Tetragonal red and yellow HgI2–CdI2 crystals for X- and γ-ray solid-state detectors directionally solidified under argon pressure of 20atm

Cummings, Thomas G.; Marı́n, C.; Ostrogorsky, A.G.; Bürger, A.; Bliss, Mary

doi:10.1016/j.jcrysgro.2006.10.134

Cited by 3 publications

(1 citation statement)

References 5 publications

(6 reference statements)

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“…Фiзичнi властивостi кристалiв PbI 2 є менш вивченими, нiж HgI 2 [2]. В той же час PbI 2 є бiльш перспективним матерiалом для розробки радiацiйних детекторiв завдяки їх бiльшiй хiмiчнiй стабiльностi [4,5]. Такi матерiали придатнi як для розробки радiацiйних детекторiв, основаних на прямому перетвореннi сигналу радiацiї в електричний сигнал, так i розробки радiацiйних сцинтиляторiв.…”

Section: вступunclassified

Фотолюмінесцентні властивості шаруватих твердих розчинів Pb1-xCdxI2

Гнатенко¹,

Furier²,

Буківський³

et al. 2022

Ukr. J. Phys.

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Проведено дослідження спектрів фотолюмінесценції, в тому числі із розділенням в часі, і фотодифузійного струму кристалів PbI2 та твердих розчинів Pb1-xCdxI2. Встановлено, що дані кристали мають монополярну (діркову) провідність. Показанаможливість утворення в твердих розчинах кластерів PbI2 різних розмірів. Встановлено, що величина розщеплення між Γ3–- та Γ1–-екситонними станами в таких кластерах становить 30 та 36 меВ для x = 0,50 та x = 0,70, відповідно. Виявлено, що для x ≥ 0,50 має місце автолокалізація екситонів в кластерах PbI2.

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Section: вступunclassified

Фотолюмінесцентні властивості шаруватих твердих розчинів Pb1-xCdxI2

Гнатенко¹,

Furier²,

Буківський³

et al. 2022

Ukr. J. Phys.

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Study of the photoluminescence and photoelectric properties of Pb1−XCdXI2 alloys

Furyer

Skubenko

Bukivskij

et al. 2010

Journal of Applied Physics

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The low-temperature photoluminescence (PL), photodiffusion current, photoconductivity (PC), and nuclear quadrupolar resonance spectra of the layered PbI2 single crystals and Pb1−XCdXI2 alloys were investigated. It was shown that the alloys are formed for any composition ratio and they have monopolar (hole) PC. The exciton PL band energy depends linearly on the composition ratio. It was found that the PbI2 clusters with various sizes are formed in Pb1−XCdXI2 alloys. For X≤0.50 the clusters are large [more than the Bohr radius of exciton in PbI2 (RB)] while for X=0.50 they are both large and small (smaller than RB). It was shown that these clusters are formed within the crystal layer. For Pb1−XCdXI2 alloys with X=0.70 the broad PL band at 2.1 eV is observed. This band is caused by the formation of the self-trapping excitons in PbI2 clusters. It was found that this PL band determines the emission of the alloys at T=300 K.

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Mercury Compounds

2012

Compound Semiconductor Bulk Materials and Characterizations

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Mercury exists in three forms: elemental mercury, inorganic mercury compounds (primarily mercuric chloride), and organic mercury compounds (primarily methyl mercury). All forms of mercury are quite toxic, and each form exhibits different health effects. Acute (short-term) exposure to high levels of elemental mercury in humans results in central nervous system (CNS) effects such as tremors, mood changes, and slowed sensory and motor nerve function. Chronic (long-term) exposure to elemental mercury in humans also affects the CNS, with effects such as erethism (increased excitability), irritability, excessive shyness, and tremors. Human studies are inconclusive regarding elemental mercury and cancer. Acute exposure to inorganic mercury by the oral route may result in effects such as nausea, vomiting, and severe abdominal pain. The major effect from chronic exposure to inorganic mercury is kidney damage. Animal studies have reported effects such as alterations in testicular tissue, increased resorption rates, and abnormalities of development. Mercuric chloride (an inorganic mercury compound) exposure has been shown to result in forestomach, thyroid, and renal tumors in experimental animals. Acute exposure of humans to very high levels of methyl mercury results in CNS effects such as blindness, deafness, and impaired level of consciousness. Chronic exposure to methyl mercury in humans also affects theCNS with symptoms such as paresthesia (a sensation of pricking on the skin), blurred vision, malaise, speech difficulties, and constriction of the visual field. Methyl mercury exposure, via the oral route, has led to significant developmental effects. Infants born to women who ingested high levels of methyl mercury exhibited mental retardation, ataxia, constriction of the visual field, blindness, and cerebral palsy. Please Note: The main sources of information for this fact sheet are EPA's Integrated Risk Information System (IRIS) (11), which contains information on inhalation chronic toxicity and the RfC for elemental mercury, oral chronic toxicity and the RfD for inorganic and methyl mercury, EPA's Mercury Study Report to Congress (2), and the Agency for Toxic Substances and Disease Registry's (ATSDR's) Toxicological Profile for Mercury. (1) Other secondary sources include the

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Tetragonal red and yellow HgI2–CdI2 crystals for X- and γ-ray solid-state detectors directionally solidified under argon pressure of 20atm

Cited by 3 publications

References 5 publications

Фотолюмінесцентні властивості шаруватих твердих розчинів Pb1-xCdxI2

Фотолюмінесцентні властивості шаруватих твердих розчинів Pb1-xCdxI2

Study of the photoluminescence and photoelectric properties of Pb1−XCdXI2 alloys

Mercury Compounds

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