Download file (6.01 MB)
Download as zip (5.76 MB)

Collection

Citation

Description:

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 to now in FTE composites are composed of scarce or toxic
elements, and furthermore, n-type FTE materials are particularly desired, we combined the
abundant and inexpensive, non-toxic Zn-doped chalcopyrite (Cu1-xZnxFeS2, x = 0.01, 0.02,
0.03) with a flexible electrical network constituted by poly(3,4-ethylenedioxythiophene)
polystyrene sulfonate (PEDOT:PSS) and graphene for n-type FTE films. The hybrid films from
the custom-design of binary Cu1-xZnxFeS2/PEDOT:PSS to optimum-design of ternary
Cu0.98Zn0.02FeS2/PEDOT:PSS/graphene are characterized. Compared with the binary film, a 4-
fold enhancement on electrical conductivity was observed in the ternary film, leading to a
maximum power factor of ~ 23.7 μW m-1K-2. The optimum ternary film could preserve > 80%
of the electrical conductivity after 2000 bending cycles, exhibiting an exceptional flexibility
owing 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 ΔT of 13℃. Such an
evolution of an inexpensive chalcopyrite-based hybrid film with outstanding flexibility exhibits
potential for cost sensitive FTE applications.

Rights:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

Keyword: thermoelectric

Date published: 2021-11-03

Publisher: American Chemical Society (ACS)

Journal:

• ACS Applied Materials & Interfaces (ISSN: 19448252) p. 51245-51254

Funding:

• Japan Science and Technology Agency JPMJMI19A1
• China Scholarship Council 201906310135

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1021/acsami.1c15232

Related item:

Other identifier(s):

Contact agent:

Updated at: 2024-08-01 08:30:13 +0900

Published on MDR: 2024-08-01 08:30:14 +0900