P-Type dye-sensitized solar cells: Enhanced performance with a NiO compact blocking layer

Ho, Phuong; Bao, Le Quoc; Ahn, Kwang–Soon; Cheruku, Rajesh; Kim, Jae Hong

doi:10.1016/j.synthmet.2016.04.006

Cited by 36 publications

(18 citation statements)

References 40 publications

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“…Dye-sensitized solar cells (DSSCs) have also gained common interest in the past years due to their low manufacturing expenditures, easiness of fabrication, and tunable optical features, for instance colour and transparency. Nanostructured metal oxide materials, like ZnO, NiO, TiO 2 , SnO 2 , and so forth, are used to fabricate DSSCs [12][13][14][15][16]. There are many ways of producing nanostructure materials [17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterisation of ZnO/NiO Nanocomposite Particles for Solar Cell Applications

Kerli

Alver

2016

Journal of Nanotechnology

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The mixture of ZnO and NiO effect on solar cell has been investigated. ZnO and NiO particles were produced by hydrothermal method and the produced particles were annealed at 500°C for 1 hour. Crystal structure and morphological properties of particles were examined by X-ray diffraction (XRD) and scanning electron microscope (SEM). XRD measurements showed that ZnO particles have a hexagonal wurtzite structure and NiO particles have a cubic structure. SEM results show that both ZnO and NiO particles are the form of nanoparticles. Dye-sensitized solar cells were fabricated by N-719 (Ruthenium) dyes and mixing ZnO/NiO particles in different ratios, 100/0, 50/50, and 0/100. It was observed that the solar cells made with ZnO have the highest performance with the efficiency of 0.542%. In addition, it was observed that when amount of NiO ratio increases in the mixture of ZnO/NiO, the efficiencies of DSSCs were observed to decrease.

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Section: Introductionmentioning

confidence: 99%

Preparation and Characterisation of ZnO/NiO Nanocomposite Particles for Solar Cell Applications

Kerli

Alver

2016

Journal of Nanotechnology

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“…The Z 1 semicircle can be assigned to charge transfer processes within Pt/electrolyte and FTO/meso‐TiO 2 interfaces while Z 2 can be ascribed to the meso‐TiO 2 /dye/electrolyte interface. Z 1 and Z 2 are both represented by an equivalent circuit with a resistance (R) and a constant phase element (CPE) in parallel, Figure B …”

Section: Resultsmentioning

confidence: 99%

New LbL‐TiO₂/ZnO Compact Films to Improve Performance of Dye‐Sensitized Solar Cells

2019

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The preparation of nanostructured thin films consisted of TiO 2 / ZnO bilayers (BL) and their application in dye-sensitized solar cells (DSCs) are reported. The film was prepared by the Layerby-Layer (LbL) technique using, respectively, acid and basic sols of TiO 2 and ZnO nanoparticles. The particles in the sols were characterized by dynamic light scattering (DLS) and the compact morphology of the LbL films were probed by scanning electronic (SEM) and atomic force (AFM) microscopies. The photoelectrochemical parameters of DSCs with 0, 15 and 20 BL were assessed by current-voltage (JxV) curves, incident photon-to-current efficiency (IPCE), electron lifetime and electrochemical impedance spectroscopy (EIS). These results revealed a significant improvement (up to 67%) on the DSC conversion efficiency promoted by LbL film underlayers, with enhancements ascribed to an efficient blocking effect preventing the FTO/I 3 À charge recombination and improved contact between the mesoporous-TiO 2 and the conducting substrate (FTO).

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“…[13,57] Briefly, the electrode consists of FTO glass on which a compact layer of NiO was first deposited to ensure a stronger binding of the nanoparticles of NiO and to prevent the interfacial charge recombination with the redox shuttle in the electrolyte. [47,58] A layer of nanoparticles of NiO was deposited by screen printing and then sintered at 400°C. The mesoporous film was finally soaked in a solution of nickel acetate, and then annealed at 200°C.…”

Section: Preparation Of the Hybrid System: Nio/mpa/pbs/py-ndimentioning

confidence: 99%

Improved efficiency of PbS quantum dot sensitized NiO photocathodes with naphthalene diimide electron acceptor bound to the surface of the nanocrystals

Raïssi¹,

Sajjad²,

Farré³

et al. 2018

Solar Energy Materials and Solar Cells

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Hybrid materials combining a wide bandgap metal oxide semiconductor, metal chalcogenide nanocrystals and molecular systems represent very attractive materials for fabricating devices with new function or improved photoelectrochemical performances. This study deals with sensitization of NiO, which is a p-type semiconductor, by quantum dots (QDs) of PbS with an average diameter of 3 nm. The PbS QDs were attached to the monocrystalline film of NiO by mercaptopropionic acid linker and were subsequently capped with methyl-pyridine naphthalene diimide (NDI) units to prepare quantum dot sensitized solar cells (p-QDSSCs) on NiO electrodes. Time-resolved photoluminescence measurements of the PbS emission were used to determine the rate constants for charge transfer from the PbS exciton to the NiO, cobalt based redox mediator and NDI. Notably, it was shown that NDI quenches the PbS exciton by electron transfer with a quite fast rate constant (6.9 x 10 7 s -1 ). The PbS QDs sensitized NiO films were finally used to fabricate solar cells with tris(4,4'-ditert-butyl-2,2'bipyridine) cobalt(III/II) as redox mediator. It was observed that the presence of NDI on PbS improved the photovoltaic performance by 50% relative to that of cells without NDI, leading to a device with the following characteristics: Jsc = 5.75 mA/cm 2 , Voc = 226 mV, ff = 34% and PCE = 0.44%. This study demonstrates that photogalvanic processes can be a productive pathway to better performing sensitized p-type semiconductor for p-QDSSC. In other words, photoinduced electron transfer from the QDs

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P-Type dye-sensitized solar cells: Enhanced performance with a NiO compact blocking layer

Cited by 36 publications

References 40 publications

Preparation and Characterisation of ZnO/NiO Nanocomposite Particles for Solar Cell Applications

Preparation and Characterisation of ZnO/NiO Nanocomposite Particles for Solar Cell Applications

New LbL‐TiO₂/ZnO Compact Films to Improve Performance of Dye‐Sensitized Solar Cells

Improved efficiency of PbS quantum dot sensitized NiO photocathodes with naphthalene diimide electron acceptor bound to the surface of the nanocrystals

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P-Type dye-sensitized solar cells: Enhanced performance with a NiO compact blocking layer

Cited by 36 publications

References 40 publications

Preparation and Characterisation of ZnO/NiO Nanocomposite Particles for Solar Cell Applications

Preparation and Characterisation of ZnO/NiO Nanocomposite Particles for Solar Cell Applications

New LbL‐TiO2/ZnO Compact Films to Improve Performance of Dye‐Sensitized Solar Cells

Improved efficiency of PbS quantum dot sensitized NiO photocathodes with naphthalene diimide electron acceptor bound to the surface of the nanocrystals

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New LbL‐TiO₂/ZnO Compact Films to Improve Performance of Dye‐Sensitized Solar Cells