A Novel Method to Analyze the Relationship between Thermoelectric Coefficient and Energy Disorder of Any Density of States in an Organic Semiconductor

In this work, a unified method is proposed for analyzing the relationship between the Seebeck coefficient and the energy disorder of organic semiconductors at any multi-parameter density of states (DOS) to study carrier transport in disordered thermoelectric organic semiconductors and the physical m...

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Bibliographic Details
Published inMicromachines (Basel) Vol. 14; no. 8; p. 1509
Main Authors Qin, Dong, Chen, Jiezhi, Lu, Nianduan
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 27.07.2023
MDPI
Subjects
Analysis
Carrier transport
degree of disorder
Density of states
Energy
Entropy
Medical research
Medicine, Experimental
Methods
Organic semiconductors
Parameters
Seebeck coefficient
Seebeck effect
Semiconductors
Thermoelectricity
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Summary:In this work, a unified method is proposed for analyzing the relationship between the Seebeck coefficient and the energy disorder of organic semiconductors at any multi-parameter density of states (DOS) to study carrier transport in disordered thermoelectric organic semiconductors and the physical meaning of improved DOS parameters. By introducing the Gibbs entropy, a new multi-parameter DOS and traditional Gaussian DOS are used to verify this method, and the simulated result of this method can well fit the experiment data obtained on three organic devices. In particular, the impact of DOS parameters on the Gibbs entropy can also influence the impact of the energy disorder on the Seebeck coefficient.
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ISSN:2072-666X
2072-666X
DOI:10.3390/mi14081509