Decrease in thermal conductivity in polymeric P3HT nanowires by size-reduction induced by crystal orientation: new approaches towards thermal transport engineering of organic materials

Rojo, Miguel Muñoz; Martı́n, Jaime San; Grauby, Stéphane; Borca‐Tasciuc, Theodorian; Dilhaire, S.; Martín‐González, Marisol

doi:10.1039/c4nr00107a

Cited by 65 publications

(59 citation statements)

References 41 publications

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“…More recently, Rojo et al demonstrate an increase of thermal conductivity in polymeric P3HT nanowire with different diameters by crystal orientation, similar to the observation in Nylon‐11 nanofibers . This work reports the measurement of 3ω scanning thermal microscopy (SThM) in P3HT nanowire fabricated by anodic aluminum oxide template ( Figure a–c).…”

Section: Manipulation Of Thermal Conductivitysupporting

confidence: 76%

Thermal Transport in Conductive Polymer–Based Materials

Zhou

Chen

2019

Adv Funct Materials

152

106

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The demand for flexible conductive materials has motivated many recent studies on conductive polymer–based materials. However, the thermal conductivity of conductive polymers is relatively low, which may lead to serious heat dissipation problems for device applications. This review provides a summary of the fundamental principles for thermal transport in conductive polymers and their composites, and recent advancements in regulating their thermal conductivity. The thermal transport mechanisms in conductive polymer–based materials and up‐to‐date experimental approaches for measuring thermal conductivity are first summarized. Effective approaches for the regulation of thermal conductivity are then discussed. Finally, thermal‐related applications and future perspectives are given for conductive polymers and their composites.

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Section: Manipulation Of Thermal Conductivitysupporting

confidence: 76%

Thermal Transport in Conductive Polymer–Based Materials

Zhou

Chen

2019

Adv Funct Materials

152

106

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“…[ 12,13 ] Interestingly, the thermal conductivity of bulk polymers as well as conjugated macromolecules can be tuned by controlling molecular orientation. [14][15][16] In order to increase the modest electrical conductivity of polymers, a number of strategies have been proposed, including careful doping, [ 4,11,[17][18][19][20][21] making composites of polymers with conductive fi llers such as CNTs, [22][23][24] or fabricating multilayer composite A broad range of organic electronic applications rely on the availability of both p-and n-type organic semiconductors, and the possibility to deposit them as sequential layers or to form spatial patterns. Examples include transport layers in diodes (OLEDs, photovoltaics, etc.…”

Section: Doi: 101002/adma201505521mentioning

confidence: 99%

Photoinduced p‐ to n‐type Switching in Thermoelectric Polymer‐Carbon Nanotube Composites

et al. 2016

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“…The Bohr exciton radius, and phonon and electron mean free paths are on the same length scales as NW size adjustment. In thermoelectric power generation, the NW diameter can effectively scatter phonons, thereby reducing thermal conductivity and enhancing the thermoelectric figure of merit (ZT)1415161718192021.…”

mentioning

confidence: 99%

Thermal and Thermoelectric Transport in Highly Resistive Single Sb2Se3 Nanowires and Nanowire Bundles

Shellaiah

Sun

2016

Sci Rep

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In this study, we measured the thermal conductivity and Seebeck coefficient of single Sb2Se3 nanowires and nanowire bundles with a high resistivity (σ ~ 4.37 × 10−4 S/m). Microdevices consisting of two adjacent suspended silicon nitride membranes were fabricated to measure the thermal transport properties of the nanowires in vacuum. Single Sb2Se3 nanowires with different diameters and nanowire bundles were carefully placed on the device to bridge the two membranes. The relationship of temperature difference on each heating/sensing suspension membranes with joule heating was accurately determined. A single Sb2Se3 nanowire with a diameter of ~ 680 nm was found to have a thermal conductivity (kNW) of 0.037 ± 0.002 W/m·K. The thermal conductivity of the nanowires is more than an order of magnitude lower than that of bulk materials (k ~ 0.36–1.9 W/m·K) and highly conductive (σ ~ 3 × 104 S/m) Sb2Se3 single nanowires (k ~ 1 W/m·K). The measured Seebeck coefficient with a positive value of ~ 661 μV/K is comparable to that of highly conductive Sb2Se3 single nanowires (~ 750 μV/K). The thermal transport between wires with different diameters and nanowire bundles was compared and discussed.

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Decrease in thermal conductivity in polymeric P3HT nanowires by size-reduction induced by crystal orientation: new approaches towards thermal transport engineering of organic materials

Abstract: Thermal conductivity reduction is observed in P3HT nanowires inside porous alumina, upon size confinement due to a change in crystal orientation.

Cited by 65 publications

References 41 publications

Thermal Transport in Conductive Polymer–Based Materials

Thermal Transport in Conductive Polymer–Based Materials

Photoinduced p‐ to n‐type Switching in Thermoelectric Polymer‐Carbon Nanotube Composites

Thermal and Thermoelectric Transport in Highly Resistive Single Sb2Se3 Nanowires and Nanowire Bundles

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