Two-step annealed CdS/CdSe co-sensitizers for quantum dot-sensitized solar cells

Jung, Sung Won; Park, Min-A; Kim, Jae Hong; Kim, Hyunsoo; Choi, Chel‐Jong; Kang, Soon Hyung; Ahn, Kwang‐Soon

doi:10.1016/j.cap.2013.05.015

Cited by 9 publications

(2 citation statements)

References 22 publications

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“…R 3 and C 3 , whose value can be estimated using the semicircle at the medium frequencies, are used to represent the charge transfer impedance at the QD/electrolyte/ZnO triple junction. All the recombination events between the electrons and holes in the ZnO photoanode, the electrolyte, and the QDs, which hindered the electron transfer from the QDs to the FTO substrate through the ZnO photoanode, contributed to R 3 [ 30 , 83 , 84 ].…”

Section: Resultsmentioning

confidence: 99%

ZnO Hierarchical Nanostructure Photoanode in a CdS Quantum Dot-Sensitized Solar Cell

et al. 2015

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A hierarchical array of ZnO nanocones covered with ZnO nanospikes was hydrothermally fabricated and employed as the photoanode in a CdS quantum dot-sensitized solar cell (QDSSC). This QDSSC outperformed the QDSSC based on a simple ZnO nanocone photoanode in all the four principal photovoltaic parameters. Using the hierarchical photoanode dramatically increased the short circuit current density and also slightly raised the open circuit voltage and the fill factor. As a result, the conversion efficiency of the QDSSC based on the hierarchical photoanode was more than twice that of the QDSSC based on the simple ZnO nanocone photoanode. This improvement is attributable to both the enlarged specific area of the photoanode and the reduction in the recombination of the photoexcited electrons.

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Section: Resultsmentioning

confidence: 99%

ZnO Hierarchical Nanostructure Photoanode in a CdS Quantum Dot-Sensitized Solar Cell

et al. 2015

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“…This distribution of nanoparticles is dependent on deposition method and the essential condition includes intimate contact between the nanoparticles, avoiding aggregation on the surface etc. Important parameters affect the performance of cosensitization of QDSSCs are thickness of the deposited layer, type of mesoporous layer and annealing [109] etc. Also, recombination control is extremely essential in order to achieve efficient charge transfer process and also for high efficiency.…”

Section: Importance Of Co-sensitization By Qds and Structural Configumentioning

confidence: 99%

Role of co-sensitization in dye-sensitized and quantum dot-sensitized solar cells

et al. 2019

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Novel materials for third generation solar cells have emerged as one of the major scientific contribution in alternative energy approaches. In this scenario, semiconductor nanomaterials and organic dye molecules have greatly acknowledged for their vast contribution to the solar energy applications. Research on semiconductor nanomaterials for fabricating future generation solar cells is still fascinating due to their extraordinary structural and optical properties. Moreover, functionalization of organic dye molecules helps to harvest large amount of photons in order to apply them for high efficiency solar cell devices. Various attempts have been made to improve efficiency of quantum dot-sensitized solar cells and dye-sensitized solar cells using semiconductor inorganic nanomaterials and organic/organometallic dye molecules. Out of these, co-sensitization has been looking as most promising approach to improve the efficiency considerably. A record of over 14% of efficiency has been achieved in recent years through co-sensitization strategy. The energy transfer process during co-sensitization is also a very crucial and interesting. This review deals about materials, methods, various approaches and role of co-sensitization in enhancing the efficiency of dye-sensitized and quantum dot sensitized solar cells. The critical issues existing in the co-sensitization approach are also elaborately discussed.

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The performance of CdS quantum dot sensitized ZnO nanorod-based solar cell

Pandi¹,

Muthukumarasamy²,

Agilan³

et al. 2016

J Sol-Gel Sci Technol

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Two-step annealed CdS/CdSe co-sensitizers for quantum dot-sensitized solar cells

Cited by 9 publications

References 22 publications

ZnO Hierarchical Nanostructure Photoanode in a CdS Quantum Dot-Sensitized Solar Cell

ZnO Hierarchical Nanostructure Photoanode in a CdS Quantum Dot-Sensitized Solar Cell

Role of co-sensitization in dye-sensitized and quantum dot-sensitized solar cells

The performance of CdS quantum dot sensitized ZnO nanorod-based solar cell

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