Doping Efficiency in Cobalt-Doped ZnO Nanostructured Materials

Table 3

Bandgap shrinkage, doping concentration, and doping efficiency for cobalt nitrate- and cobalt chloride-doped ZnO nanostructures at 0.1 M and 1 M molarities.

Co %	Cobalt nitrate-doped ZnO						Cobalt chloride-doped ZnO
	0.1 M			1 M			0.1 M			1 M
	(eV)	(cm^−3)	(%)	(eV)	(cm^−3)	(%)	(eV)	(cm^−3)	(%)	(eV)	(cm^−3)	(%)
5	-0.04		5.01	-0.03		9.79	-0.04		12.51	-0.04		18.66
10	-0.10		10.71	-0.07		23.25	-0.10		36.54	-0.11		39.72
15	-0.16		13.88	-0.11		36.53	-0.14		52.13	-0.16		58.44
20	-0.20		14.76	-0.14		44.29	-0.20		64.98	-0.20		70.25