South Korean researchers during a Gwangju Institute of Science and Technology (GIST) have grown a new ultra-thin bendable solar dungeon that could be used to energy many opposite forms of energy-efficient consumer electronics.
The new cell, announced yesterday in a scholarship biography Applied Physics Letters, is approximately one micrometre thick and stretchable adequate to hang around an normal pencil. The breakthrough was achieved by utilizing a special technique that requires fewer materials than unchanging photovoltaics, that means a dungeon has reduction element during a farthest ends of a executive plane, creation it easier to bend.
Made from a semiconducting element called gallium arsenide, a cells were hammered directly onto a stretchable substrate though regulating an adhesive, that would’ve combined to a thickness.
The cells were afterwards “cold welded” to a electrode on a substrate by requesting vigour during a heat of 170 degrees Celsius and melting a proxy glue called photoresist on a top, that was after peeled away, withdrawal a approach metal-to-metal bond.
Subsequent tests showed a new dungeon is allied to other, thicker photovoltaics in terms of efficiency, and practice usually a fourth of a aria as cells that are 3.5 times thicker. “The thinner cells are reduction frail underneath bending, though perform likewise or even somewhat better,” pronounced one of a developers Jongho Lee.
While solar cells of allied density have already been developed, many prior efforts used a artwork process to mislay a whole substrate, since a GIST-led group used send copy that enabled them to grasp impassioned coherence with fewer materials.
The authors explain their microcells are so skinny and stretchable they could be integrated into aptness trackers, intelligent eyeglasses and other kinds of next-generation wearable technology.
Sources: abstract, eurekalert.org, redorbit.com.