Sökning: onr:"swepub:oai:DiVA.org:liu-147779" >
High Seebeck Coeffi...
High Seebeck Coefficient in Mixtures of Conjugated Polymers
-
- Zuo, Guangzheng, 1985- (författare)
- Linköpings universitet,Komplexa material och system,Tekniska fakulteten
-
- Liu, Xianjie, Ph.D. 1971- (författare)
- Linköpings universitet,Ytors Fysik och Kemi,Tekniska fakulteten
-
- Fahlman, Mats, 1967- (författare)
- Linköpings universitet,Ytors Fysik och Kemi,Tekniska fakulteten
-
visa fler...
-
- Kemerink, Martijn, 1970- (författare)
- Linköpings universitet,Komplexa material och system,Tekniska fakulteten
-
visa färre...
-
(creator_code:org_t)
- 2017-11-07
- 2018
- Engelska.
-
Ingår i: Advanced Functional Materials. - : Wiley-Blackwell. - 1616-301X .- 1616-3028. ; 28:15
- Relaterad länk:
-
https://liu.diva-por... (primary) (Raw object)
-
visa fler...
-
http://liu.diva-port...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- A universal method to obtain record?high electronic Seebeck coefficients is demonstrated while preserving reasonable conductivities in doped blends of organic semiconductors through rational design of the density of states (DOSs). A polymer semiconductor with a shallow highest occupied molecular orbital (HOMO) level?poly(3?hexylthiophene) (P3HT) is mixed with materials with a deeper HOMO (PTB7, TQ1) to form binary blends of the type P3HTx:B1?x (0 ≤ x ≤ 1) that is p?type doped by F4TCNQ. For B = PTB7, a Seebeck coefficient S = 1100 µV K?1 with conductivity σ = 0.3 S m?1 at x = 0.10 is achieved, while for B = TQ1, S = 2000 µV K?1 and σ = 0.03 S m?1 at x = 0.05 is found. Kinetic Monte Carlo simulations with parameters based on experiments show good agreement with the experimental results, confirming the intended mechanism. The simulations are used to derive a design rule for parameter tuning. These results can become relevant for low?power, low?cost applications like (providing power to) autonomous sensors, in which a high Seebeck coefficient translates directly to a proportionally reduced number of legs in the thermogenerator, and hence in reduced fabrication cost and complexity.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- conjugated polymers
- doping
- kinetic Monte Carlo simulations
- organic thermoelectrics
- Seebeck coefficients
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas