Even our best solar panels don't put out nearly enough power in that small a space to make a dent in our energy needs.
You would wind up walking around wearing a Solar Tower, a steam turbine generator, and an array of focusing mirrors, and still not come close to the energy output your body manages via its myriad metabolic processes.
Wow I never thought non plant organisms could perform photosynthesis? Turns out there are three other animals that can do it besides the aforementioned slug, to various degrees: Spotted Salamander - Ambystoma maculatum, Pea Aphid - Acyrthosiphon pisum and the Oriental Hornet - Vespa orientalis. https://www.google.com/amp/umich.ul...php/77109/4-incredible-photosynthetic-animals