Combining inorganic thermoelectric (TE) materials with conductive polymers is one promising strategy to develop flexible thermoelectric (FTE) films and devices. As most inorganic materials tried up until now in FTE composites are composed of scarce or toxic elements, and -type FTE materials are particularly desired, we combined the abundant, inexpensive, nontoxic Zn-doped chalcopyrite (CuZnFeS, = 0.01, 0.02, 0.03) with a flexible electrical network constituted by poly(3,4-ethylenedioxythiophene) polystyrenesulfonate (PEDOT:PSS) and graphene for -type FTE films. Hybrid films from the custom design of binary CuZnFeS/PEDOT:PSS to the optimum design of ternary CuZnFeS/PEDOT:PSS/graphene are characterized. Compared with the binary film, a 4-fold enhancement in electrical conductivity was observed in the ternary film, leading to a maximum power factor of ∼ 23.7 μW m K. The optimum ternary film could preserve >80% of the electrical conductivity after 2000 bending cycles, exhibiting an exceptional flexibility due to the network constructed by PEDOT:PSS and graphene. A five-leg thermoelectric prototype made of optimum films generated a voltage of 4.8 mV with a Δ of 13 °C. Such an evolution of an inexpensive chalcopyrite-based hybrid film with outstanding flexibility exhibits the potential for cost-sensitive FTE applications.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsami.1c15232 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Hybrid spin coating and evaporation techniques for fabricating double-layer stacked dual-color perovskite LEDs.
Sci Rep
January 2025
Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei, 10608, Taiwan.
This work reports on the preparation process of a double-layer perovskite active layer. The first active layer film, CsKPEAPbIBr, was fabricated using a spin-coating method, while the second active layer, MAPbBr, was deposited using MAPbBr single crystals as the evaporation source. Additionally, doping the PEDOT: PSS hole transport layer with ETA and EDA can enhance the uniformity of the perovskite film and reduce voids, improving charge transport efficiency.
View Article and Find Full Text PDFReducing Disorder in PbTe Nanowires for Majorana Research.
Nano Lett
January 2025
State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China.
Material challenges are the key issue in Majorana research, where surface disorder constrains device performance. Here, we tackle this challenge by embedding PbTe nanowires within a lattice-constant-matched crystal. The wire edges are shaped by self-organized growth instead of lithography, resulting in nearly atomically flat facets along both cross-sectional and longitudinal directions.
View Article and Find Full Text PDFFabrication of Polyurethane-Polyacrylate Hybrid Latexes with High Organosilicon Content via Phase Inversion Emulsion Polymerization.
Molecules
December 2024
Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
Waterborne polyurethane, with a mechanical strength comparable to solvent-based types, is eco-friendly and safe, using water as a dispersion medium. Polyacrylate excels in film formation and weather resistance but suffers from "hot stickiness and cold brittleness". Merging polyurethane and polyacrylate creates advanced hybrids, while organosilicon enhances properties but is restricted due to hydrolytic crosslinking.
View Article and Find Full Text PDFBuried Interface Modulation Using Self-Assembled Monolayer and Ionic Liquid Hybrids for High-Performance Perovskite and Perovskite/CuInGaSe Tandem Photovoltaics.
Adv Mater
January 2025
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China.
Effective modifications for the buried interface between self-assembled monolayers (SAMs) and perovskites are vital for the development of efficient, stable inverted perovskite solar cells (PSCs) and their tandem photovoltaics. Herein, an ionic-liquid-SAM hybrid strategy is developed to synergistically optimize the uniformity of SAMs and the crystallization of perovskites above. Specifically, an ionic liquid of 1-butyl-3-methyl-1H-imidazol-3-iumbis((trifluoromethyl)sulfonyl)amide (BMIMTFSI) is incorporated into the SAM solution, enabling reduced surface roughness, improved wettability, and a more evenly distributed surface potential of the SAM film.
View Article and Find Full Text PDFEnhancement of polycaprolactone nanofiber film performance by hydrogen bonding interactions with chitosan for food packaging.
Int J Biol Macromol
January 2025
Department of Food Science and Technology, Sunchon National University, Suncheon, Jeonnam 57922, Republic of Korea; Bio-Healthcare Research and Analysis Center, Sunchon National University, Suncheon, Jeonnam 57922, Republic of Korea; Glocal University Project Team, Sunchon National University, 255 Jungangno, Suncheon 57922, Jeonnam, Republic of Korea. Electronic address:
Hybrid environmentally friendly nanocomposite films were synthesized via electrospinning using polycaprolactone (PCL) and chitosan (CH). The resulting nanofiber films displayed a homogeneous fibrous microstructure with average diameters between 250-270 nm. Molecular simulation experiments revealed a progressive increase in hydrogen bonding over time.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!