2020
DOI: 10.1002/adma.202002752
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High Thermoelectric Performance in n‐Type Perylene Bisimide Induced by the Soret Effect

Abstract: Low‐cost, non‐toxic, abundant organic thermoelectric materials are currently under investigation for use as potential alternatives for the production of electricity from waste heat. While organic conductors reach electrical conductivities as high as their inorganic counterparts, they suffer from an overall low thermoelectric figure of merit (ZT) due to their small Seebeck coefficient. Moreover, the lack of efficient n‐type organic materials still represents a major challenge when trying to fabricate efficient … Show more

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Cited by 58 publications
(60 citation statements)
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“…The expected P max considering the experimentally measured Seebeck coefficient at thermoelement level ( S = +15.8 µV·K −1 ) for the SWCNT at 1.0 wt.%, shown in Figure 2 , would be 0.789 μW at ∆ T = 60 K, which was also the highest temperature gradient used in this study to characterize the performance of the TEG device. However, the P max of the device, considering the experimentally measured V out and the second part of Equation (3), was calculated to be 0.695 µW at ∆ T = 60 K. Moreover, it should be mentioned that in the present study, thermoelectrically generated electronic charge carriers were the ones to contribute to the thermoelectric measured effect, in contrast to plausible mixed thermoelectrically generated carriers, i.e., electronic and ionic charge carriers, as reported in other studies, which resulted also in significantly high experimentally measured Seebeck coefficient values [ 44 ].…”
Section: Resultssupporting
confidence: 69%
“…The expected P max considering the experimentally measured Seebeck coefficient at thermoelement level ( S = +15.8 µV·K −1 ) for the SWCNT at 1.0 wt.%, shown in Figure 2 , would be 0.789 μW at ∆ T = 60 K, which was also the highest temperature gradient used in this study to characterize the performance of the TEG device. However, the P max of the device, considering the experimentally measured V out and the second part of Equation (3), was calculated to be 0.695 µW at ∆ T = 60 K. Moreover, it should be mentioned that in the present study, thermoelectrically generated electronic charge carriers were the ones to contribute to the thermoelectric measured effect, in contrast to plausible mixed thermoelectrically generated carriers, i.e., electronic and ionic charge carriers, as reported in other studies, which resulted also in significantly high experimentally measured Seebeck coefficient values [ 44 ].…”
Section: Resultssupporting
confidence: 69%
“…Our group proposed a mixed organic ion‐electron n‐type conductor based on highly crystalline and reduced perylene bisimide ( Figure a). [ 21 ] Quasi‐frozen ionic carriers yielded a large ionic Seebeck coefficient of −3021 µV K –1 while electronic carriers dominated electrical conductivity, which was as high as 0.18 S cm –1 at 60% RH. The overall power factor was remarkably high (165 µW mK –2 ), with ZT = 0.23 at room temperature.…”
Section: Challengesmentioning
confidence: 99%
“…Reproduced with permission. [ 21 ] Copyright 2020, Wiley‐VCH GmbH. b) Conceptual drawing of TE devices having a wavelength‐selective emitter (SE) and a broadband emitter (BE) on the top.…”
Section: Challengesmentioning
confidence: 99%
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“…RH, as shown in Fig. 1d, which is significantly higher than some recently reported i-TE materials such as PEO-NaOH (0.014) 15 , PSSNa (0.013) 39 and PVDF-HFP/EMMI:TFSI (0.007) 8 and close to the tetrachloro-perylene bisimide (4Cl-PBI) (0.23) 40 , PVDF-HFP-EMIM:DCA (0.75) 7 . The original porous morphologies of T-PhNPs gradually became more dense structures and the pores were even fulfilled at higher concentrations of the TPFPB ( Supplementary Fig.…”
mentioning
confidence: 62%