Quantum dots for solar cell applications

Sakho, El Hadji Mamour; Oluwafemi, Oluwatobi S.

doi:10.1016/b978-0-12-813337-8.00011-4

Cited by 6 publications

(5 citation statements)

References 194 publications

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“…[129] The adjustable energy gap of QDs allows its application in many fields, including solar cells, and recently, it has emerged as a DC material in OSCs. [130] Aoki et al applied a layer of cadmium sulfide (CdS) QDs encapsulated in zinc sulfide (CdS/ZnS), and it acts as DC material. [121] The calculated value of PLQY was 38%, which describes how efficiently QDs convert an excitation light into fluorescence.…”

Section: Quantum Dotsmentioning

confidence: 99%

Down‐conversion materials for organic solar cells: Progress, challenges, and perspectives

et al. 2022

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Organic solar cells (OSCs) in terms of power conversion efficiency (PCE) and operational lifetime have made remarkable progress during the last decade by improving the active layer materials and introducing new interlayers. The newly developed wide bandgap organic donor and low bandgap acceptor molecules covered the absorption from the visible to the near-infrared region. Whereas the incident high energy region (UV) is not in favor of OSCs. Its absorption causes thermalization losses and photoinduced degradation, which hinders the PCE and lifetime of OSCs. Recently, lanthanide and non-lanthanide-based down-conversion (DC) materials have been introduced, which can effectively convert the high-energy photons (UV) to low-energy photons (visible) and resolve the spectral mismatch losses that limit the absorption of OSCs in high energy incident spectrum. Furthermore, the DC materials also protect the OSCs from UV-induced degradation. The DC materials were also proposed to cross the Shockley-Queisser efficiency limit of the solar cell. In this review, the need for DC materials and their processing method for OSCs have been thoroughly discussed. However, the main emphasis has been given to developing lanthanides and non-lanthanides-based DC materials for OSCs, their applications, and their impact on photovoltaic device performance, stability, and future perspectives.

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Section: Quantum Dotsmentioning

confidence: 99%

Down‐conversion materials for organic solar cells: Progress, challenges, and perspectives

et al. 2022

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“…Due to this quality, QDSSCs are considered promising photovoltaic cells, evidenced by the high levels of research interest in this field [8][9][10][11][12][13][14][15]. This has emphasised the choice of semiconductors that could harvest the entire solar spectrum through their use as QD sensitisers.…”

Section: Introductionmentioning

confidence: 99%

“…In situ routes are solely electrochemical deposition, successive ionic-layer-adsorption reaction, and chemical-bath deposition, but cannot give accurate size distribution. Ex situ routes are direct adsorptions, molecular linker attachment, and electrophoretic deposition, and they separately fabricate the photosensitisers before injecting it with the coated electrode [15]. This study adopted the single-source-precursor route for the synthesis of QD sensitisers through the injection of HDA and oleic acid (OA) to influence their size, morphologies, and structural properties.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Fingerprint of CuS-Hexagonal Chemistry from (Bis(N-1,4-Phenyl-N-(4-Morpholinedithiocarbamato) Copper(II) Complexes) as Photon Absorber in Quantum-Dot/Dye-Sensitised Solar Cells

et al. 2020

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The main deficit of quantum dot/dye-sensitised solar cells (QDSSCs) remains the absence of a photosensitiser that can absorb the entire visible spectrum and increase electrocatalytic activity by enhancing the conversion efficiency of QDSSCs. This placed great emphasis on the synthesis route adopted for the preparation of the sensitiser. Herein, we report the fabrication of hexagonal copper monosulfide (CuS) nanocrystals, both hexadecylamine (HDA) capped and uncapped, through thermal decomposition by thermogravimetric analysis (TGA) and a single-source precursor route. Morphological, structural, and electrochemical instruments were used to assert the properties of both materials. The CuS/HDA photosensitiser demonstrated an appropriate lifetime and electron transfer, while the electron back reaction of CuS lowered the electron lifetime in the QDSSCs. The higher electrocatalytic activity and interfacial resistance observed from current density-voltage (I-V) results agreed with electrochemical impedance spectroscopy (EIS) results for CuS/HDA. The successful fabrication of hexagonal CuS nanostructures of interesting conversion output suggested that both HDA capped and uncapped nanocrystals could be adopted in photovoltaic cells.

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“…While SiNWs show low reflectance over the entire spectral range, this decrease in reflectance could be related to light harvesting and light scattering interactions between densely packed SiNWs [35][36][37]. This remarkable property suggests that SiNW arrays are a good candidate for antireflective surfaces and absorption materials in photovoltaic cells [38]. Fig.…”

Section: Optical Propertiesmentioning

confidence: 99%

Fabrication and Characterization of Silicon Nanowires Heterojunction Solar Cell

Inaya,

Mahdi

2023

IJP

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Silicon nanowire arrays (SiNWs) are created utilizing the metal-assisted chemical etching method with an Ag metal as a catalyst and different etching time of 15, 30, and 60 minutes using n-Si (100). Physical properties such as structural, surface morphology, and optical properties of the prepared SiNWs are studied. The diameter of prepared SiNWs ranged from 20 to 280 nm, and the reflectance in the visible part of the wavelength spectrum was less than 1% for all prepared samples. The obtained energy gap of prepared SiNWs was around 2 eV, which is higher than the energy gap of bulk silicon. X-ray diffraction (XRD) has diffraction peaks at 68.70o for all prepared samples. The heterojunction solar cell was fabricated based on the n-SiNWs/ P3HT/PEDOT: PSS structure. The heterojunction solar cell produced for 60 minutes has the highest Jsc of 11.55 mA.cm-2 and a conversion efficiency of 0.93%. Based on SiNWs prepared for etching time of 15 min, the solar cell demonstrated Jsc and Voc of 2.73 mA/cm2 and 0.46 V, respectively, and a conversion efficiency of 0.34%.

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Quantum dots for solar cell applications

Cited by 6 publications

References 194 publications

Down‐conversion materials for organic solar cells: Progress, challenges, and perspectives

Down‐conversion materials for organic solar cells: Progress, challenges, and perspectives

Electrochemical Fingerprint of CuS-Hexagonal Chemistry from (Bis(N-1,4-Phenyl-N-(4-Morpholinedithiocarbamato) Copper(II) Complexes) as Photon Absorber in Quantum-Dot/Dye-Sensitised Solar Cells

Fabrication and Characterization of Silicon Nanowires Heterojunction Solar Cell

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