期刊
ADVANCED MATERIALS
卷 23, 期 30, 页码 3414-+出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201101460
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资金
- National Research Foundation of Korea (NRF) [2009-0093823]
- Air Force Research Laboratory [FA2386-10.1-4172]
- National Research Foundation of Korea [2009-0093823] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The role of the interface roughness of Bi-Te core/shell nanowires is reported in reducing lattice thermal conductivity, which are prepared by on-film formation of nanowire (OFF-ON) that is capable of growing high-quality single-crystalline Bi nanowires, and by the subsequent sputtering of Te onto the Bi nanowires. The rough interface Bi-Te core/shell nanowires exhibit lower thermal conductivities than that of smooth interface counterparts, while electrical conductivities for these two types of nanowires are similar. We propose that the rough interface plays a pivotal role in suppressing phonon transport, which in turn, reduces thermal conductivity significantly.
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