A diamond gammavoltaic cell utilizing surface conductivity and its response to different photon interaction mechanisms

Mackenzie, G R; Kaluvan, Suresh; Martin, Peter; Hutson, Chris; Connolley, Thomas; Cattelan, Mattia; Andrade, Hugo Dominguez; Martin, T.; Fox, Neil A.; Scott, Thomas Bligh

doi:10.1016/j.mtener.2021.100688

Cited by 5 publications

(3 citation statements)

References 68 publications

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“…However, very recently was proposed an innovative concept that solid‐state device able to convert highly penetrating γ‐radiations into electricity 87 . The core of this γ‐voltaic cell is an ultra‐pure single‐crystal diamond with a surface area of 0.2 cm 2 .…”

Section: Basic Concepts and Conversion Mechanismsmentioning

confidence: 99%

“…However, very recently was proposed an innovative concept that solid-state device able to convert highly penetrating γ-radiations into electricity. 87 The core of this γ-voltaic cell is an ultra-pure single-crystal diamond with a surface area of 0.2 cm 2 . Hydrogen termination of the diamond surface is necessary for the γ-conversion, likely because a conductive surface enables to capture the current and to scatter the high-energy photons generated in the insulating bulk.…”

Section: Gamma-voltaicsmentioning

confidence: 99%

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Nuclear batteries: Current context and near‐term expectations

Terranova

2022

Intl J of Energy Research

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Summary The batteries fuelled by radio‐isotopes have represented a significant technological solution for planetary science and exploration missions since the beginning of the space era. Now emerging researches and new concepts are making the nuclear batteries attractive also for relevant terrestrial applications. The present survey aims to summarize the evolution of technical programmes and to examine the multidisciplinary skills required to accelerate the transition of nuclear batteries from laboratory prototypes to fully functional systems.

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Section: Basic Concepts and Conversion Mechanismsmentioning

confidence: 99%

Section: Gamma-voltaicsmentioning

confidence: 99%

Nuclear batteries: Current context and near‐term expectations

Terranova

2022

Intl J of Energy Research

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“…Detectors based on diamond demonstrated a fast response [6,16] and high sensitivity [17] to X-ray beams, providing high applied electric fields with low bias voltage [18] as well as photovoltaic-mode operations [19,20], which enabled the successful application to the medical sector for the monitoring of radiation beams utilized in radiation therapy [21][22][23] and mammography [24]. Diamond films can be even utilized as suitable active material in electrochemical devices [25], radiovoltaic batteries [26][27][28][29], and concentrated solar converters [30] as well as it is an efficient electron emitter [31][32][33].…”

Section: Introductionmentioning

confidence: 99%

X-ray Spectrum Reconstruction by Diamond Detectors with Linear Response to Dose Rate

Trucchi

Ascarelli

2021

Crystals

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The absorbers method is here applied by interposing filters of variable thickness between the X-ray source and a detector so to attenuate the radiation intensity by using the attenuation coefficient as a selective photon energy operator. The analysis of the signal provided by a polycrystalline diamond thin film detector exposed to the energy-selectively-attenuated X-ray beam was used for the reconstruction of the radiation spectrum. The 50 μm thick diamond detector achieves conditions of linear response to the dose rate of the incident radiation (linearity coefficient of 0.997 ± 0.003) for a bias voltage ≥90 V, corresponding to an electric field ≥1.8 × 104 V/cm. Once the absorbers method is applied, only the detector signal linearity to dose rate allows reconstructing the source X-ray bremsstrahlung spectrum with sufficiently high accuracy.

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Direct energy conversion using Ni/SiC Schottky junction in 237Np and 241Am gamma ray regions

Fukuda

Kobata

Shobu

et al. 2022

Journal of Applied Physics

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Direct energy conversion has been investigated using Ni/SiC Schottky junctions with the irradiation of monochromatized synchrotron x rays mimicking the gamma rays of 237Np (30 keV) and 241Am (60 keV). Through current–voltage measurements, electrical energies were obtained for both types of gamma rays. The energy conversion efficiencies based on absorbed energy were found to be ∼1.6%, which is comparable to other previously described semiconducting systems. This result raises the prospect of energy recovery from nuclear wastes utilizing the present system, judging from the radiation tolerant nature of SiC. Additionally, we found different conversion efficiencies between the two samples during the same process. This could be explained using hard x-ray photoelectron spectroscopy and secondary ion mass spectroscopy measurements, suggesting the creation of Ni–Si compounds at the interface in the sample with poor performance. Hence, such combined measurements are useful to provide data that electrical measurements cannot provide us.

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A diamond gammavoltaic cell utilizing surface conductivity and its response to different photon interaction mechanisms

Cited by 5 publications

References 68 publications

Nuclear batteries: Current context and near‐term expectations

Nuclear batteries: Current context and near‐term expectations

X-ray Spectrum Reconstruction by Diamond Detectors with Linear Response to Dose Rate

Direct energy conversion using Ni/SiC Schottky junction in 237Np and 241Am gamma ray regions

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