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Title: Blue-light-emitting color centers in high-quality hexagonal boron nitride

Journal Article · · Physical Review. B
ORCiD logo [1];  [2];  [3];  [4];  [3];  [3];  [3];  [5];  [5];  [2];  [3]
  1. Univ. of California, Berkeley, CA (United States). Kavli Energy NanoScience Inst.; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry
  2. Univ. of California, Berkeley, CA (United States). Kavli Energy NanoScience Inst.; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry; Technical Univ. of Munich (Germany). Walter-Schottky-Inst.
  5. National Inst. for Materials Science (NIMS), Tsukuba (Japan). Advanced Materials Lab.

Light emitters in wide-band-gap semiconductors are of great fundamental interest and have potential as optically addressable qubits. Here we describe a unique color center in high-quality hexagonal boron nitride (h-BN) with a sharp emission line at 435 nm. The emitters are activated and deactivated by electron beam irradiation and have spectral and temporal characteristics consistent with atomic color centers weakly coupled to lattice vibrations. The emitters are conspicuously absent from commercially available h-BN and are present in only ultrahigh-quality h-BN grown using a high-pressure, high-temperature Ba-B-N flux/solvent, suggesting that these emitters originate from impurities or related defects specific to this unique synthetic route. Lastly, our results imply that the light emission is activated and deactivated by electron beam manipulation of the charge state of an impurity-defect complex.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Science Foundation (NSF)
Grant/Contract Number:
AC02-05CH11231; DMR-1807233; 1542741
OSTI ID:
1574342
Journal Information:
Physical Review. B, Vol. 100, Issue 15; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 17 works
Citation information provided by
Web of Science

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Cited By (2)

Stimulated Emission Depletion Microscopy with Color Centers in Hexagonal Boron Nitride journal June 2021
Optical control of the charge state of color centers in hexagonal boron nitride text January 2020

Figures / Tables (5)


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