Prototype of cathodoluminescent lamp for general lighting using carbon fiber field emission cathode

Sheshin, E.P.; Kolodyazhnyj, Artem Yu.; Chadaev, N.N.; Getman, Alexandr O.; Danilkin, M. I.; Ozol, Dmitry I.

doi:10.1116/1.5070108

Cited by 18 publications

(13 citation statements)

References 16 publications

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“…Best performance was achieved with 'warm white' P4 phosphors. The luminous flux of the bulbs was 250 lm with a luminous efficiency of 30-40 lm W −1 (comparable to CFLs) and color temperature from 2500 K to 5000 K [19].…”

Section: Visible Light Sourcesmentioning

confidence: 82%

“…Publications and patents describe designs of cathodoluminescent lamps using thermionic cathodes (in transmission-mode configuration) [15] and field emission cathodes (suited for both transmission-mode and reflectionmode configurations) [16][17][18][19]. However, the use of thermionic cathodes presents clear drawbacks in terms of efficiency and lifetime, due to the presence of heated structural elements.…”

Section: Device Geometry and Choice Of Cathodementioning

confidence: 99%

“…As an outstanding result, Sheshin et al [19] demonstrated a lamp consisting of a field emission cathode based on carbon fiber fed by a high-voltage built-in AC-DC converter of the electric line voltage (50 Hz, 230 V) contained in a standard E27 cap (see figure 5). The external view of the device was that of a lamp bulb R63.…”

Section: Visible Light Sourcesmentioning

confidence: 99%

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Electron beam pumped light emitting devices

Cuesta¹,

Harikumar²,

Monroy³

2022

J. Phys. D: Appl. Phys.

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Electron beam pumping is a promising technique to fabricate compact and efficient light emitters (lamps or lasers) in those spectral ranges where electrical injection is problematic due doping, transport and contacting issues. Interest in this technology has increased in recent years, particularly driven by the demand for ultraviolet sources and the difficulties in developing efficient AlGaN devices to cover the spectral range of 220-350 nm. The use of a highly energetic electron beam enables the semiconductor structure to be pumped without the need for doping or contacting. The active volume is defined by the accelerating voltage, which allows the homogeneous excitation of a large active volume. The efficiency of cathodoluminescent lamps can compete and even outperform LEDs in the deep ultraviolet window, and lasers can deliver high optical power (up to around 100 W). Here, we analyze the advantages and challenges of this technology platform, and discuss its potential applications.

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Section: Visible Light Sourcesmentioning

confidence: 82%

Section: Device Geometry and Choice Of Cathodementioning

confidence: 99%

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Electron beam pumped light emitting devices

Cuesta¹,

Harikumar²,

Monroy³

2022

J. Phys. D: Appl. Phys.

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“…A high concentration of the Tb activator is achievable compared to Ce activator in garnet type crystals [ 215 ]. This can significantly expand the field of utilization of such scintillation materials, for example, in alpha-, beta-voltaics [ 216 ], where the efficiency of energy conversion of ionizing radiation can reach or even exceed the efficiency of thermoelectric generators or cathodoluminescent light sources [ 217 ]. Moreover, due to high neutron cross-section, cerium doped Gd-based ternary garnets were shown to be promising scintillation materials to detect neutrons in a wide energy range [ 218 , 219 ].…”

Section: Disordered Doped Scintillation Materialsmentioning

confidence: 99%

Compositionally Disordered Crystalline Compounds for Next Generation of Radiation Detectors

et al. 2022

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The review is devoted to the analysis of the compositional disordering potential of the crystal matrix of a scintillator to improve its scintillation parameters. Technological capabilities to complicate crystal matrices both in anionic and cationic sublattices of a variety of compounds are examined. The effects of the disorder at nano-level on the landscape at the bottom of the conduction band, which is adjacent to the band gap, have been discussed. The ways to control the composition of polycationic compounds when creating precursors, the role of disorder in the anionic sublattice in alkali halide compounds, a positive role of Gd based matrices on scintillation properties, and the control of the heterovalent state of the activator by creation of disorder in silicates have been considered as well. The benefits of introducing a 3D printing method, which is prospective for the engineering and production of scintillators at the nanoscale level, have been manifested.

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“…This can significantly expand the field of utilization of such scintillation materials, for example, in alpha-voltaics [12], where the efficiency of energy . = ± = = conversion of ionizing radiation can reach or even exceed the efficiency of thermoelectric generators or cathodoluminescent light sources [13]. Moreover, due to high neutron cross-section, cerium doped Gd-based ternary garnets were shown to be promising scintillation materials to detect neutrons in a wide energy range [14,15].…”

Section: Introductionmentioning

confidence: 99%