Hvad er stannisk oxid

Our TOPLUS has many years of experience.Our TOPLUS knows a lot about Stannic oxide.SnO2 is also an excellent transparent conductive material. It is the first transparent conductive material to be put into commercial use. In order to improve its conductivity and stability, it is often used for doping, such as SnO2:Sb, SnO2:F, etc. Both SnO2 and its doping have a tetragonal rutile structure as shown. Red is O, black is Sn, and SnO2 is composed of two Sn and four O atoms, and the lattice constant is a=b=0.4737 nm, c=0.3186 nm, and c/a=0.637. O^2-=0.140 nm, Sn^4+=0.071 nm. SnO2 is an n-type wide bandgap semiconductor with a forbidden band width of 3.5-4.0eV, visible light and infrared transmittance of 80%, a plasma edge of 3.2μm, a refractive index of >2, og en udryddelseskoefficient på 0.SNO2 har stærk vedhæftning. Det har en bindingskraft på op til 20 MPa med glas og keramik, en hårdhed på 7-8 og god kemisk stabilitet. Det kan modstå kemisk ætsning. SNO2 fungerer som en ledende film, og dens bærere kommer hovedsageligt fra krystaldefekter, det vil sige o ledige stillinger og elektroner leveret af doping urenheder.