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An oxide semiconductor (perovskite‐type Mn2O3) is reported which has a narrow and direct bandgap of 0.45 eV and a high Vickers hardness of 15 GPa. All the known materials with similar electronic band structures (e.g., InSb, PbTe, PbSe, PbS, and InAs) play crucial roles in the semiconductor industry. The perovskite‐type Mn2O3 described is much stronger than the above semiconductors and may find useful...
Perovskite‐type Mn2O3 described by S. V. Ovsyannikov and co‐workers on page 8185, is a unique, hard semiconductor having a narrow and direct bandgap of 0.45 eV and switchable p‐n electrical conduction. Pv‐Mn2O3, comprising nontoxic and inexpensive elements, is much stronger than traditional semiconductors, and promises applications in the semiconductor industry, e.g., in IR detectors and other devices...
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