Highly Conductive PEDOT:PSS Transparent Hole Transporting Layer with Solvent Treatment for High Performance Silicon/Organic Hybrid Solar Cells

Table 2 Physical properties of solvents used for film treatments

Chemical	Boiling pt./°C	Dielectric constant	Absolute viscosity	Polarity (water = 100)
IPA	82	18.3	2.0	54.6
Ethanol	78	22.2	1.08	65.4
Methanol	64	32.6	0.6	76.2