AI Article Synopsis
- The study investigates how various carbon nanomaterials (like graphene quantum dots and carbon nanotubes) affect the thermoelectric properties of PEDOT: PSS-based hybrids.
- The research created composite films using different combinations of these carbon materials and found that GNS facilitated the best structural organization within the PEDOT: PSS matrix.
- The results showed that the best power factor was achieved with GNS at a specific concentration, while the performance of MWCNT in the composites was more variable, initially decreasing conductivity before eventually increasing at higher weights.
Article Abstract
The influence of multiple dimensional carbon nanomaterials, such as graphene quantum dots (GQD), multi-walled carbon nanotubes (MWCNT), and graphene sheets (GNS) of the thermoelectric properties in poly(3,4-ethylenedioxythiophene): poly (styrene sulfonate) (PEDOT: PSS)-based hybrids have been investigated. PEDOT: PSS matrix was successfully used to prepare PEDOT: PSS/GQDs (PGQD), PEDOT: PSS/MWCNT (PCNT) and PEDOT: PSS/GNS (PGNS) composite films. According to structural characteristics, strong-interactions existed between carbon materials and PEDOT: PSS, and PEDOT: PSS layers with organized and arranged morphology were easier templated by GNS than GQD or MWCNT. It was found that besides energy filtering effect, hole-phonon interaction occurred with further addition of GNS and GQDs in PGNS and PGQD composite films. The optimal power factor (PF) of approximately 580 and 103W mKat 363 K were acquired in PGNS composite films at 5 wt% GNS and PGQD films with 1 wt% GQD filling, respectively. Unlike PGNS and PGQD films, electrical conductivity of PCNT reduced upon the addition of MWCNT, while the Seebeck coefficient decreased firstly, and then increased and reached to the highest value at 10 wt% MWCNT. The optimal PF of 381.8W mKat 363 K was obtained with weight fraction of 0.1 wt% in PCNT films.
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| http://dx.doi.org/10.1088/1361-6528/ac17c3 | DOI Listing |
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