Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Germanium oxide

Germanium and germanium oxide are transparent to the infrared and are used in infrared spectroscopes and other optical equipment, including extremely sensitive infrared detectors. [Pg.94]

Scintillation detectors are substances which fluoresce when stmck by x-radiation. Scintillation can, therefore, serve to convert x-ray photons into visible or ultraviolet light. Scintillation materials include thaUium-activatedcrystals of sodium iodide, NaI(Tl), potassium iodide, KI(T1), or cesium iodide, CsI(Tl) crystals of stilbene (a, P-diphenylethylene) [588-59-0] and anthracene [120-12-7] bismuth germanium oxide [12233-56-6] ... [Pg.50]

Ni [182], V [183], and A1 [184]. SU-M [185] is a mesoporous germanium oxide with crystalline pore walls, possessing one of the largest primitive cells and the lowest framework density of any inorganic material. The channels are defined by 30-rings. Structural and thermal information show that there exists a mismatch between framework stability and template decomposition. The latter requires temperatures higher than 450 °C, while the structure is preserved only until 300 °C. [Pg.133]

Gastrointestinal absorption of germanium oxides and cationic salts is poor. No reports of germanium accumulation in human or animal tissue exist. [Pg.881]

For the polymerization, either in the melt or solid phase, the reaction is driven to the polymer by removing ethylene glycol. The polymerization reaction is typically catalyzed by solutions consisting of antimony trioxide or germanium oxide. Both polycondensation catalysts also catalyze the reverse reaction, which is driven by an excess of ethylene glycol at melt conditions, generally above 255 °C. The polymerization reaction follows second-order kinetics with an activation energy of 22 000 cal/mol [6],... [Pg.568]

Figure 5-54 shows the flat band potential observed for an intrinsic semiconductor electrode of germanium in aqueous solutions as a function of pH. The flat band potential, shifts in the cathodic (negative) direction with increasing pH at the rate of 59 mV / pH in agreement with Eqn. 5-87 at room temperature. The iso-electric point of germanium electrode is found to be about pH 2.5, which is close to the iso-electric point of germanium oxide. [Pg.186]

Germanium(IV) chloride is prepared by reacting germanium metal with chlorine or by treating germanium oxide, Ge02, with hydrochloric acid ... [Pg.316]

In contrast to sihcon, the instability of the germanium oxides has prevented the widespread use of germanium in integrated circuits. Native germanium oxide (Ge02) is water soluble and forms a poor interface with Ge, which results in facile removal of the oxide layer and a high density of electronic defects [75]. These properties render Ge02 unsuitable for use in transistor applications. [Pg.333]


See other pages where Germanium oxide is mentioned: [Pg.189]    [Pg.296]    [Pg.113]    [Pg.113]    [Pg.439]    [Pg.439]    [Pg.253]    [Pg.278]    [Pg.279]    [Pg.281]    [Pg.287]    [Pg.537]    [Pg.174]    [Pg.403]    [Pg.180]    [Pg.132]    [Pg.163]    [Pg.74]    [Pg.565]    [Pg.881]    [Pg.399]    [Pg.247]    [Pg.166]    [Pg.315]    [Pg.316]    [Pg.320]    [Pg.320]    [Pg.232]    [Pg.333]    [Pg.336]    [Pg.537]    [Pg.135]    [Pg.369]    [Pg.278]    [Pg.279]    [Pg.281]    [Pg.287]   
See also in sourсe #XX -- [ Pg.191 , Pg.192 ]

See also in sourсe #XX -- [ Pg.466 ]

See also in sourсe #XX -- [ Pg.191 , Pg.192 ]

See also in sourсe #XX -- [ Pg.313 ]

See also in sourсe #XX -- [ Pg.373 , Pg.375 ]

See also in sourсe #XX -- [ Pg.326 ]

See also in sourсe #XX -- [ Pg.472 ]

See also in sourсe #XX -- [ Pg.379 ]

See also in sourсe #XX -- [ Pg.429 , Pg.471 ]

See also in sourсe #XX -- [ Pg.35 , Pg.37 , Pg.38 ]




SEARCH



Bismuth germanium oxide

Germanium (II) Oxide GeO

Germanium (IV) Oxide GeO

Germanium and Silicon Oxide Nanolenses

Germanium hydrides oxidative addition

Germanium oxidation states

Germanium oxide , crystal structure

Germanium oxide coordination number

Germanium oxide disulfide

Germanium oxide oxidation kinetics

Germanium oxide particles

Germanium oxide purification

Germanium oxide reactions

Germanium oxides aluminum hydride

Germanium oxides reactions with

Germanium oxides structure

Oxidation reactions germanium polymers

Reduction of Germanium(IV) Oxide

© 2024 chempedia.info