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Photon Induced Electron Transfer in Quantum Dot Solar Cell

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Figure

Fig. 1 Generalised Electron and Hole Orbital and Cell Movement in QDSSCs: (a) Photoexitation of the Light-Absorbing Material; (b) Electron/Hole Pair Photogeneration; (c) Movement of the Generated Hole from the HOMO of the Light-Absorbing Material to the VB of the Hole-Conducting Material via the Transfer of an Electron from the Latter to the Former; (d) Electron Flow from the Excited State of the Light-Absorbing Material to the CB of the Electron Conducting Material; (e) Electron Flow Through the Photoelectrode and the External Circuit, Re-entering Through the Counter Electrode; (f) Regeneration of the Hole-Conducting Material
Fig. 2 Diagrammatic representation of electronic band structure of 3.5 nm CdSe with bandgap of 2.17 eV and nanocrystalline TiO2:N  having bandgap of 3.2 eV, in association with TiO2 and a N dopant state of about 1.14 eV above the valence band
Fig. 5 Possible recombination pathway in QDSSC
Fig. 8 Hot carrier relaxation/cooling dynamics in semiconductor [106]

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