The researchers at Oak Ridge National Laboratory's developing a technology aimed at improving the mechanisms of photovoltaics using solar cells based 3-D nanocone to increase up to 80 percent conversion efficiency of light-to-power.
June Xu, team leader, said that a nanocone-based solar cell method used to synthesize the cells and improved charge collection efficiency to overcome the problem of the entrapment that reduce the efficiency of solar cells. The working principle of technology is to overcome the problem of poor transport of charges generated by solar photons. The 3-dimensional structure gives the distribution of intrinsic electric field which refers to efficient charge transport and high conversion efficiency.
A nanocone form able to generate a high electric field in the vicinity of the tip junction, effectively separating, injecting and collecting minority carriers, resulting in a higher efficiency than that of a conventional planar cell made with the same materials.
New solar cell with an efficient transportation costs will be able to tolerate the damaged materials and reduce the cost of generation of solar cell fabrication. In the laboratory, the researchers managed to achieve a 3.2 percent conversion efficiency of light-to-power compared with conversion efficiency of 1.8 percent of the conventional planar structure of the same material.
No comments:
Post a Comment