Skip to main content
. 2017 Jun 16;3(6):e1602051. doi: 10.1126/sciadv.1602051

Fig. 4. Integrated energy-harvesting and storage system.

Fig. 4

(A) Structure of organic photovoltaic module. (B and C) Current-voltage characteristics of four-cell OPV module under various indoor lighting conditions (B) and sunlight (C). (D) Images of photovoltaic module and wire battery integrated into a wearable bracelet. (E and F) Voltage and current during battery charging. OPV module is exposed to either CFL lighting with illuminance of 3000 lux (E) or sunlight (F). (G and H) Voltage, current, and cumulative stored charge of solar battery charging during a simulated day of use. Yellow shaded areas indicate periods of exposure to sunlight. White areas correspond to CFL lighting with illuminance of 300 (G) or 3000 lux (H).