首页|Characterization of mosaic diamond wafers and hot-filament epilayers by using HR-EBSD technics

Characterization of mosaic diamond wafers and hot-filament epilayers by using HR-EBSD technics

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? 2022 Elsevier B.V.Tungsten (W) incorporated diamond film was homoepitaxially grown on a mosaic diamond wafer by hot-filament chemical vapor deposition. The crystallinity of the W incorporated epilayer and the original mosaic diamond wafer was characterized by using high-resolution electron backscatter diffraction (HR-EBSD). From kernel average misorientation maps (KAM) derived from HR-EBSD measurements, it was found that the numerical value of KAM and the width of coalescence boundary region (CBR) of W incorporated epilayers were much smaller than those of original mosaic diamond wafers and not only in the CBR but also in the bulk area, the crystalline quality of the W incorporated epilayer is better than that of the original mosaic diamond wafers. It is suggested that the primal role for the W incorporation is strain reduction near threading dislocations during growth.

CoalescenceCrystallinityDislocation reductionHot-filament CVDHR-EBSDKAM mapMosaic diamondRotationStrain reductionThreading dislocationW incorporation

Tanaka K.、Umezawa H.、Chayahara A.、Yamada H.、Ohmagari S.、Tachiki M.、Takano M.

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Advanced Power Electronics Research Center National Institute of Advanced Industrial Science and Technology (AIST)

Sensing System Research Center National Institute of Advanced Industrial Science and Technology (AIST)

International Center for Materials Nanoarchitectonics National Institute for Materials Science (NIMS)

Research Network and Facility Services Division National Institute for Materials Science (NIMS)

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2022

Diamond and Related Materials

Diamond and Related Materials

EISCI
ISSN:0925-9635
年,卷(期):2022.123
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