Cu2AgInSe4 QDs sensitized electrospun porous TiO2 nanofibers as an efficient photoanode for quantum dot sensitized solar cells

Porous TiO2 nanofibers (PTFs) and dense TiO2 nanofibers (DTFs) were prepared using simple electrospinning for application in dye-sensitized solar cells (DSSCs). TiO2 nanoparticles (TNPs) were prepared using a hydrothermal reaction. The as-prepared PTFs and DTFs (with a fiber diameter of around 200 nm) were mixed with TNPs such as TNP-PTF and TNP-DTF nanocomposites used in photoelectrode materials or were coated as light scattering layers on the photoelectrodes to improve the charge transfer ability and light harvesting effect of the DSSCs. The as-prepared TNPs showed a pure anatase phase, while the PTFs and DTFs showed both the anatase and rutile phases. The TNP-PTF composite (TNP:PTF = 9:1 wt.%) exhibited an enhanced short circuit photocurrent density (Jsc) of 14.95 ± 1.03 mA cm−2 and a photoelectric conversion efficiency (PCE, η) of 5.4 ± 0.17% because of the improved charge transport and accessibility for the electrolyte ions. In addition, the TNP/PTF photoelectrode showed excellent light absorption in the visible region because of the mountainous nature of light induced by the PTF light scattering layer. The TNP/PTF photoelectrode showed the highest Jsc (16.96 ± 0.79 mA cm−2), η (5.9 ± 0.13%), and open circuit voltage (Voc, 0.66 ± 0.02 V).

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Control of the interfacial charge transfer resistance to improve the performance of quantum dot sensitized solar cells with highly electrocatalytic Cu-doped SnS counter electrodes

Applied Surface Science ◽

10.1016/j.apsusc.2020.145297 ◽

2020 ◽

Vol 508 ◽

pp. 145297

Author(s):

Mohammed Panthakkal Abdul Muthalif ◽

Youngson Choe

Keyword(s):

Solar Cells ◽

Charge Transfer ◽

Quantum Dot ◽

Charge Transfer Resistance ◽

Counter Electrodes ◽

Transfer Resistance ◽

Interfacial Charge Transfer ◽

Sensitized Solar Cells ◽

Interfacial Charge

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Perovskite-like ceramic hole transport material for quantum dot sensitized solar cells

Solar Energy ◽

10.1016/j.solener.2021.06.017 ◽

2021 ◽

Vol 224 ◽

pp. 355-360

Author(s):

S. Akhil ◽

J. Kusuma ◽

S. Akash ◽

R. Geetha Balakrishna

Keyword(s):

Solar Cells ◽

Quantum Dot ◽

Hole Transport ◽

Sensitized Solar Cells

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Quantum Dot Sensitized Solar Cell: Photoanodes, Counter Electrodes, and Electrolytes

Molecules ◽

10.3390/molecules26092638 ◽

2021 ◽

Vol 26 (9) ◽

pp. 2638

Author(s):

Nguyen Thi Kim Chung ◽

Phat Tan Nguyen ◽

Ha Thanh Tung ◽

Dang Huu Phuc

Keyword(s):

Solar Cells ◽

Solar Cell ◽

Quantum Dot ◽

Photon Absorption ◽

Dye Molecules ◽

Charge Generation ◽

Counter Electrodes ◽

Advantages And Disadvantages ◽

Efficiency Performance ◽

Sensitized Solar Cells

In this study, we provide the reader with an overview of quantum dot application in solar cells to replace dye molecules, where the quantum dots play a key role in photon absorption and excited charge generation in the device. The brief shows the types of quantum dot sensitized solar cells and presents the obtained results of them for each type of cell, and provides the advantages and disadvantages. Lastly, methods are proposed to improve the efficiency performance in the next researching.

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