Characterization of Organic Thin Film Solar Cells of PCDTBT : PC₇₁BM Prepared by Different Mixing Ratio and Effect of Hole Transport Layer

Table 2

Surface roughness parameters obtained from AFM analysis for different thickness of PEDOT : PSS layer.

PEDOT : PSS layer (thickness)	P-V (nm)	RMS (nm)
5000 rpm (~45 nm)	15	1.34
3000 rpm (~62 nm)	21	1.45
2000 rpm (~92 nm)	35	1.57