Special Effect of Urea as a Stabilizer in Thermal Immersion Method to Synthesis Porous Zinc Oxide Nanostructures

Table 2

Sensitivity of ZnO nanostructures prepared at different ratio concentration of N₂ gas by I-V characteristics of testing.

Samples	Turn-on volatge, 𝑉O		Response, 𝑆
	Before exposed, 𝑉𝑏	After exposed, 𝑉𝑎	𝑆=((𝑉𝑏−𝑉𝑎)/𝑉𝑏)×100%
ZnO 0.02 M : Urea 0.01 M	3.27 V	1.77 V	45.87
ZnO 0.01 M : Urea 0.04 M	2.79 V	1.19 V	57.35
ZnO 0.01 M : Urea 0.06 M	1.58 V	0.53 V	66.46
ZnO 0.01 M : Urea 0.08 M	1.42 V	0.21 V	85.21