Structure Evolution and Thermoelectric Properties of Carbonized Polydopamine Thin Films | Zendy

Haoqi Li | Zendy; Yaroslav V. Aulin | Zendy; Laszlo Frazer | Zendy; Eric Borguet | Zendy; Rohit R. Kakodkar | Zendy; Joseph P. Feser | Zendy; Yan Chen | Zendy; Ke An | Zendy; Dmitriy A. Dikin | Zendy; Fei Ren | Zendy

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Structure Evolution and Thermoelectric Properties of Carbonized Polydopamine Thin Films

Author(s) -

Haoqi Li,

Yaroslav V. Aulin,

Laszlo Frazer,

Eric Borguet,

Rohit R. Kakodkar,

Joseph P. Feser,

Yan Chen,

Ke An,

Dmitriy A. Dikin,

Fei Ren

Publication year - 2017

Publication title -

acs applied materials and interfaces

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.535

H-Index - 228

eISSN - 1944-8252

pISSN - 1944-8244

DOI - 10.1021/acsami.6b15601

Subject(s) - materials science , carbonization , thermoelectric effect , nanotechnology , thin film , thermoelectric materials , composite material , chemical engineering , thermal conductivity , scanning electron microscope , thermodynamics , physics , engineering

Carbonization of nature-inspired polydopamine can yield thin films with high electrical conductivity. Understanding of the structure of carbonized PDA (cPDA) is therefore highly desired. In this study, neutron diffraction, Raman spectroscopy, and other techniques indicate that cPDA samples are mainly amorphous with some short-range ordering and graphite-like structure that emerges with increasing heat treatment temperature. The electrical conductivity and the Seebeck coefficient show different trends with heat treatment temperature, while the thermal conductivity remains insensitive. The largest room-temperature ZT of 2 × 10 -4 was obtained on samples heat-treated at 800 °C, which is higher than that of reduced graphene oxide.

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