Table 3. Shift of CB (E_CBM/eV), the Recombination Resistance (R₀/Ω cm²), and Open-Circuit Photovoltage (V_oc/mV).

dye	ECBM	R0	Voc
DP1-D0	–3.075	1.13 × 103	0.74
DP1-D1	–3.081	8.15 × 102	0.69
DP1-D2	–3.090	9.68 × 102	0.70
DP1-D3	–3.100	1.17 × 103	0.68
DP2-D0	–3.096	1.18 × 103	0.71
DP2-D1	–3.099	1.72 × 103	0.73
DP2-D2	–3.099	1.10 × 103	0.72
DP2-D3	–3.111	7.13 × 103	0.69