kTe (eV)

ni (cm−3)

Our calculated/measured

6.58 - 10.44

9.10 × 109 - 1.79 × 1010

Kotp E F and Al-Ojeery A A (2012) [24]

1.90 - 3.50

6.40 × 109 - 7.40 × 109

Ghimire B et al. (2014) [25]

4.87 - 9.96

0.84 × 109 - 1.14 × 1011

Nojiri K 2015 [26]

~1

109 - 1012

Hashmi S et al. (2014) [27]

1.00 - 10.00

108 - 1013

Oks E and Brown I (2002) [28]

7.50 - 8.50

1010