Solar cells sensitized with type-II ZnSe–CdS core/shell colloidal quantum dots

Abstract

Type-II quantum dots (QDs) were applied for QDs-sensitized solar cells for the first time and showed prominent absorbed photon to current conversion efficiency.

Controlling photoinduced electron transfer from PbS@CdS core@shell quantum dots to metal oxide nanostructured thin films

“…The size of PbS QDs can be modulated from 3.4 nm to 6 nm by adjusting the molar ratio of Pb/S, injection temperature and growth time. 12 For purication, ethanol was added, then the suspension was centrifuged and the supernatant was removed. The pure PbS QDs capped with OLA were then re-dispersed in OA-toluene (v/v 1/20).…”

Low-cost solution processed nano millet like structure CoS2 film superior to pt as counter electrode for quantum dot sensitized solar cells

“…[10] QDSSCs have tremendous advantages such as impressive sunlight harvesting, multiple electron/hole generation, ease of fabrication and low cost as a potential alternative for single or polycrystalline p-n junction silicon solar cells. [11][12][13][14] The QD sensitizer can be deposited on mesoporous metal oxide by chemical bath deposition, [15] proximal adsorption, [16] chemical linking of colloidal QDs, [17] electrodeposition, [18] epitaxial growth, [19] or successive ionic layer adsorption and reaction (SILAR) [20] to tune their optical bandgap through size control. Among these, the SILAR method has attracted Cobalt Sulfide (CoS2) counter electrodes (CE) with uniform size distribution were obtained on fluorine-doped tin oxide (FTO) substrate as counter electrodes for polysulfide redox electrolyte in CdS/CdSe/ ZnS quantum dot-sensitized solar cells (QDSSCs) by chemical bath deposition (CBD) technique.…”

Heterogeneous flammulina velutipes-like CdTe/TiO2 nanorod array: A promising composite nanostructure for solar cell application

“…Type-II core-shell structures with different band alignments, such as TiO 2 /ZnO, ZnO/Er 2 O 3 , ZnO/ZnS, V 2 O 5 /ZnO, ZnSe/CdS or ZnO/CdTe, have been reported [11][12][13][14][15][16]. Those core-shell structures show adding light emission or enhanced efficiency of solar cells.…”