TY - JOUR
T1 - Ultralow thermal conductivity of fullerene derivatives
AU - Wang, Xiaojia
AU - Liman, Christopher D.
AU - Treat, Neil D.
AU - Chabinyc, Michael L.
AU - Cahill, David G.
PY - 2013/8/21
Y1 - 2013/8/21
N2 - Recently, Duda reported that the fullerene derivative [6,6]-phenyl-C 61-butyric acid methyl ester (PCBM) has the lowest thermal conductivity Λ ever observed in a fully dense solid, Λ ≈ 0.03 W m-1 K-1. We have investigated a variety of phases and microstructures of PCBM and the closely related compound [6,6]-phenyl-C 61-butyric acid n-butyl ester (PCBNB) and find that the thermal conductivities of PCBM and PCBNB films are mostly limited to the range 0.05 < Λ < 0.06 W m-1 K-1 with a few samples having slightly higher Λ. The conductivities we observe are ≈70% larger than reported by Duda but are still "ultralow" in the sense that the thermal conductivity is a factor of ≈3 below the conductivity predicted by the minimum thermal conductivity model using an estimate of the thermally excited modes per molecule.
AB - Recently, Duda reported that the fullerene derivative [6,6]-phenyl-C 61-butyric acid methyl ester (PCBM) has the lowest thermal conductivity Λ ever observed in a fully dense solid, Λ ≈ 0.03 W m-1 K-1. We have investigated a variety of phases and microstructures of PCBM and the closely related compound [6,6]-phenyl-C 61-butyric acid n-butyl ester (PCBNB) and find that the thermal conductivities of PCBM and PCBNB films are mostly limited to the range 0.05 < Λ < 0.06 W m-1 K-1 with a few samples having slightly higher Λ. The conductivities we observe are ≈70% larger than reported by Duda but are still "ultralow" in the sense that the thermal conductivity is a factor of ≈3 below the conductivity predicted by the minimum thermal conductivity model using an estimate of the thermally excited modes per molecule.
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U2 - 10.1103/PhysRevB.88.075310
DO - 10.1103/PhysRevB.88.075310
M3 - Article
AN - SCOPUS:84884507449
SN - 1098-0121
VL - 88
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 7
M1 - 075310
ER -