Tailoring the framework of organic small molecule semiconductors towards high-performance thermoelectric composites <i>via</i> conglutinated carbon nanotube webs

Yin, Xiaojun; Peng, Yuhao; Luo, Jiajia; Zhou, Xiaoyan; Gao, Chunmei; Wang, Lei; Yang, Chuluo

doi:10.1039/c8ta01284a

Cited by 51 publications

(55 citation statements)

References 84 publications

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“…Furthermore, a power factor (PF) with a maximum detected value of 284 μW m −1 K −2 was achieved via the trade-off between the Seebeck coefficient and electrical conductivity of the SWCNT/C 8 BTBT/TCNQ film with vapor-phase doped 40 nm-thick TCNQ. This PF value was one of the highest thermoelectric power factors among those previously described for organic small-molecule thermoelectric materials [100][101][102][103].…”

Section: Single-walled Carbon Nanotubes (Swcnts) Doped With Benzo Compoundsmentioning

confidence: 59%

Thermoelectric Energy Harvesters: A Review of Recent Developments in Materials and Devices for Different Potential Applications

et al. 2020

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The thermoelectric effect encompasses three different effects, i.e. Seebeck effect, Peltier effect, and Thomson effect, which are considered as thermally activated materials that alter directions in smart materials. It is currently considered one of the most challenging green energy harvesting mechanisms among researchers. The ability to utilize waste thermal energy that is generated by different applications promotes the use of thermoelectric harvesters across a wide range of applications. This review illustrates the different attempts to fabricate efficient, robust and sustainable thermoelectric harvesters, considering the material selection, characterization, device fabrication and potential applications. Thermoelectric harvesters with a wide range of output power generated reaching the milliwatt range have been considered in this work, with a special focus on the main advantages and disadvantages in these devices. Additionally, this review presents various studies reported in the literature on the design and fabrication of thermoelectric harvesters and highlights their potential applications. In order to increase the efficiency of equipment and processes, the generation of thermoelectricity via thermoelectric materials is achieved through the harvesting of residual energy. The review discusses the main challenges in the fabrication process associated with thermoelectric harvester implementation, as well as the considerable advantages of the proposed devices. The use of thermoelectric harvesters in a wide range of applications where waste thermal energy is used and the impact of the thermoelectric harvesters is also highlighted in this review.

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Section: Single-walled Carbon Nanotubes (Swcnts) Doped With Benzo Compoundsmentioning

confidence: 59%

Thermoelectric Energy Harvesters: A Review of Recent Developments in Materials and Devices for Different Potential Applications

et al. 2020

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“…The LUMOs of P(TBT-Pt) were largely localized in the diazosulfide moieties, resulting in segregated HOMO/LUMO distribution and an enhanced intramolecular charge transfer (ICT) state [41]. The electrochemical behaviors of the polymers were investigated by cyclic voltammetry (CV) in acetonitrile, and the energy levels were calculated according to the equation of E energy level = −[4.8 + ( E onset − E 1/2(Fc/Fc+) )] [42,43]. As Figure 1c demonstrated, the onset potentials of the oxidation process were 0.51 eV for P(TBT-Pt) and 0.47 for P(TBT), corresponding to the HOMO levels of −5.31 and −5.27 eV, respectively.…”

Section: Resultsmentioning

confidence: 99%

Boosting the Adhesivity of π-Conjugated Polymers by Embedding Platinum Acetylides towards High-Performance Thermoelectric Composites

et al. 2019

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Single-walled carbon nanotubes (SWCNTs) incorporated with π-conjugated polymers, have proven to be an effective approach in the production of advanced thermoelectric composites. However, the studied polymers are mainly limited to scanty conventional conductive polymers, and their performances still remain to be improved. Herein, a new planar moiety of platinum acetylide in the π-conjugated system is introduced to enhance the intermolecular interaction with the SWCNTs via π–π and d–π interactions, which is crucial in regulating the thermoelectric performances of SWCNT-based composites. As expected, SWCNT composites based on the platinum acetylides embedded polymers displayed a higher power factor (130.7 ± 3.8 μW·m−1·K−2) at ambient temperature than those without platinum acetylides (59.5 ± 0.7 μW·m−1·K−2) under the same conditions. Moreover, the strong interactions between the platinum acetylide-based polymers and the SWCNTs are confirmed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) measurements.

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“…[134] Among them, the superior TE performance of SFX-2 (218.6 μW m −1 K −2 ) is primarily attributed to the expansion of conjugated systems and 3D architecture (Figure 10a). In 2017, Wang et al [135] developed four small organic molecules (including TDOPABP, TDOPAPy, TDPAPy, and TCzPy) with various conjugated-framework and the peripheral substituents, also discussing the TE capabilities of their doped films with SWCNTs. Consequently, the TCzPy/ SWCNT film exhibits higher σ of 198.4 S cm −1 with a maximum PF of 113.2 μW m −1 K −2 than the other three.…”

Section: The Advances Of P-type Small Molecule Ote Materialsmentioning

confidence: 99%

Recent Advances and Prospects of Small Molecular Organic Thermoelectric Materials

Zhou

Zhang

Zheng

et al. 2022

Small

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Thermoelectric (TE) materials possess unique energy conversion capabilities between heat and electrical energy. Small organic semiconductors have aroused widespread attention for the fabrication of TE devices due to their advantages of low toxicity, large area, light weight, and easy fabrication. However, the low TE properties hinder their large‐scale commercial application. Herein, the basic knowledge about TE materials, including parameters affecting the TE performance and the remaining challenges of the organic thermoelectric (OTE) materials, are initially summarized in detail. Second, the optimization strategies of power factor, including the selection and design of dopants and structural modification of the dope‐host are introduced. Third, some achievements of p‐ and n‐type small molecular OTE materials are highlighted to briefly provide their future developing trend; finally, insights on the future development of OTE materials are also provided in this study.

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Tailoring the framework of organic small molecule semiconductors towards high-performance thermoelectric composites via conglutinated carbon nanotube webs

Abstract: Regulating the structure of p-type organic small molecules to generate thermoelectric composites for achieving a high power factor of 113.2 μW m−1 K−2.

Cited by 51 publications

References 84 publications

Thermoelectric Energy Harvesters: A Review of Recent Developments in Materials and Devices for Different Potential Applications

Thermoelectric Energy Harvesters: A Review of Recent Developments in Materials and Devices for Different Potential Applications

Boosting the Adhesivity of π-Conjugated Polymers by Embedding Platinum Acetylides towards High-Performance Thermoelectric Composites

Recent Advances and Prospects of Small Molecular Organic Thermoelectric Materials

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