FLEXIBLE AND WEARABLE INTEGRATED DEVICES FOR ENERGY HARVESTING AND STORAGE, EMPLOYING ADVANCED SOLAR CELLS (dye sensitized and perovskites) AND SUPERCAPACITORS

Flexible devices have demonstrated great potential in a wide range of applications including wearable devices for fitness and health care. Flexible plastic substrates, such as polyimide, or transparent conductive polyester are used to fabricate flexible devices that increase the comfort when they are worn by users or patients. Flexible fiber solar cells are wire-shaped solar cells which are a type of photovoltaic cells fabricated on wire-like substrates. These type devices, including inorganic, organic, dye-sensitized and perovskite solar cells have made great progress in the recent years. In the case of flexible dye-sensitized solar cells the energy conversion efficiency of has increased from 0.5% to 9%. Wearable devices are electronic products that are applied for worn on the human body sensing , artificial skins, wearable communication , monitor the health of patients and entertainment. They are controlled by electronic components and software. Nowadays, a variety of wearable devices, such as 5 smart glasses and smartwatches, have been invented. The demand of these electronics have been growing steadily. These wearable devices need wearable energy for their operating system. The parts of wearable devices like the electrodes and other internal parts made mechanically strong, flexible, lightweight, and comfortable to the user.