A team of students at Cambridge working with IEEE Fellow Arokia Nathan are working on a way to reclaim light that is lost from OLED displays. Only 30% of light in a typical smartphone or other small handheld device is project forward towards you. The rest scatters off to the side. Nathan and his team have created a prototype that can actually reclaim the lost light and turn it back into energy that the screen can run off of. The device involves solar cells in thin-film hydrogenated amorphous silicon. Ideally, this will cut back on the amount you would need to charge your device, making it more efficient in the long run. At the moment, the team is not looking at a “never charge again” capacity for their invention, but agree that it would certainly cut back on the amount of charges you’ll need for your phone.