Efficient CdS/CdSe/ZnS quantum dot sensitized solar cells prepared by ZnS treatment from methanol solvent

Samadpour, Mahmoud

doi:10.1016/j.solener.2016.12.057

Cited by 47 publications

(16 citation statements)

References 42 publications

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“…This process has been successfully utilized to synthesize CdS and CdSe onto TiO 2 films through 4 cycles of immersion into ZnS methanolic precursors, achieving a 4.23% efficiency. [63] SILAR has been proved as a successful synthesis strategy for Cd-based nanomaterials. This Table 1.…”

Section: Successive Ionic Layer Adsorption and Reactionmentioning

confidence: 99%

Cadmium Selenide Quantum Dots for Solar Cell Applications: A Review

Rahman

Karim

Alharbi

et al. 2021

Chemistry An Asian Journal

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Quantum dot-sensitized solar cells (QDSSCs) are significant energy-producing devices due to their remarkable capability to growing sunshine and produce many electrons/ holes pairs, easy manufacturing, and low cost. However, their power conversion efficiency (4%) is usually worse than that of dye-sensitized solar cells (� 12%); this is mainly due to their narrow absorption areas and the charge recombination happening at the quantum dot/electrolyte and TiO 2 /electrolyte interfaces. Thus, to raise the power conversion efficiency of QDSSC, new counter electrodes, working electrodes, sensitizers, and electrolytes are required. CdSe thin films have shown great potential for use in photodetectors, solar cells, biosensors, light-emitting diodes, and biomedical imaging systems. This article reviews the CdSe nanomaterials that have been recently used in QDSSCs as sensitizers. Their size, design, morphology, and density all noticeably influence the electron injection efficiency and light-harvesting capacity of these devices. A detailed overview of the development of QDSSCs is presented, including their basic principles, the synthesis methods for their CdSe quantum dots, and the device fabrication processes. Finally, the challenges and opportunities of realizing high-performance CdSe QDSSCs are discussed and some future directions are suggested.

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Section: Successive Ionic Layer Adsorption and Reactionmentioning

confidence: 99%

Cadmium Selenide Quantum Dots for Solar Cell Applications: A Review

Rahman

Karim

Alharbi

et al. 2021

Chemistry An Asian Journal

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“…Also, compared with CdS/CdSe system, ZnS has more negative conductive band edge (E cb ) which prevent the electron transfer to electrolyte [88]. Compared with aqueous solution, when ZnS is deposited in alcoholic solution (here methanol), improvement in the efficiency is observed due to the more diffusion of Zn 2+ ion into the mesoporous TiO 2 electrode [223]. Counter electrode also playing important role in the transport of hole from redox electrolyte.…”

Section: Role Of Zns Layer In Co-sensitization Of Qdsmentioning

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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“…Due to their quantum confinement effect that appears when the semiconductor materials' size is smaller than twice its Bohr radius, QDs process excitonic features and enhanced photoluminescence (PL) properties comparing to bulk materials [24][25][26]. Various types of QDs such as CdS [27], CdSe [13,15,28], ZnS [29], PbS [30], PbSe [31], SnS [32,33], SnSe [34] silicon [35] and halide perovskites have been explored and applied in various applications.…”

Section: Introductionmentioning

confidence: 99%