Improvement in the Power Conversion Efficiency of Bulk Heterojunction Photovoltaic Device via Thermal Postannealing of Subphthalocyanine:C₇₀ Active Layer

Table 1

The photovoltaic performance under AM 1.5 G solar illumination and the respective hole and electron mobilities estimated from SCLC.

Device	𝑉OC (V)	𝐽SC (mA/cm^2)	FF (%)	PCE (%)	𝜇ℎ (cm^2/Vs)	𝜇𝑒 (cm^2/Vs)
As deposited	1.00	8.8	52	4.6	5.1×10^−8	1.1×10^−4
50°C	0.99	11.5	45	5.1	4.2×10^−7	2.2×10^−4
80°C	0.99	12.7	44	5.5	3.4×10^−6	3.9×10^−4
110°C	0.98	11.0	44	4.7	—	—
140°C	0.92	10.7	42	4.1	2.0×10^−8	7.9×10^−4