Realization of an in-situ Fluorescence & Raman Spectroscopy Setup for studying Quantum Dot Films
DOI:
https://doi.org/10.25609/sure.v4.2834Keywords:
Quantum Dots, Fluorescence Spectroscopy, Raman Spectroscopy, Electrochemistry, Charge TransferAbstract
A new experimental setup for studying charge transfer in Quantum Dot (QD) films has been designed, built and tested. The setup combines three spectroscopic methods; Raman, Fluorescence and Absorption Spectroscopy. First data on a Cadmium Selenide (CdSe) films reveals that radiative emission quenches while charging, attributed to Auger-decay. When fully discharged, the emission remains partly quenched, indicating that not all electrons are removed. Since charge transfer is a fundamental process in solar cells, the setup could be essential for designing and optimizing cost efficient future QD based solar cells.
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