Yttrium Selenide is a crystal grown product generally immediately available in most volumes. Technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.
Yttrium is a Block D, Group 3, Period 5 element. The number of electrons in each of Yttrium's shells is 2, 8, 18, 9, 2 and its electronic configuration is [Kr] 4d1 5s2. In its elemental form Yttrium's CAS number is 7440-65-5. The yttrium atom has a radius of 177.6.pm and it's Van der Waals radius is 200.pm. Insoluble compounds of Yttrium are non-toxic, although water soluble compounds are somewhat toxic. Yttrium has the highest thermo-dynamic affinity for oxygen of any element. This characteristic is the basis for many of its applications. While not part of the rare earth series, it resembles the heavy rare earths which are sometimes referred to as the “yttrics” for this reason. Another unique characteristic derives from its ability to form crystals with useful properties. Yttrium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra high purity); metals in the form of foil, sputtering target, and rod, and compounds assubmicron and nanopowder. Some of the many applications of yttrium include in ceramics for crucibles for molten reactive metals, in florescent lighting phosphors, computer displays and automotive fuel consumption sensors.Yttria stabilized zirconium oxide are used in high temperature applications, such as in thermal plasma sprays to protect aerospace high temperature surfaces and as an electrolyte in solid oxide fuel cells. The name Yttrium originated from a Swedish village near Vaxholm called Yttbery where Yttrium was discovered. Crystals of the yttrium-iron-garnet (YIG) variety are essential to microwave communication equipment. The phosphor Eu:Y2O2S creates the red color in televisions. Crystals of the yttrium-aluminum-garnet (YAG) variety are utilized with neodymium in a number of laser applications. Yttria can also increase the strength of metallic alloys. Yttrium was first discovered by Johann Gadolin in 1794. See Yttrium research below.
Selenium is a Block P, Group 16, Period 4 element. The number of electrons in each of Selenium's shells is 2, 8, 18, 6 and its electronic configuration is [Ar] 3d10 4s2 4p4. In its elemental form selenium's CAS number is 7782-49-2. The selenium atom has a radius of 116.pm and it's Van der Waals radius is 190.pm. The EPA does not classify selenium as carcinogenic, although selenium sulfide is a probable carcinogen. Selenates and selenites which are compounds of selenium, are highly toxic. Hydrogen selenide gas (SeH2) is the most acutely toxic compound of selenium. Selenium exhibits both photovoltaic action, where light is converted directly into electricity, and photoconductive action, where the electrical resistance decreases with increased illumination. of photocells and exposure meters for photographic use, as well as solar cells. Below its melting point, selenium is a p-type semiconductor and has many uses in electronic and solid-state applications. Selenium is available as metal and compounds with purities from 99% to 99.9999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Selenium was first discovered by Jons Berzelius in 1817. The origin of the name Selenium comes from the Greek word "Selênê" meaning moon. See selenium research below.
American Elements semi conducting materials are crystal structures produced from ultra high purity starting materials synthesized by our high purity production facility which includes several large electric muffle furnaces, a tube furnace for hydrogen reduction, 50 gallon glass-lined Pfaudler reactors supported by our analytical laboratory containing X-ray diffraction, SEM, AA, BET surface area, and ICP Spectrometry for trace metals analysis. See a discussion of American Elements Ultra High Purity and Analytical capabilities. See Crystal Growth for processes used to fabricate semiconductor materials, which include:
Crystal "pulling" by the Czochaiski method for production of semiconductor materials
Flux growth and gradient freeze
Directional solidification of fluorites using both the Bridgman-Stockbarger and float zoning techniques
Bis(?(2)-2-phen-oxy-propionato-?O:O')bis-[(1,10-phenanthroline-?N,N')bis-(2-phen-oxy-propionato-?O,O')ytterbium(III)].
Shen JB, Liu JL, Zhao GL.
Acta Crystallogr E Struct Rep Online. 2011 Oct 1;67(Pt 10):m1361. Epub 2011 Sep 14.
PMID:
22058692
[PubMed]
"Covalency in the 4f Shell of tris-cyclopentadienyl Ytterbium (YbCp3) - a Spectroscopic Evaluation."
Denning RG, Harmer JR, Green JC, Irwin M.
J Am Chem Soc. 2011 Nov 4. [Epub ahead of print]
PMID:
22053917
[PubMed - as supplied by publisher]
Fingermark detection on non-porous and semi-porous surfaces using YVO(4):Er,Yb luminescent upconverting particles.
Ma R, Shimmon R, McDonagh A, Maynard P, Lennard C, Roux C.
Forensic Sci Int. 2011 Oct 31. [Epub ahead of print]
PMID:
22047749
[PubMed - as supplied by publisher]
Synthesis, Structure, and Reactivity of a Supramolecular Ytterbium(III)-Aqua Complex Featuring Infinite Stacks of C?C Bonds for Photocycloaddition Reactions.
Komori-Orisaku K, Yamashita S, Isozaki T, Sugiura K, Koide Y.
Chemistry. 2011 Oct 21. doi: 10.1002/chem.201102292. [Epub ahead of print] No abstract available.
PMID:
22021148
[PubMed - as supplied by publisher]
Label-free in vivo fiber-based optical-resolution photoacoustic microscopy.
Hajireza P, Shi W, Zemp RJ.
Opt Lett. 2011 Oct 15;36(20):4107-9. doi: 10.1364/OL.36.004107.
PMID:
22002401
[PubMed - in process]
Energy transfer and enhanced 1.54 ?m emission in Erbium-Ytterbium disilicate thin films.
Miritello M, Cardile P, Lo Savio R, Priolo F.
Opt Express. 2011 Oct 10;19(21):20761-72. doi: 10.1364/OE.19.020761.
PMID:
21997086
[PubMed - in process]
Photo darkening of rare earth doped silica.
Mattsson KE.
Opt Express. 2011 Oct 10;19(21):19797-812. doi: 10.1364/OE.19.019797.
PMID:
21996988
[PubMed - in process]
Beam quality and noise properties of coherently combined ytterbium doped single frequency fiber amplifiers.
Tünnermann H, Pöld JH, Neumann J, Kracht D, Willke B, Wessels P.
Opt Express. 2011 Sep 26;19(20):19600-6. doi: 10.1364/OE.19.019600.
PMID:
21996901
[PubMed - in process]
p-Wave Cold Collisions in an Optical Lattice Clock.
Lemke ND, von Stecher J, Sherman JA, Rey AM, Oates CW, Ludlow AD.
Phys Rev Lett. 2011 Sep 2;107(10):103902. Epub 2011 Aug 30.
PMID:
21981504
[PubMed - in process]
Mode-locked 0.5 ?J fiber laser at 976 nm.
Lhermite J, Lecaplain C, Machinet G, Royon R, Hideur A, Cormier E.
Opt Lett. 2011 Oct 1;36(19):3819-21. doi: 10.1364/OL.36.003819.
PMID:
21964108
[PubMed - in process]
Acid-responsive microcapsules: the loading-unloading processes.
Samanta D, Sankar RM, Jaisankar SN, Alam MS, Mandal AB.
Chem Commun (Camb). 2011 Oct 25;47(43):11975-7. Epub 2011 Sep 30.
PMID:
21963934
[PubMed - in process]
Electrochemical spectroscopic investigations on the interaction of an ytterbium complex with DNA and their analytical applications such as biosensor.
Ilkhani H, Ganjali MR, Arvand M, Hejazi MS, Azimi F, Norouzi P.
Int J Biol Macromol. 2011 Dec 1;49(5):1117-23. Epub 2011 Sep 16.
PMID:
21939686
[PubMed - in process]
A family of 13 tetranuclear zinc(ii)-lanthanide(iii) complexes of a [3 + 3] Schiff-base macrocycle derived from 1,4-diformyl-2,3-dihydroxybenzene.
Feltham HL, Klöwer F, Cameron SA, Larsen DS, Lan Y, Tropiano M, Faulkner S, Powell AK, Brooker S.
Dalton Trans. 2011 Oct 25;40(43):11425-32. Epub 2011 Sep 21.
PMID:
21935549
[PubMed - in process]
Generation of 578-nm yellow light over 10 mW by second harmonic generation of an 1156-nm external-cavity diode laser.
Lee WK, Park CY, Yu DH, Park SE, Lee SB, Kwon TY.
Opt Express. 2011 Aug 29;19(18):17453-61. doi: 10.1364/OE.19.017453.
PMID:
21935111
[PubMed - in process]
In vivo near-realtime volumetric optical-resolution photoacoustic microscopy using a high-repetition-rate nanosecond fiber-laser.
Shi W, Hajireza P, Shao P, Forbrich A, Zemp RJ.
Opt Express. 2011 Aug 29;19(18):17143-50. doi: 10.1364/OE.19.017143.
PMID:
21935076
[PubMed - in process]
Self-referenceable frequency comb from a gigahertz diode-pumped solid-state laser.
Pekarek S, Südmeyer T, Lecomte S, Kundermann S, Dudley JM, Keller U.
Opt Express. 2011 Aug 15;19(17):16491-7. doi: 10.1364/OE.19.016491.
PMID:
21935013
[PubMed - in process]
Thermal effects in kilowatt all-fiber MOPA.
Fan Y, He B, Zhou J, Zheng J, Liu H, Wei Y, Dong J, Lou Q.
Opt Express. 2011 Aug 1;19(16):15162-72. doi: 10.1364/OE.19.015162.
PMID:
21934878
[PubMed - in process]
Background-free broadband CARS spectroscopy from a 1-MHz ytterbium laser.
Kumar V, Osellame R, Ramponi R, Cerullo G, Marangoni M.
Opt Express. 2011 Aug 1;19(16):15143-8. doi: 10.1364/OE.19.015143.
PMID:
21934875
[PubMed - in process]
Fabrication and characterization of new Yb-doped zirconia-germano-alumino silicate phase-separated nano-particles based fibers.
Kir'yanov AV, Paul MC, Barmenkov YO, Das S, Pal M, Bhadra SK, Zarate LE, Guzman-Chavez AD.
Opt Express. 2011 Aug 1;19(16):14823-37. doi: 10.1364/OE.19.014823.
PMID:
21934843
[PubMed - in process]
White emission of lithium ytterbium tetraphosphate nanocrystals.
Strek W, Marciniak L, Bednarkiewicz A, Lukowiak A, Wiglusz R, Hreniak D.
Opt Express. 2011 Jul 18;19(15):14083-92. doi: 10.1364/OE.19.014083.
PMID:
21934770
[PubMed - in process]
Toenail selenium status and the risk of Barrett's esophagus: the Netherlands Cohort Study.
Steevens J, Schouten LJ, Driessen AL, Huysentruyt CJ, Keulemans YC, Goldbohm RA, van den Brandt PA.
Cancer Causes Control. 2010 Oct 10. [Epub ahead of print]PMID: 20936529 [PubMed - as supplied by publisher]Related citations
Promotion of Growth in Mungbean (Phaseolus aureus Roxb.) by Selenium is Associated with Stimulation of Carbohydrate Metabolism.
Malik JA, Kumar S, Thakur P, Sharma S, Kaur N, Kaur R, Pathania D, Bhandhari K, Kaushal N, Singh K, Srivastava A, Nayyar H.
Biol Trace Elem Res. 2010 Oct 9. [Epub ahead of print]PMID: 20936436 [PubMed - as supplied by publisher]Related citations
Transition metal chemistry of cyclodiphosphanes containing phosphine and amide-phosphine functionalities: Formation of a stable dipalladium(II) complex containing a Pd-P s-bond.
Balakrishna MS, Venkateswaran R, Mague JT.
Dalton Trans. 2010 Oct 8. [Epub ahead of print]PMID: 20936211 [PubMed - as supplied by publisher]Related citations
Associations between blood metals and fecundity among women residing in New York State.
Bloom MS, Louis GM, Sundaram R, Kostyniak PJ, Jain J.
Reprod Toxicol. 2010 Oct 6. [Epub ahead of print]PMID: 20933593 [PubMed - as supplied by publisher]Related citations
The protective role of selenium in recalcitrant Acer saccharium L. seeds subjected to desiccation.
Pukacka S, Ratajczak E, Kalemba E.
J Plant Physiol. 2010 Oct 6. [Epub ahead of print]PMID: 20933296 [PubMed - as supplied by publisher]Related citations
Trace element concentrations in nesting flatback turtles (Natator depressus) from Curtis Island, Queensland, Australia.
Ikonomopoulou MP, Olszowy H, Limpus C, Francis R, Whittier J.
Mar Environ Res. 2010 Sep 25. [Epub ahead of print]PMID: 20933265 [PubMed - as supplied by publisher]Related citations
Correlation between serum selenium level and febrile seizures.
Mahyar A, Ayazi P, Fallahi M, Javadi A.
Pediatr Neurol. 2010 Nov;43(5):331-4.PMID: 20933176 [PubMed - in process]Related citations
Anti-Tumor Activity of Aloe vera Against DMBA/Croton Oil-Induced Skin Papillomagenesis in Swiss Albino Mice.
Saini M, Goyal PK, Chaudhary G.
J Environ Pathol Toxicol Oncol. 2010;29(2):127-35.PMID: 20932247 [PubMed - in process]Related citations
Aluminosilicate Relatives: Chalcogenoaluminogermanates Rb(3)(AlQ(2))(3)(GeQ(2))(7) (Q = S, Se).
Rothenberger A, Shafaei-Fallah M, Kanatzidis MG.
Inorg Chem. 2010 Oct 8. [Epub ahead of print]PMID: 20932019 [PubMed - as supplied by publisher]Related citations
A Nutrient Approach to Prostate Cancer Prevention: The Selenium and Vitamin E Cancer Prevention Trial (SELECT).
Dunn BK, Richmond ES, Minasian LM, Ryan AM, Ford LG.
Nutr Cancer. 2010 Oct;62(7):896-918.PMID: 20924966 [PubMed - in process]Related citations
Serum levels of selenium in patients with breast cancer before and after treatment of external beam radiotherapy.
Franca CA, Nogueira CR, Ramalho A, Carvalho AC, Vieira SL, Penna AB.
Ann Oncol. 2010 Oct 5. [Epub ahead of print]PMID: 20924074 [PubMed - as supplied by publisher]Related citations
Kenji Soda--researching enzymes with the spirit of an alpinist.
Yoshimura T, Mihara H, Ohshima T, Tanizawa K.
J Biochem. 2010 Oct;148(4):371-9.PMID: 20924059 [PubMed - in process]Related citations
Inhibitory effect of arsenic on aerobic gut flora in rat.
Choudhry ZK, Misbahuddin M, Hosain AK, Saleh AA.
Bangladesh Med Res Counc Bull. 2009 Dec;35(3):79-83.PMID: 20922909 [PubMed - in process]Related citations
[Endemic and biogeochemical features of the territory of Chuvash Republic]
[No authors listed]
Vestn Ross Akad Med Nauk. 2010;(8):40-6. Russian. PMID: 20922843 [PubMed - in process]Related citations
Interaction of uranyl with Se(IV) and Se(VI) in aqueous acid solutions by means of capillary electrophoresis.
Sladkov V.
Electrophoresis. 2010 Oct 4. [Epub ahead of print]PMID: 20922762 [PubMed - as supplied by publisher]Related citations
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Chen H, Tan C, Wu T.
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Use of dietary vitamin E and selenium (Se) to increase the shelf life of modified atmosphere packaged light lamb meat.
Ripoll G, Joy M, Muñoz F.
Meat Sci. 2010 Sep 18. [Epub ahead of print]PMID: 20920835 [PubMed - as supplied by publisher]Related citations
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Vonnahme KA, Luther JS, Reynolds LP, Hammer CJ, Carlson DB, Redmer DA, Caton JS.
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Agamy O, Ben Zeev B, Lev D, Marcus B, Fine D, Su D, Narkis G, Ofir R, Hoffmann C, Leshinsky-Silver E, Flusser H, Sivan S, Söll D, Lerman-Sagie T, Birk OS.
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Yttrium Selenide is a crystal grown product generally immediately available in most volumes. Technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.
Yttrium is a Block D, Group 3, Period 5 element. The number of electrons in each of Yttrium's shells is 2, 8, 18, 9, 2 and its electronic configuration is [Kr] 4d1 5s2. In its elemental form Yttrium's CAS number is 7440-65-5. The yttrium atom has a radius of 177.6.pm and it's Van der Waals radius is 200.pm. Insoluble compounds of Yttrium are non-toxic, although water soluble compounds are somewhat toxic. Yttrium has the highest thermo-dynamic affinity for oxygen of any element. This characteristic is the basis for many of its applications. While not part of the rare earth series, it resembles the heavy rare earths which are sometimes referred to as the “yttrics” for this reason. Another unique characteristic derives from its ability to form crystals with useful properties. 
Yttrium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra high purity); metals in the form of foil, sputtering target, and rod, and compounds as
submicron and nanopowder. Some of the many applications of yttrium include in ceramics for crucibles for molten reactive metals, in florescent lighting phosphors, computer displays and automotive fuel consumption sensors.Yttria stabilized zirconium oxide are used in high temperature applications, such as in thermal plasma sprays to protect aerospace high temperature surfaces and as an electrolyte in solid oxide fuel cells. The name Yttrium originated from a Swedish village near Vaxholm called Yttbery where Yttrium was discovered. Crystals of the yttrium-iron-garnet (YIG) variety are essential to microwave communication equipment. The phosphor Eu:Y2O2S creates the red color in televisions. Crystals of the yttrium-aluminum-garnet (YAG) variety are utilized with neodymium in a number of laser applications. Yttria can also increase the strength of metallic alloys. Yttrium was first discovered by Johann Gadolin in 1794. See Yttrium research below.
Selenium is a Block P, Group 16, Period 4 element. The number of electrons in each of Selenium's shells is 2, 8, 18, 6 and its electronic configuration is [Ar] 3d10 4s2 4p4. In its elemental form selenium's CAS number is 7782-49-2. The selenium atom has a radius of 116.pm and it's Van der Waals radius is 190.pm. The EPA does not classify selenium as carcinogenic, although selenium sulfide 
is a probable carcinogen. Selenates and selenites which are compounds of selenium, are highly toxic. Hydrogen selenide gas (SeH2) is the most acutely toxic compound of selenium. Selenium exhibits both photovoltaic action, where light is converted directly into electricity, and photoconductive action, where the electrical resistance decreases with increased illumination. of photocells and exposure meters for photographic use, as 
well as solar cells. Below its melting point, selenium is a p-type semiconductor and has many uses in electronic and solid-state applications. Selenium is available as metal and compounds with purities from 99% to 99.9999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Selenium was first discovered by Jons Berzelius in 1817. The origin of the name Selenium comes from the Greek word "Selênê" meaning moon. See selenium research below.
