Editing Thallium (section)

===Electronics===
[[File:Thallium rod corroded.jpg|thumb|right|alt=A heavily pitted, blackish cylindrical rod, with extensive, crumbling brown-and-white corrosion|A corroded thallium rod]]
Thallium(I) sulfide's [[electrical conductivity]] changes with exposure to [[infrared light]], making this compound useful in [[photoresistor]]s.<ref name="CRC">{{cite book |author = Hammond, C. R. |title = The Elements, in Handbook of Chemistry and Physics |edition = 81st |publisher = CRC press |isbn = 978-0-8493-0485-9 |date = 2004-06-29 |url-access = registration |url = https://archive.org/details/crchandbookofche81lide }}</ref> Thallium selenide has been used in [[bolometer]]s for infrared detection.<ref>{{cite journal| bibcode = 1977ApOpt..16.2942N| title = Thallium selenide infrared detector| author = Nayer, P. S| author2 = Hamilton, O.| journal = Appl. Opt.| volume = 16| issue = 11| pages = 2942–4|date =1977| doi = 10.1364/AO.16.002942| pmid = 20174271}}</ref> [[Doping (semiconductor)|Doping]] selenium semiconductors with thallium improves their performance, thus it is used in trace amounts in [[selenium rectifier]]s.<ref name="CRC" /> Another application of thallium doping is the [[sodium iodide]] and [[cesium iodide]] crystals in [[gamma radiation]] detection devices. In these, the sodium iodide crystals are doped with a small amount of thallium to improve their efficiency as [[scintillation (physics)|scintillation]] generators.<ref>{{cite journal|pages =796–810|doi =10.1103/PhysRev.75.796|title =The Detection of Gamma-Rays with Thallium-Activated Sodium Iodide Crystals|date =1949|issue =5|last1 =Hofstadter|first1 =Robert|journal =Physical Review|volume =75|bibcode = 1949PhRv...75..796H }}</ref> Some of the electrodes in [[oxygen analyzer|dissolved oxygen analyzers]] contain thallium.<ref name="sl2001" />