Non-fullerene organic solar cell with selenium acceptor achieves 19% efficiency

Researchers in China have designed an organic solar cell the uses an acceptor based on selenium as an alternative to commonly utilized non-fullerene acceptors. The new acceptor enabled the cell to have reduced non-radiative recombination loss and improved dielectric constant. An international group of scientists has built an organic solar cell based on an acceptor based on selenium (Se) instead of commonly utilized non-fullerene acceptors (NFAs). The use of Se is intended to accelerate hole transfer and improve the dielectric constant, which purportedly results in higher power conversion efficiency. ...

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