The researchers, led by University of Cambridge, used ultrafast laser pulses to observe how a photon, can be converted into 2 energetically excited particles, known as spin-triplet excitons, through a process called singlet fission. If the process of singlet fission can be controlled, it could enable solar cells to double the amount of electrical current that can be extracted.
In conventional semiconductors such as silicon, when 1 photon is absorbed it leads to the formation of 1 free electron that can be harvested as electrical current. However certain materials undergo singlet fission instead, where the absorption of a photon leads to the formation of 2 spin-triplet excitons...
Read More
Recent Comments