3D Solar Cell with Improved Efficiency By 80 Percent

Men of science at the United States of America section of Energy’s Oak Ridge National Laboratory have produced a 3D photovoltaic cell which could rise PV light-to-energy conversion rates by 80%.

Generally, when sunlight hits the surface of a solar board and is assimilated by solar cells, a few of the charge produced by solar photons gets pinned by natural faults in the bulk materials that comprise the strata of the PV cell, consequent in a deprivation of final electricity output.

The scientists focused on optimising this energy.

"To solve the entrapment problems that reduce solar cell efficiency, we created a nanocone-based solar cell, invented methods to synthesize these cells and demonstrated improved charge collection efficiency," Xu said.

Oak Ridge’s 3D solar cell applies zinc-oxide n-type nanocenes to suffice a model for channeling electrons. A p-type ground substance of crystalline Cd telluride functions as the main photon absorber medium.

With these new addons to the original design, they manage to demonstrate an amazing conversion efficiency rate from 1.8 to 3.2.

"We designed the three-dimensional structure to provide an intrinsic electric field distribution that promotes efficient charge transport and high efficiency in converting energy from sunlight into electricity," Xu said.

The same team of scientists are also doing work on a hybrid photovoltaic cell that reins the light-harvesting powers of photosynthetic bacteria.