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Which Estimates the Number of Electrons Per Cubic Centimeter Excited

Question 5

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Which estimates the number of electrons per cubic centimeter excited to the conduction band as a function of temperature and the band gap energy. Which estimates the number of electrons per cubic centimeter excited to the conduction band as a function of temperature and the band gap energy. -Refer to Exhibit 22-2. The band gap of pure crystalline silicon is 1.94´10<sup>-</sup><sup>19</sup> J at 300 K. How many electrons are excited from the valence band to the conduction band at this temperature in a 1.00 cm<sup>3</sup> silicon crystal? A) 1.70´10<sup>9</sup> B) 4.80´10<sup>15</sup> C) 0.555 N<sub>A</sub> D) 1.46´10<sup>7</sup>
-Refer to Exhibit 22-2. The band gap of pure crystalline silicon is 1.94´10-19 J at 300 K. How many electrons are excited from the valence band to the conduction band at this temperature in a 1.00 cm3 silicon crystal?


A) 1.70´109
B) 4.80´1015
C) 0.555 NA
D) 1.46´107

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