Table 2. Charging of the SC by the OPV module under ambient lighting and subsequent SC self-discharge.
| Light source | Illuminance (lx) | Tlight (K) |
 (V) |
 (V) |
tch (min) |
 (min) |
 (h) |
|---|---|---|---|---|---|---|---|
| Ceiling lighting | 388 | 2924 | 1.05 | 0.92 | 171 | 56.0 | 3.57 |
| Desk lamp at 40 cm | 1585 | 2761 | 2.02 | 1.02 | 20.2 | 57.9 | 5.05 |
| Desk lamp at 20 cm | 5985 | 2713 | 3.10 | 1.00 | 4.18 | 35.4 | 5.54 |
In addition to the light illuminance and temperature levels for different ambient lighting conditions, the open circuit voltage (
) of the OPV module under the given lighting conditions, the voltage level to which the SC was charged (
), the charging times (tch) and the self-discharging times to 0.5 V (
) and 0.1 V 
are presented.