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One‐step Synthesis and Enhanced Thermoelectric Properties of Polymer–Quantum Dot Composite Films
Author(s) -
Shi Wei,
Qu Sanyin,
Chen Hongyi,
Chen Yanling,
Yao Qin,
Chen Lidong
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201802681
Subject(s) - materials science , pedot:pss , composite number , quantum dot , thermoelectric effect , polymer , conductive polymer , chemical engineering , tellurium , doping , nanotechnology , polymer chemistry , composite material , optoelectronics , metallurgy , physics , engineering , thermodynamics
Abstract Conventional syntheses of polymer–inorganic composite thermoelectric materials suffer major problems such as inhomogeneity, large particle size, and oxidation that result in ineffective loading. Now a one‐step synthesis can be used to fabricate high‐quality small‐sized anions codoped poly(3,4‐ethylenedioxythiophene):dodecylbenzenesulfonate/Cl‐tellurium (PEDOT:DBSA/Cl‐Te) composite films using a series of novel Te IV ‐based oxidants. The synchronized production of PEDOT and Te results in thick and homogeneous films containing evenly distributed and well‐protected Te quantum dots. Owing to the heavily doped crystalline polymer matrix as well as the <5 nm unoxidized Te quantum dot loading, at low Te concentrations as 2.1–5.8 wt %, the films exhibits high power factors of about 100 μW m −1 K −2 , which is 50 % higher compared to a pure PEDOT:DBSA film.