Characterization of AlN metal-semiconductor-metal diodes in the spectral range of 44–360nm: Photoemission assessments

BenMoussa, A.; Hochedez, J.‐F.; Dahal, R.; Li, J.; Lin, J. Y.; Jiang, Hongxing; Soltani, A.; Jaeger, J.C. de; Kroth, U.; Richter, M.

doi:10.1063/1.2834701

Cited by 58 publications

(43 citation statements)

References 16 publications

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“…Further detector-based comparisons were recently performed against a dosimetric free-air ionisation Review Article chamber standard in the X-ray region [46] and against radiometric scales realised by other national metrology institutes in the UV, VUV, and EUV ranges via calibrated photodiodes. Based on the high-accuracy spectral responsivity scale, and by use of dispersed SR of high spectral purity, PTB has supported detector development for industrial and scientific applications [49][50][51][52]. Furthermore fundamental quantities were determined, such as the mean energy required for producing an electron-hole pair in silicon and gallium arsenide [53][54][55], the quantum efficiencies of gold and copper [56,57] and of caesium iodide photocathodes [58], the electron-impact ionisation and photoionisation cross sections of noble gases [59][60][61][62], and the cross sections for resonant Raman scattering on silicon [63].…”

Section: Detector-based Radiometrymentioning

confidence: 99%

A quarter‐century of metrology using synchrotron radiation by PTB in Berlin

Beckhoff¹,

Gottwald²,

Klein³

et al. 2009

Physica Status Solidi (b)

131

114

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For more than 25 years, the Physikalisch‐Technische Bundesanstalt has been strongly engaged in the field of metrology using synchrotron radiation. In Berlin, this research programme started together with the user operation of the electron storage ring BESSY I in the early 1980s. At the beginning, the work was focused on fundamental radiometry, i.e. using the storage ring as a primary radiation source standard and operating beamlines for source and detector calibration in the vacuum ultraviolet spectral range. Meanwhile, at the electron storage rings BESSY II and Metrology Light Source in Berlin‐Adlershof, the activities have been extended to a broad range of fundamental and applied photon metrology in the range from the far infrared to hard X‐rays, including methods like cryogenic radiometry, reflectometry and X‐ray fluorescence spectroscopy. In the present review, we give a short historical introduction to this work, describe our laboratories and the basic radiometric principles, and present examples of recent applications, largely performed within the framework of scientific cooperations with external partners from industry and research. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Section: Detector-based Radiometrymentioning

confidence: 99%

A quarter‐century of metrology using synchrotron radiation by PTB in Berlin

Beckhoff¹,

Gottwald²,

Klein³

et al. 2009

Physica Status Solidi (b)

131

114

View full text Add to dashboard Cite

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“…Over the wavelength range of 170 nm to 200 nm, the photoresponse is constant, in contrast to the diamond MSM24-r photodetector, but with a lower responsivity of approximately 4.5 mA/W at a bias voltage of + 30 V. Then the photoresponse increases (depending on the polarity of the applied voltage) due mainly to the photoemission current contribution [18]. The photo-emitted electrons are pulled back to the device due to the high positive voltage of + 30 V applied.…”

Section: Absolute Spectral Responsivitymentioning

confidence: 99%

“…5), and moderate external quantum efficiency (EQE) due to electrode shadowing, if they are not semi-transparent in the wavelength range of interest. Dedicated corrective design can however be foreseen [18].…”

Section: Motivation For Utilizing a Planar Structure -Msm Photodetectorsmentioning

confidence: 99%

Recent developments of wide-bandgap semiconductor based UV sensors

BenMoussa

Soltani

Schühle

et al. 2009

Diamond and Related Materials

Self Cite

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Future missions for space astronomy and solar research require innovative vacuum ultraviolet (VUV) photodetectors. Present UV and VUV detectors exhibit serious limitations in performance, technology complexity and lifetime stability. New developments of metal-semiconductor-metal (MSM) solar-blind photodetectors based on diamond, cubic boron nitride (c-BN), and wurtzite aluminium nitride (AlN) are reported. In the wavelength range of interest, the characteristics of the MSM photodetectors present extremely low dark current, high breakdown voltage, and good responsivity. Diamond, c-BN, and AlN MSM photodetectors are sensitive and stable under UV irradiation. They show a 200 nm to 400 nm rejection ratio of more than four orders of magnitude and demonstrate the advantages of wide band gap materials for VUV radiation detection in space.

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“…Among them, SiC (Wright & Horsfall 2007), GaN (Monroy et al 1999) and II-VI compound-based detectors (Sou et al 2001) show a photodetector cut-off wavelength longer than 300 nm, whereas cBN , AlN (Butun et al 2006;Li et al 2006;Dahal et al 2007;BenMoussa et al 2008) and diamond-based (Adam et al 2004;Balducci et al 2005 By their nature, cBN, AlN and diamond semiconductors are the primary choice as the photosensitive materials for solar EUV and VUV photon detection (spectral range of interest 10 k 200 nm) and meet the requirements for UV radiometers planned to study the Sun since they provide high radiation hardness, near-ultraviolet (NUV) and visible-blindness (wavelength cut-off value 225 nm), mechanical, chemical and thermal stability and no need of cooling system (i.e., roomtemperature operation).…”

Section: Photodetectorsmentioning

confidence: 99%

New observation strategies for the solar UV spectral irradiance

Cessateur

Lilensten

Wit

et al. 2012

J. Space Weather Space Clim.

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Many applications in space weather and in space situational awareness require continuous solar spectral irradiance measurements in the UV, and to a lesser degree in the visible band. Most space-borne solar radiometers are made out of two different parts: (i) a front filter that selects the passband and (ii) a detector that is usually based on silicon technology. Both are prone to degradation, which may be caused either by the degradation of the filter coating due to local deposition or to structural changes, or by the degradation of the silicon detector by solar radiative and energetic particle fluxes. In this study, we provide a theoretical analysis of the filter degradation that is caused by structural changes such as pinholes; contamination-induced degradation will not be considered. We then propose a new instrumental concept, which is expected to overcome, at least partially, these problems. We show how most of the solar UV spectrum can be reconstructed from the measurement of only five spectral bands. This instrumental concept outperforms present spectrometers in terms of degradation. This new concept in addition overcomes the need for silicon-based detectors, which are replaced by wide band gap material detectors. Front filters, which can contribute to in-flight degradation, therefore are not required, except for the extreme-UV (EUV) range. With a small weight and a low telemetry, this concept may also have applications in solar physics, in astrophysics and in planetology.

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Characterization of AlN metal-semiconductor-metal diodes in the spectral range of 44–360nm: Photoemission assessments

Cited by 58 publications

References 16 publications

A quarter‐century of metrology using synchrotron radiation by PTB in Berlin

A quarter‐century of metrology using synchrotron radiation by PTB in Berlin

Recent developments of wide-bandgap semiconductor based UV sensors

New observation strategies for the solar UV spectral irradiance

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