# fonge

```ENGR 132—Spring 2015
Name:
Section
Number:
EMERALDA FONG
fonge
001
Problem 1: Basic MATLAB Script and Plot
A:
Page 1 of 3
ENGR 132—Spring 2015
B:
1.
The number of doctorate degrees earned in 2008 in the U.S is 24231.5
2.
The number of doctorate degrees earned in 2006 in South Korea and Taiwan is 4872.5
C:
Because there are not enough data to calculate the number of degrees for 2013 since the maximum
year given was only until 2009.
Problem 2: Band Gap Energy
A:
1.
The energy is 2.6885 eV when frequency is 6.5*10^14 Hz
2.
The energy is 2.0680 eV when wavelength is 6*10^-7 m
B:
1.
Violet
3.1021
Blue
2.6123
Green
2.4330
Yellow
2.1769
Orange
2.1031
Red
1.9090
Page 2 of 3
ENGR 132—Spring 2015
2.
C:
Predicted band gap energy
The band gap energy of the semiconducting material in the bulk is 1.5 eV
Percent difference
There is a difference of 28% as the known band gap energy of silicon is
1.17 eV but the calculated one was 1.5 eV. This is because the material’s
dielectric constant (dimensionless) given was just a given value to
calculate the estimation.
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