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Title: Increased negatively charged nitrogen-vacancy centers in fluorinated diamond

We investigated the effect of fluorine-terminated diamond surface on the charged state of shallow nitrogen vacancy defect centers (NVs). Fluorination is achieved with CF{sub 4} plasma, and the surface chemistry is confirmed with x-ray photoemission spectroscopy. Photoluminescence of these ensemble NVs reveals that fluorine-treated surfaces lead to a higher and more stable negatively charged nitrogen vacancy (NV{sup −}) population than oxygen-terminated surfaces. NV{sup −} population is estimated by the ratio of negative to neutral charged NV zero-phonon lines. Surface chemistry control of NV{sup −} density is an important step towards improving the optical and spin properties of NVs for quantum information processing and magnetic sensing.
Authors:
;  [1]
  1. School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States)
Publication Date:
OSTI Identifier:
22218119
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 5; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CARBON TETRAFLUORIDE; CHEMISTRY; CONTROL; CRYSTALS; DIAMONDS; FLUORINATION; FLUORINE; NITROGEN; PHONONS; PHOTOEMISSION; PHOTOLUMINESCENCE; PLASMA; QUANTUM INFORMATION; SPIN; SURFACES; VACANCIES; X RADIATION; X-RAY SPECTROSCOPY