Engineering the interfaces of ITO@Cu2S nanowire arrays toward efficient and stable counter electrodes for quantum-dot-sensitized solar cells.

@article{Jiang2014EngineeringTI,
  title={Engineering the interfaces of ITO@Cu2S nanowire arrays toward efficient and stable counter electrodes for quantum-dot-sensitized solar cells.},
  author={Yan Jiang and X. Zhang and Qianqing Ge and Bin-Bin Yu and Yu-Gang Zou and Wen-Jie Jiang and Jin-Song Hu and Wei-Guo Song and L. Wan},
  journal={ACS applied materials \& interfaces},
  year={2014},
  volume={6 17},
  pages={
          15448-55
        }
}
Among the issues that restrict the power conversion efficiency (PCE) of quantum-dot-sensitized solar cells (QDSSCs), insufficient catalytic activity and stability of counter electrodes (CEs) are critical but challenging ones. The state-of-the-art Cu/Cu2S CEs still suffer from mechanical instability and uncertainty due to the reaction of copper and electrolyte. Herein, ITO@Cu2S core-shell nanowire arrays were developed to fabricate CEs for QDSSCs, which have no such issues in Cu/Cu2S CEs. These… Expand
Boosting the Open Circuit Voltage and Fill Factor of QDSSCs Using Hierarchically Assembled ITO@Cu2S Nanowire Array Counter Electrodes.
TLDR
H hierarchically assembled ITO@Cu2S nanowire arrays with conductive single-crystalline ITO cores and Cu2Snanocrystal shells were designed as efficient QDSSCs CEs, which exhibited an unprecedentedly high Voc and shunt resistance. Expand
Enhanced electrocatalytic activity and electrochemical stability of Cu2S/PbS counter electrode for quantum-dot-sensitized solar cells
Abstract A new strategy has been successfully developed for highly efficient copper sulfide/lead sulfide (Cu2S/PbS) counter electrodes (CEs) for quantum-dot-sensitized solar cells (QDSSCs). PbSExpand
One-step synthesis of solution processed time-dependent highly efficient and stable PbS counter electrodes for quantum dot-sensitized solar cells
The performance of quantum dot-sensitized solar cells (QDSSC) is restricted due to the insufficient electrocatalytic activity and stability of counter electrodes (CEs), which are critical butExpand
Self-supported metal sulphide nanocrystals-assembled nanosheets on carbon paper as efficient counter electrodes for quantum-dot-sensitized solar cells
Developing efficient counter electrodes (CEs) and quantum dots made of earth-abundant and non-toxic elements is essential but still challenging for quantum dot-sensitized solar cells (QDSSCs). Here,Expand
Copper Sulfide Catalyzed Porous Fluorine-Doped Tin Oxide Counter Electrode for Quantum Dot-Sensitized Solar Cells with High Fill Factor
The performance of quantum dot-sensitized solar cell (QDSSC) is mainly limited by chemical reactions at the interface of the counter electrode. Generally, the fill factor (FF) of QDSSCs is very lowExpand
Three-dimensional nanostructured electrodes for efficient quantum-dot-sensitized solar cells
Abstract Quantum dot sensitized solar cell (QDSSC) has been considered as a promising candidate for the low-cost third-generation photovoltaics due to the unique optoelectronic properties of quantumExpand
Synthesis of copper sulfide/reduced graphene oxide nanocomposites for use as the counter electrodes of high-performance CdS-sensitized solar cells
Abstract Copper sulfide (CuxS)/reduced graphene oxide (RGO) nanocomposites were prepared by a one-pot hydrothermal method with various contents of GO in the initial precursor. The nanocomposites wereExpand
Recent progress in quantum dot-sensitized solar cells employing metal chalcogenides
As one of the most promising third-generation photovoltaics devices, quantum dot-sensitized solar cells (QDSCs) have attracted increasing attention due to their easy fabrication, low cost, potentialExpand
Phase Transformations of Copper Sulfide Nanocrystals: Towards Highly Efficient Quantum-Dot-Sensitized Solar Cells.
Owing to their high electrical conductivity, tunable plasmonic absorption spectra, low cost, and abundance in nature, Cu2-x S nanocrystals are of great interest as functional materials forExpand
Metal chalcogenides as counter electrode materials in quantum dot sensitized solar cells: a perspective
The quantum dot sensitized solar cell (QDSSC), which has an analogous structure and working principle to the dye sensitized solar cell, has drawn much attention due to its characteristic advantagesExpand
...
1
2
...

References

SHOWING 1-10 OF 45 REFERENCES
ITO@Cu2S tunnel junction nanowire arrays as efficient counter electrode for quantum-dot-sensitized solar cells.
TLDR
The high-quality tunnel junctions formed between n-type ITO nanowires and p-type Cu2S nanocrystals led to the considerable decrease in sheet resistance and charge transfer resistance and thus facilitated the electron transport during the operation of QDSSCs. Expand
Cu2S Reduced Graphene Oxide Composite for High-Efficiency Quantum Dot Solar Cells. Overcoming the Redox Limitations of S2-/Sn2- at the Counter Electrode.
TLDR
Reduced graphene oxide (RGO)-Cu2S composite has now succeeded in shuttling electrons through the RGO sheets and polysulfide-active Cu2S more efficiently than Pt electrode, improving the fill factor by ∼75%. Expand
Graphene/PbS as a Novel Counter Electrode for Quantum Dot Sensitized Solar Cells
PbS nanoparticles were in situ deposited on graphene sheets by a successive ionic liquid adsorption and reaction method to prepare a graphene/PbS composite counter electrode for CdS/CdSe quantum dotExpand
Electroplating Cuprous Sulfide Counter Electrode for High-Efficiency Long-Term Stability Quantum Dot Sensitized Solar Cells
Currently, Cu2S based on brass foil is the most commonly used counter electrode (CE) in high efficiency quantum dot sensitized solar cells (QDSCs) because of its superior catalytic activity to theExpand
Quantum dot sensitized solar cells
Metal sulfide (CdS or PbS) quantum dots were synthesized in nanoporous TiO2 films for applications in solar energy conversion devices. Several electrolytes were investigated for the functioning redoxExpand
Low-cost porous Cu2ZnSnSe4 film remarkably superior to noble Pt as counter electrode in quantum dot-sensitized solar cell system
Abstract Lost-cost counter electrodes (CEs) based on Cu 2 ZnSnS(Se) 4 nanoparticles have been successfully introduced to quantum dot-sensitized solar cells (QDSCs). The investigation has demonstratedExpand
Composite counter electrode based on nanoparticulate PbS and carbon black: towards quantum dot-sensitized solar cells with both high efficiency and stability.
TLDR
The optimized PbS/CB composite CE shows a charge transfer resistance (R(CT)) as low as 10.28 Ω cm², which is an order of magnitude lower than the value obtained in the previous study on pure Pb S CE. Expand
Core/shell colloidal quantum dot exciplex states for the development of highly efficient quantum-dot-sensitized solar cells.
TLDR
This work reports on using a CdTe/CdSe type-II core/shell QD sensitizer with an absorption range extending into the infrared region because of its exciplex state, which is covalently linked to TiO2 mesoporous electrodes by dropping a bifunctional linker molecule mercaptopropionic acid (MPA)-capped QD aqueous solution onto the film electrode. Expand
Highly efficient CdS/CdSe-sensitized solar cells controlled by the structural properties of compact porous TiO2 photoelectrodes.
TLDR
Quantitative analyses of light-harvesting efficiency (LHE) and electron-transfer yield (Φ(ET)) for the QDSCs are investigated for the first time and it is revealed that the LHE increases in the long wavelength region with the addition of large size TiO(2) particles to the transparent film. Expand
Boosting the efficiency of quantum dot sensitized solar cells through modulation of interfacial charge transfer.
  • P. Kamat
  • Materials Science, Medicine
  • Accounts of chemical research
  • 2012
TLDR
The power conversion efficiency for liquid junction and solid state quantum dot solar cells, which is in the range of 5-6%, represents a significant advance toward effective utilization of nanomaterials for solar cells. Expand
...
1
2
3
4
5
...