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Q2. (25 points) Given the band diagrams below: Case 1 Case 2 Case 3 band 3 band 3 band 3 a______ band 2 band 2

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Q2. (25 points) Given the band diagrams below: Case 1 Case 2 Case 3 band 3 band 3 band 3 a______ band 2 band 2 band 2 a --- a-- band 1 band 1 band 1 3. Assuming the T = 0 KL colorflabel the filled and empty states for Cases 1-3. (5 points) b. Characterize each material as metal, insulator or semiconductor. Explain your answer with a sentence each (5 points)

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