New design to make solar cells more efficient

Science and technology journal, New York, aug 21 (Reuters) - Reporter wei-dong feng) American researchers recently published in nature & middot; Chemical journal reported that they developed a use of singlet fission to new ways to improve the efficiency of solar cells.

all modern working principle of solar panels are the same, that is a photon produce an exciton, then exciton converted into current. Some molecules can be realized in solar cells from a single photon produce two excitons, a process called singlet fission. However, the use of the molecule is one of the biggest challenges, two exciton survival time is very short, Dozens of nanoseconds) As a kind of power, make it difficult to capture.

in the office of naval research funding, Columbia University research team by new design rules, developed by far the most effective and most useful technical intramolecular singlet fissile material. New design of organic molecules can be rapidly developed two kinds of excitons, the two kinds of excitons than is currently the most advanced technology of exciton longer life, which will enable each photon produce electrical energy can be absorbed by the solar cell.

, the researchers said the new research to fundamentally understand the exciton how to deal with a single molecule, and understand how they are effectively applied to the affected by light amplification signal equipment opened the door. The results of the study not only can be used for the next generation of solar energy equipment production, also can promote the chemistry, sensor and imaging of photocatalytic process, used to produce medicine chemicals, plastics, and many other types of consumption.

solar is gift of the stars, so for years, scientists have been to maximise solar cell conversion efficiency and stressed. Now, new technology make each photon produce electrical energy can be absorbed by the solar cell, it is not only accumulated more power for the next generation of solar energy equipment, its contain commercial value, and the more significant significance to relieve the energy crisis. We have every reason to believe that the results will be in the future solar batteries & other; Go a long way & throughout; 。