Lead selenide

Lead selenide
Other names

Lead(II) selenide
Clausthalite
Identifiers
CAS number 12069-00-0 Y
Properties
Molecular formula PbSe
Molar mass 286.16 g/mol
Melting point

1078 °C, 1351 K, 1972 °F
Structure
Crystal structure Halite (cubic), cF8
Space group Fm3m, No. 225
Coordination
geometry		 Octahedral (Pb2+)
Octahedral (Se2−)
Hazards
EU Index 082-001-00-6
034-002-00-8
EU classification Repr. Cat. 1/3
Toxic (T)
Harmful (Xn)
Dangerous for the environment (N)
R-phrases R61, R20/22, R23/25, R33, R62, R50/53
S-phrases (S1/2), S20/21, S28, S53, S45, S60, S61
Related compounds
Other anions Lead(II) oxide
Lead(II) sulfide
Lead telluride
Other cations Carbon monoselenide
Silicon monoselenide
Germanium(II) selenide
Tin(II) selenide
Related compounds Thallium selenide
Bismuth selenide
 Y (verify) (what is: Y/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Lead selenide (PbSe), or lead(II) selenide, a selenide of lead, is a semiconductor material. It forms cubic crystals of the NaCl structure; it has a direct bandgap of 0.27 eV at room temperature. (Note that[1] incorrectly identifies PbSe and other IV–VI semiconductors as indirect gap materials.) It is a grey crystalline solid material.

It is used for manufacture of infrared detectors for thermal imaging[2], operating at wavelengths between 1.5–5.2 µm. It does not require cooling, but performs better at lower temperatures. The peak sensitivity depends on temperature and varies between 4–4.7 µm.

Single crystal nanorods and polycrystalline nanotubes of lead selenide were synthesized via controlled organism membranes. The diameter of the nanorods is approx. 45 nm and their length is up to 1100 nm, for nanotubes the diameter is 50 nm and the length up to 2000 nm.[3]

Lead selenide nanocrystals embedded into various materials can be used as quantum dots, for example in nanocrystal solar cells.

The mineral clausthalite is a naturally occurring lead selenide.

It may be formed by union of the elements.

References

  1. ^ Kittel, Charles (1986). Introduction to Solid State Physics (6th ed.). New York: Wiley & Sons. ISBN 9780471874744. 
  2. ^ Lawson, W. D. (1951). "A Method of Growing Single Crystals of Lead Telluride and Lead Selenide". Journal of Applied Physics 22 (12): 1444. doi:10.1063/1.1699890.  edit
  3. ^ Li, L.; Wu, Q. S.; Ding, Y. P. (2004). "Living bio-membrane bi-template route for simultaneous synthesis of lead selenide nanorods and nanotubes". Nanotechnology 15 (12): 1877. doi:10.1088/0957-4484/15/12/033.  edit

External links