Synthesis of strong SiV photoluminescent diamond particles on silica optical fiber by chemical vapor deposition

• 来源期刊: 中国物理B（英文版）
• 关键词: diamond silicon vacancy photoluminescence optical fiber
• 年，卷（期）: 2018,（3）
• 页码范围: 481-486
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/27/3/038101

摘要

The separated silicon-vacancy (SiV) photoluminescent diamond particles were synthesized on a silica optical fiber by hot filament chemical vapor deposition (HFCVD).The effects of the pre-treated method and chamber pressure on the microstructure and photoluminescence of the diamond particles were investigated.The results show that the diamond particles are homogeneously distributed on the surface of the optical fiber.With the chamber pressure increasing from 1.6 kPa to 3.5 kPa,the shape of the particles transforms from flake to circle,while the diamond particles cannot be deposited on the fiber with the pressure further increased to 4.5 kPa.The samples synthesized under 2.5 kPa chamber pressure are composed of diamond particles with size around 200-400 nm,exhibiting stronger SiV photoluminescence with the width of around 6 nm.