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6CCVD Research

Seeded growth of boron arsenide single crystals with high thermal conductivity

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2018-01-15
JournalApplied Physics Letters
AuthorsFei Tian, Bai Song, Bing Lv, Jingying Sun, Shuyuan Huyan
InstitutionsUniversity of Houston, The University of Texas at Dallas
Citations53

Abstract

Section titled ā€œAbstractā€

Materials with high thermal conductivities are crucial to effectively cooling high-power-density electronic and optoelectronic devices. Recently, zinc-blende boron arsenide (BAs) has been predicted to have a very high thermal conductivity of over 2000 W māˆ’1 Kāˆ’1 at room temperature by first-principles calculations, rendering it a close competitor for diamond which holds the highest thermal conductivity among bulk materials. Experimental demonstration, however, has proved extremely challenging, especially in the preparation of large high quality single crystals. Although BAs crystals have been previously grown by chemical vapor transport (CVT), the growth process relies on spontaneous nucleation and results in small crystals with multiple grains and various defects. Here, we report a controllable CVT synthesis of large single BAs crystals (400-600 Ī¼m) by using carefully selected tiny BAs single crystals as seeds. We have obtained BAs single crystals with a thermal conductivity of 351 Ā± 21 W māˆ’1 Kāˆ’1 at room temperature, which is almost twice as conductive as previously reported BAs crystals. Further improvement along this direction is very likely.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2014 - Emerging challenges and materials for thermal management of electronics [Crossref]
  2. 2013 - First-principles determination of ultrahigh thermal conductivity of boron arsenide: A competitor for diamond? [Crossref]
  3. 2013 - Ab initio study of the unusual thermal transport properties of boron arsenide and related materials [Crossref]
  4. 2015 - Anomalous pressure dependence of thermal conductivities of large mass ratio compounds [Crossref]
  5. 2016 - Boron arsenide phonon dispersion from inelastic x-ray scattering: Potential for ultrahigh thermal conductivity [Crossref]
  6. 1993 - Thermal conductivity of isotopically modified single crystal diamond [Crossref]
  7. 1996 - Fundamentals of Heat and Mass Transfer
  8. 1973 - Nonmetallic crystals with high thermal conductivity [Crossref]
  9. 2015 - Experimental study of the proposed super-thermal-conductor: BAs [Crossref]
  10. 1972 - Crystal growth and properties of boron monoarsenide [Crossref]

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