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Unformatted text preview: distances have been kept the same. What kind of crystal structure is this hypothetical GaAs now, a diamond or zinc blende? Would it become n-type or p-type if it is doped with selenium? 3. (a) Using Appendix III, which of the listed semiconductors in Table 1-1 has the largest band gap? The smallest? Is there a noticeable pattern in the band gap energy of III-V compounds related to the column III element? (b) Among the indirect materials listed in Appendix III, which one has the smallest bandgap energy, and what is that at room temperature? Which one has the largest bandgap energy, and what is that?...
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- Spring '11