Indium nitride

Crystal structure
__ In 3+      __ N 3−
General
Surname	Indium nitride
other names	Indium (III) nitride Indium nitrogen
Ratio formula	InN
Brief description	black solid
External identifiers / databases
CAS number 25617-98-5 EC number 247-130-6 ECHA InfoCard 100,042,831 PubChem 117560 Wikidata Q418616
properties
Molar mass	128.83 g mol −1
Physical state	firmly
density	6.89 g cm −3
Melting point	1100 ° C
safety instructions
GHS labeling of hazardous substances no GHS pictograms H and P phrases H: no H-phrases P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Indium nitride (InN) is an inorganic chemical compound of indium from the group of nitrides .

Extraction and presentation

Indium nitride can be obtained by reacting ammonium hexafluoroindate with ammonia at 580 to 600 ° C.

${\displaystyle \mathrm {(NH_{4})_{3}InF_{6}+4\ NH_{3}\longrightarrow InN+6\ NH_{4}F} }$

properties

Indium nitride is a black, air-resistant solid. It is dissolved by caustic soda and concentrated sulfuric acid , but not by the other mineral acids . It has a crystal structure of the wurtzite type (a = 353.3 pm, c = 569.3 pm). The compound is a III-V compound semiconductor formed from indium and nitrogen . Potential future applications of this material are in combination with gallium nitride in the area of solar cells .

The temperature-dependent band gap of InN is approx. 0.7  eV at 300  K and is in the infrared spectral range. Indium nitride and gallium nitride form the ternary compound semiconductor indium gallium nitride , the band gap of which can be selected over a very wide range from 0.7 to 3.4 eV in the manufacturing process through the ratio of the two components.

Thin polycrystalline structures of indium nitride show superconducting properties at temperatures below T _c = 3.3 K , which persist even under the influence of high magnetic flux densities .

literature

• Timothy David Veal, Christopher F. McConville, William J. Schaff: Indium Nitride and Related Alloys . CRC Press, 2011, ISBN 1-4398-5961-2 ( limited preview in Google Book Search).

Individual evidence

1. ↑ ^{a b c d} Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 872.
2. ↑ ^{a b c} data sheet Indium (III) nitride, 99.9% trace metals basis from Sigma-Aldrich , accessed on March 29, 2014 ( PDF ).
3. ^ William M. Haynes: CRC Handbook of Chemistry and Physics, 93rd Edition . CRC Press, 2012, ISBN 1-4398-8049-2 , pp. 4–67 ( limited preview in Google Book Search).
4. ↑ TD Veal, CF McConville, and WJ Schaff (Eds), Indium Nitride and Related Alloys (CRC Press, 2009)
5. ↑ V. Yu. Davydov: Absorption and Emission of Hexagonal InN. Evidence of Narrow Fundamental Band Gap (PDF; 86 kB) , Phys. Stat. Solidi (b) 229 (2002) R1 (engl.)
6. ↑ EL-ELA, FMABOU and EL-ASSY, BM: Electron transport in wurtzite InN . In: Pramana . tape 79 , 2012, p. 125 , doi : 10.1007 / s12043-012-0294-5 .
7. ↑ T. Inushima: Electronic structure of superconducting InN , in Sci. Techn. Adv. Mater. 7, 2006, pages 112; doi : 10.1016 / j.stam.2006.05.009 .