Inhibiting radiative recombination rate to enhance quantum yields in a quantum photocell*

Abstract

Inhibiting the radiative radiation is an efficient approach to enhance quantum yields in a solar sell. This work carries out the inhibition of radiative recombination rate (RRR) in a quantum photocell with two coupled donors. We perform explicit calculations of the transition rates, energy gaps and the absorbed solar wavelength-dependent RRR, and find that two different regimes play the crucial roles in inhibiting RRR. One is the quantum coherence generated from two different transition channels, the other includes the absorbed photon wavelength and gaps between the donor and acceptor in this proposed photocell model. The results imply that there may be some efficient ways to enhance the photoelectron conversion compared to the classic solar cell.

Influence of the coupled-dipoles on photosynthetic performance in a photosynthetic quantum heat engine*

“…[12,13] People firmly believe that understanding its underlying mechanism involving photosynthesis can help us design novel artificial nanodevices for efficient quantum transport and some optimized solar cells. [14][15][16][17][18] Recently, some theoretical models [19][20][21] show that quantum mechanical behavior contributes to the high efficiency of biological processes.…”