Effet photo Hall du cinabre

Butti, C.; Raymond, André; Bombré, F.

doi:10.1002/pssa.2210360114

Cited by 11 publications

(3 citation statements)

References 10 publications

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“…The majority of studies concerning this substance have been carried out on natural crystals [2,3]. Indeed, the synthetic crystals available at the present time are neither purer nor bigger than the best natural specimens because their crystallogenesis proves to be difficult [4,5]. In fact, the two types of samples do not give fundamentally different results.…”

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confidence: 96%

“…However, very little information is available about electrical properties of mercury sulphide. It is very resistant : Its mobility, determined mainly through photo-Hall effect [9,10], is about 30 cm2/V . s and it does not vary much as a function of temperature.…”

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confidence: 99%

“…between liquid helium and room temperature. The measurement of currents is carried out by a logarithmic picoammeter which detects currents between 10-4 A and [10][11][12] A. Weaker currents (dark current in particular) are measured by a linear electrometer which is capable of reaching down to 10 -14 A.…”

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confidence: 99%

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Determination of certain trapping parameters in mercury sulphide (α-HgS) by Thermally Stimulated Conductivity

Leyris

Aicardi

1980

J. Phys. France

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2014 Nous présentons dans cet article les résultats de nos mesures de courants stimulés thermiquement sur le sulfure de mercure. Celles-ci nous ont permis de mettre en évidence quatre pics de T.S.C. Nous étudions plus particulièrement deux d'entre eux. Le premier, qui apparait à une température de 165 K, est expliqué comme obéissant à un processus monomoléculaire avec repiégeage lent. Les différentes méthodes applicables à ce cas permettent de déterminer la profondeur du niveau (Et = 300 meV), la densité de pièges (Nt = 2,55 1012 cm-3) et la section efficace de capture (st = 1,8 10-19 cm2). Le second apparait à 104 K. Les théories existantes ne nous permettent pas d'obtenir tous ses paramètres. Nous n'en déduisons que la profondeur du niveau (Et = 120 meV).

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confidence: 96%

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confidence: 99%

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Determination of certain trapping parameters in mercury sulphide (α-HgS) by Thermally Stimulated Conductivity

Leyris

Aicardi

1980

J. Phys. France

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Cathodoluminescence of cinnabar evidence of a donor–acceptor-type transition

Aicardi

Leyris

Massé

1977

Phys. Stat. Sol. (a)

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Measurements are made of spectrum shift with excitation intensity by means of time resolved spectroscopy, over a broad emission band of mercuric sulphide peaked at 1·65 eV with a width of 320 meV. The behaviour of the decay is measured at 4 K for different emission band energies. It is shown that the experimental results are in agreement with a donor–acceptor type “t‐shift”, “j‐shift”, and the t−n law of the light decay. Since the band is very broad, the interaction of the lattice with the different pairs is considered.

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Study of band-gap shrinkage in cinnabar (α-HgS) by cathodoluminescence under very strong excitation

Massé¹,

Aicardi²,

Butti³

1977

Phys. Stat. Sol. (a)

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The effects of a very strong excitation on the edge luminescence of a-HgS are studied. Characteristic modifications are observed (emission peak shift towards low energy, broadening of the spectrum). The emission peak shift is interpreted in terms of a band-gap shrinkage b y interaction between free carriers. The state density of the conduction band is calculated, as well as the Fermi quasi-level of the electrons. Since the semiconductor is degenerate at the excitations used, the absence of a Burstein shift leads to the assumption that the radiative transitions have their origin in the bottom of the conduction band. E s wird der EinfluB einer sehr starken Anregung auf die Kantenlumineszenz von HgS-cr untersucht. Charakteristische Modifikationen werden beobachtet (Verschiebung der Emissionsmaxima nach niedriger Energie, Spektrenverbreiterung). Die Verschiebung der Emissionsmaxima wird mit einer Verkleinerung der Bandlucke durch Wechselwirkung zwischen freien Ladungstragern erklart, Sowohl die Zustandsdichte des Leitungsbandes wird berechnet als auch die Quasifermikante der Elektronen. Da der Halbleiter bei den benutzten Anregungen entartet ist, fiihrt das Fehlen einer Bursteinverschiebung zu der Annahme, daB die strahlenden UbergLnge ihren Ursprung am unteren Rand des Leitungsbandes haben.

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Effet photo Hall du cinabre

Cited by 11 publications

References 10 publications

Determination of certain trapping parameters in mercury sulphide (α-HgS) by Thermally Stimulated Conductivity

Determination of certain trapping parameters in mercury sulphide (α-HgS) by Thermally Stimulated Conductivity

Cathodoluminescence of cinnabar evidence of a donor–acceptor-type transition

Study of band-gap shrinkage in cinnabar (α-HgS) by cathodoluminescence under very strong excitation

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