Hello i am student who is studying semiconductor. and i have studying about oxide semiconductor. during studying, i know that oxide semiconductor such as IGZO, has a good current on/off ratio. but i dont know why.
is that have any mechanisms(like percolation conduct)? or its just property of oxide?
thank you for all your answers.
Hello,
Oxide semiconductors generally have large bandgap values compared to single-element and III-V ones, this should be the most fundamental reason for low residual currents in off-state.
Apart from that, larger ionization energies for both donors and acceptors promotes this trend further (though, in some sense, this fact follows from the first one).
Please keep on studying and asking good questions!
Sung BIN Lim Another really cool think about oxide semiconductors is the orbital structure and how incorporating different elements changes the Ion/Ioff! For example indium has bigger s-orbital than Zn so you can essentially change the electron concentration by tailoring your film! This can also be used to change the Ion/Ioff. There are some really good papers out there on this. I've attached one. Good luck! :)
Article Room-Temperature Fabrication of Transparent Flexible Thin-Fi...
- Badges
- Science topic
- Similar topics
- Engineering
- Materials Engineering
- Powders