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Which of the following is/are the n-type semiconducting oxides?

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in Corrosion Engineering by (98.5k points)
Which of the following is/are the n-type semiconducting oxides?

(a) CdO2

(b) TiO2

(c) Al2O3, CdO2, and TiO2

(d) CoO

The question was posed to me in exam.

My enquiry is from High-Temperature Corrosion topic in section High Temperature Corrosion of Corrosion Engineering

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Correct option is (c) Al2O3, CdO2, and TiO2

The best I can explain: Semiconducting oxides such as CdO2, Al2O3, CdO, TiO2, Ta2O5, and SiO2 are n-type semiconductors. It contains an excess of negatively charged electronic current carriers I.e. electrons.

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