- #1
uby
- 176
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Hello all,
I am trying to identify materials having a single dominant charge carrier having extremely low (on the order of 10^15 cm^-3) concentrations. Metals and extrinsically doped semiconductors, while both possessing a single dominant charge carrier (electrons or holes), tend to have carrier densities on the order of 10^23 cm^-3, which is about 8 orders of magnitude greater than I desire.
[Intrinsic semiconductors are unsuited for my application, since the concentration of electrons and holes are by definition equal (I need a single charge carrier to be dominant). Polymers are probably unsuited for my application as well, which will be above 400C.]
Are there any resources out there with data compilations for charge carrier densities at elevated temperatures?
Also, if there isn't any material that possesses such a low charge carrier density, is it possible to modify the band structure by application of a bias voltage or some other external means?
Thanks,
--uby
I am trying to identify materials having a single dominant charge carrier having extremely low (on the order of 10^15 cm^-3) concentrations. Metals and extrinsically doped semiconductors, while both possessing a single dominant charge carrier (electrons or holes), tend to have carrier densities on the order of 10^23 cm^-3, which is about 8 orders of magnitude greater than I desire.
[Intrinsic semiconductors are unsuited for my application, since the concentration of electrons and holes are by definition equal (I need a single charge carrier to be dominant). Polymers are probably unsuited for my application as well, which will be above 400C.]
Are there any resources out there with data compilations for charge carrier densities at elevated temperatures?
Also, if there isn't any material that possesses such a low charge carrier density, is it possible to modify the band structure by application of a bias voltage or some other external means?
Thanks,
--uby