Visible light-induced enhancement in the Seebeck coefficient of PEDOT:PSS composites with two-dimensional potassium poly-(heptazine imide)

Abstract

Thermoelectric (TE) materials are significant for sustainable development because they can used to directly harvest heat into electricity. Although it is well known that light exposure can affect the electrical...

p–n hybrid bulk heterojunction enables enhanced photothermoelectric performance with UV-Vis-NIR light

“…3D), which is inconsistent with previous reports. 46 This may be due to the strong absorption of PEDOT:PSS under near-infrared light, which leads to an induced voltage generated under illumination.…”

Dual-action carbon quantum dots with light assist in enhancing the thermoelectric performance of polymers

“…The PEDOT:PSS film obtained higher induced voltage under illumination, which is inconsistent with previous reports. 29,53 On the one hand, it may be due to the strong absorption of near-infrared light by PEDOT:PSS, which leads to heating under illumination to generate voltage. On the other hand, the PEDOT:PSS film was prepared with EtOH as a diluent and a small amount of DMSO was added, resulting in a conformational change of PEDOT:PSS to improve conductivity.…”

“…26,27 Specifically, chemical doping can increase s but also can decrease S. In contrast, in light-induced doping, it was found that light can simultaneously increase the comprehensive TE performance parameters. 28,29 Light is often applied to increase electronic properties particularly the conductivity of semiconductors and the field of optoelectronics is a very interesting area. 30,31 Xu et al 32 found that light illumination can simultaneously increase S and s of MEH-PPV polymers.…”

Near-IR Light-Tunable Omnidirectional Broadband Terahertz Wave Antireflection Based on a PEDOT:PSS/Graphene Hybrid Coating

“…The monolayer nature of graphene and its high quality were determined by Raman spectroscopy with a 532 nm laser excitation, , exhibiting the characteristic “G” mode with a strong “2D” signature as seen in Figure c. Moreover, the absorption spectrum of a PEDOT:PSS film fabricated on a quartz substrate is shown in Figure d, suggesting its high transparency to the NIR light . Since the overall thickness of the PEDOT:PSS/graphene composite film is far less than the wavelength and the skin depth of incident THz waves, the composite film can be considered as an approximate monolayer conductive film for the analysis of THz-wave propagation. , …”

“…Moreover, the absorption spectrum of a PEDOT:PSS film fabricated on a quartz substrate is shown in Figure 1d, suggesting its high transparency to the NIR light. 40 Since the overall thickness of the PEDOT:PSS/graphene composite film is far less than the wavelength and the skin depth of incident THz waves, the composite film can be considered as an approximate monolayer conductive film for the analysis of THz-wave propagation. 14,41 To observe the actively omnidirectional broadband THz AR behavior, the prepared PPGS and the uncoated Si substrate as a reference were measured using terahertz time-domain spectroscopy (THz-TDS, frequency range: 0.1−3.0 THz), and the THz transmission and reflection measurements were performed for incidence angles ranging from 0 to 70°( different angles: 0, 35, 45, 60, 70°), as schematically shown in Figures 2 and S1.…”