Paramagnetische elektronenresonanz in bornitrid

Geist, D.; Römelt, G.

doi:10.1016/0038-1098(64)90404-1

Cited by 30 publications

(15 citation statements)

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“…Nv being more prevelant [124][125][126][127][128][129] . Two types of Nv paramagnetic centres have been identified: (i) three-boron centres (TBC), in which an unpaired electron interacts with three equivalent boron (B 11 ) nuclei, producing 10-line EPR spectra, and (ii), one-boron centres (OBC), in which oxidative damage at the centre forces the unpaired electron to interact with only a single B 11 , producing 4-line EPR spectra.…”

Section: Hyperfine Couplingmentioning

confidence: 97%

Single-photon emitters in hexagonal boron nitride: a review of progress

2020

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This report summarizes progress made in understanding properties such as zerophonon-line energies, emission and absorption polarizations, electron-phonon couplings, strain tuning and hyperfine coupling of single photon emitters in hexagonal boron nitride. The primary aims of this research are to discover the chemical nature of the emitting centres and to facilitate deployment in device applications. Critical analyses of the experimental literature and data interpretation, as well as theoretical approaches used to predict properties, are made. In particular, computational and theoretical limitations and challenges are discussed, with a range of suggestions made to overcome these limitations, striving to achieve realistic predictions concerning the nature of emitting centers. A symbiotic relationship is required in which calculations focus on properties that can easily be measured, whilst experiments deliver results in a form facilitating mass-produced calculations.

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Section: Hyperfine Couplingmentioning

confidence: 97%

Single-photon emitters in hexagonal boron nitride: a review of progress

2020

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“…They are important as they can act as activation, recombination, absorption, or photosensitivity centres [23,25,26,50]. In experiments, they have been observed to display 10-line EPR spectra [19][20][21][22][23][24] ; and this with a carbon atom replacing the nitrogen, named C N .…”

Section: A Three-boron Centre Defectsmentioning

confidence: 99%

“…Of particular interest is that carbon-doped centres can give rise to intense photoluminescence (PL) [25,26]. Although speculations based on EPR studies have been made about the form of the TBC and OBC centres [19][20][21][22][23][24], their exact nature remains uncertain.…”

Section: Introductionmentioning

confidence: 99%

“…vacancies) [15,16] during the preparation of single layer h-BN and the deterministic production of defects through electron beam radiation [17] have been shown to have considerable effects on electronic and magnetic properties of h-BN. While both nitrogen (N v ) and boron (B v ) vacancies can act as paramagnetic centres in h-BN [18], electron paramagnetic resonance (EPR) studies indicate that N v are more important [19][20][21][22][23][24]. Two types of paramagnetic centres have been identified: (i) three-boron centres (TBC) in which an unpaired electron interacts with three equivalent boron (B 11 ) nuclei, producing 10-line EPR spectra, and (ii) one-boron centres (OBC) in which oxidative damage at the centre forces the unpaired electron to interact with only a single B 11 , producing 4-line EPR spectra.…”

Section: Introductionmentioning

confidence: 99%

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Defect states in hexagonal boron nitride: Assignments of observed properties and prediction of properties relevant to quantum computation

2018

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“…1718 ' 21 ' 22 In sample C this ten-line spectrum was observed to be superimposed on a large broad signal (with a linewidth A/fas large as 500 G) as shown in Fig. 3(c), where the sharp signal at the center is presented on an expanded scale in Fig.…”

Section: Resultsmentioning

confidence: 83%

Cesium and bromine doping into hexagonal boron nitride

1986

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Using a two-zone method, the possible formation of an intercalation compound of hexagonal boron nitride (BN) with Cs and Br 2 was investigated. Only a few percent weight increase was observed by doping BN with Cs and Br 2 . The electron paramagnetic resonance (EPR) signal was significantly modified by Cs doping, which is attributed to the reaction between the Cs atoms and spin resonance centers (N vacancies) in BN; no change in the EPR spectra was observed with Br 2 doping. However, the deep blue colored Cs-BN complex reported by Mugiya and co-workers was not obtained with the two-zone method. Though no evidence of systematic intercalation reaction in BN was observed in contrast to graphite host materials, intercalation islands induced by the introduction of Cs atoms were suggested by the transmission electron microscopy (TEM) observations.

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Paramagnetische elektronenresonanz in bornitrid

Cited by 30 publications

References 0 publications

Single-photon emitters in hexagonal boron nitride: a review of progress

Single-photon emitters in hexagonal boron nitride: a review of progress

Defect states in hexagonal boron nitride: Assignments of observed properties and prediction of properties relevant to quantum computation

Cesium and bromine doping into hexagonal boron nitride

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