performance of the textile sublayer [199] . A simple one-bath template-free solution method was reported to fabricate PEDOT with an σ value of up to 560 S cm -1 and an S 2 σ value of 0.9 μW m -1 K -2 at room temperature.…”

Section: Pedotmentioning

confidence: 99%

Advances in conducting polymer-based thermoelectric materials and devices

Cao¹,

Shi²,

Zou³

et al. 2021

Microstructures

Conducting polymer-based thermoelectric materials are considered the most promising candidates for applying to wearable thermoelectric devices because of their high electrical conductivities, flexibility, stability, and low-toxicity features. Therefore, a timely review is needed to comprehensively overview their most recent progress in the last few years, considering the rapid development of thermoelectric conducting polymers. In this work, we carefully summarize recent advances in thermoelectric conducting polymers from aspects of their mechanisms, synthesis, micro/nanostructures, mechanical/thermoelectric properties, and related functional devices. A few state-of-theart thermoelectric conducting polymers, including poly(3,4-ethylenedioxythiophene)poly(styrenesulfonate), poly(3-hexylthiophene), polyaniline, and polypyrrole, are highlighted in detail. In the end, we point out the challenges, controversies, and outlooks of conducting polymers for future thermoelectric applications.