UV-Ozone Treatment on Cs₂CO₃ Interfacial Layer for the Improvement of Inverted Polymer Solar Cells

Table 1

The key parameters of fabricated inverted polymer solar cells.

Number	Times	𝐽sc (mA/cm^2)	𝑉oc (V)	𝑅sh (Ω·cm^2)	𝑅s (Ω·cm^2)	FF %	PCE %
1	0 min	4.0	0.58	266	88	33	0.76
2	5 min	4.5	0.51	215	85	31	0.71
3	10 min	5.0	0.49	239	69	32	0.78
4	15 min	5.4	0.48	345	47	39	1.01
5	20 min	3.7	0.39	136	95	27	0.39