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Humidity‐Induced Nanoscale Restructuring in PEDOT:PSS and Cellulose Nanofibrils Reinforced Biobased Organic Electronics
Author(s) -
Brett Calvin J.,
Forslund Ola K.,
Nocerino Elisabetta,
Kreuzer Lucas P.,
Widmann Tobias,
Porcar Lionel,
Yamada Norifumi L.,
Matsubara Nami,
Månsson Martin,
MüllerBuschbaum Peter,
Söderberg L. Daniel,
Roth Stephan V.
Publication year - 2021
Publication title -
advanced electronic materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.25
H-Index - 56
ISSN - 2199-160X
DOI - 10.1002/aelm.202100137
Subject(s) - materials science , pedot:pss , conductivity , organic electronics , nanocellulose , electronics , nanotechnology , organic solar cell , conductive polymer , nanostructure , polymer , relative humidity , flexible electronics , chemical engineering , composite material , cellulose , chemistry , physics , transistor , quantum mechanics , voltage , engineering , thermodynamics
In times where research focuses on the use of organic polymers as a base for complex organic electronic applications and improving device efficiencies, degradation is still less intensively addressed in fundamental studies. Hence, advanced neutron scattering methods are applied to investigate a model system for organic electronics composed of the widely used conductive polymer blend poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) together with nanocellulose as flexible reinforcing template material. In particular, the impact of relative humidity (RH) on the nanostructure evolution is studied in detail. The implications are discussed from a device performance point of view and the changing nanostructure is correlated with macroscale physical properties such as conductivity. The first humidification (95% RH) leads to an irreversible decrease of conductivity. After the first humidification cycle, however, the conductivity can be reversibly regained when returning to low humidity values (5% RH), which is important for device manufacturing. This finding can directly contribute to an improved usability of emerging organic electronics in daily live.