Title:
白色単結晶ダイヤモンドを製造する方法
Document Type and Number:
Japanese Patent JP5613841
Kind Code:
B2
Abstract:
The present application discloses the details of a microwave plasma chemical vapor deposition process that uses Nitrogen and Diborane simultaneously in combination along with the Methane and Hydrogen gases to grow white color diamonds. The invention embodies using nitrogen to avoid inclusions and impurities in the CVD diamond samples and Diborane for the color enhancement during the growth of diamond. It is also found that heating of the so grown diamonds to 2000 C results in significant color enhancement due to the compensation of Nitrogen and Boron centers in the samples. The origin of the various colors in diamond is explained on the basis of the band diagram of CVD diamond.
Inventors:
ミスラ、 デヴィ シャンカー
Application Number:
JP2013530117A
Publication Date:
October 29, 2014
Filing Date:
October 11, 2010
Export Citation:
Assignee:
トゥーエイ テクノロジーズ プライベート リミテッドＩＩａ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｐｔｅ．Ｌｔｄ．
International Classes:
C01B31/06; C30B29/04; C23C16/27; C23C16/511
Attorney, Agent or Firm:
Hidekazu Miyoshi
Masakazu Ito
Field Yuko
Masakazu Ito
Field Yuko