In this study, Drake Beery and coworkers investigated an integrated Triplet Triplet Annihilation Up- Conversion, or TTAUC, Solar cell utilizing Cadmium Solenoid (CdSe) quantum dots as the triple sensitizer solar cell with a 1.5 times enhancement in the short circuit current for the TTAUC devices. Compared to the sum of the individual components, a quadratic to linear photocurrent dependence on the excitation rate was observed, supporting a TTA-UC photocurrent generation mechanism with an eighth value was on par with some of the lowest Ith values reported today, and below solar flux. Finally, less than unity energy transfer yields slow quantum dot regeneration by the redox, mediator and competitive quenching of the quantum dot excited state led to poor device performance.
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| The image was taken from https://doi.org/10.1021/acsaem.9b01765 |
The previous work done by the Hanson research group introduced this integrated TTAUC, solar cell using a self-assembled by layer architecture of sensitizer acceptor molecular die pairs on a metal oxide surface with the TTAUC mechanism. But possess some limitations including inherent energy losses. When inner system crossing from the singlet to the triple state production costs. Absorption limited to the UV visible range and a low extension coefficient all of which led to their interests and semiconductor quantum dots that had recently been shown to be effective.
For more details : https://doi.org/10.1021/acsaem.9b01765
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