Ambient Air and Hole Transport Layer Free Synthesis: Towards Low Cost CH₃NH₃PbI₃ Solar Cells

Table 1

Resistivity values of TiO₂-GO composites.

Sample	Resistivity (Ω·m)
0 wt% GO in TiO2	3.59 × 10^5
0.1 wt% GO in TiO2	2.76 × 10^5
0.2 wt% GO in TiO2	2.04 × 10^5
0.3 wt% GO in TiO2	7.87 × 10^4
0.4 wt% GO in TiO2	7.33 × 10^4
0.5 wt% GO in TiO2	3.62 × 10^4