Influence of Quantum Dot Concentration on Carrier Transport in ZnO:TiO(2) Nano-Hybrid Photoanodes for Quantum Dot-Sensitized Solar Cells

Zinc oxide nanowire and titanium dioxide nanoparticle (ZnO:TiO(2) NW/NP) hybrid films were utilized as the photoanode layer in quantum dot-sensitized solar cells (QDSSCs). CdSe quantum dots (QDs) with a ZnS passivation layer were deposited on the ZnO:TiO(2) NW/NP layer as a photosensitizer by succes...

Ausführliche Beschreibung

Bibliographische Detailangaben
Hauptverfasser: Maloney, Francis S., Poudyal, Uma, Chen, Weimin, Wang, Wenyong
Format: Online Artikel Text
Sprache:English
Veröffentlicht: MDPI 2016
Schlagworte:
Article
Online Zugang:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5245735/
https://www.ncbi.nlm.nih.gov/pubmed/28335319
http://dx.doi.org/10.3390/nano6110191
Beschreibung
Zusammenfassung:Zinc oxide nanowire and titanium dioxide nanoparticle (ZnO:TiO(2) NW/NP) hybrid films were utilized as the photoanode layer in quantum dot-sensitized solar cells (QDSSCs). CdSe quantum dots (QDs) with a ZnS passivation layer were deposited on the ZnO:TiO(2) NW/NP layer as a photosensitizer by successive ion layer adsorption and reaction (SILAR). Cells were fabricated using a solid-state polymer electrolyte and intensity-modulated photovoltage and photocurrent spectroscopy (IMVS/PS) was carried out to study the electron transport properties of the cell. Increasing the SILAR coating number enhanced the total charge collection efficiency of the cell. The electron transport time constant and diffusion length were found to decrease as more QD layers were added.

Ähnliche Einträge