# Cascaded F\"orster Resonance Energy Transfer and Role of the Relay Dye

## TL;DR

This study investigates how adding a relay dye in a three-dye system enhances energy transfer efficiency compared to a two-dye system, with experimental validation of key parameters.

## Contribution

It introduces a new cascaded donor-relay-acceptor system and quantifies the impact of relay dyes on transfer efficiency and related parameters.

## Key findings

- Relay dye increases energy transfer efficiency.
- Critical transfer distance is affected by relay dye presence.
- Experimental results confirm improved efficiency in the cascaded system.

## Abstract

The effect of introducing a relay dye on the energy transfer efficiency in a new donor-acceptor system has been studied. The values of the critical transfer distance, the reduced concentration, and the energy transfer efficiency of the cascaded system (consisting of three dyes- donor-relay dye-acceptor) are compared with that of the two dye system. Experimentally, it has been observed that the presence of a relay dye increases the transfer efficiency from the donor to the acceptor.

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Source: https://tomesphere.com/paper/1907.04622