Effect of precursors on Cu2S counter electrode on the quantum dot sensitized solar cell performance

Phuong, Ho; Man, Tran Van; Tung, Ha Thanh; Jun, Hieng Kiat; Thang, Bui Van; Lam, Vinh

doi:10.1007/s40042-022-00460-8

Cited by 6 publications

(6 citation statements)

References 48 publications

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“…Additionally, this result completely agrees with that of Yuan et al [21] and Radich et al [35]. Additionally, the outcomes are very different from QDSSCs based on the Cu 2 S counter electrode the researchers developed [13]. Table 1's data demonstrates that the CE with 12 mg -GO is more mobile than other samples.…”

Section: Resultssupporting

confidence: 86%

“…This shows that rGO material has formed into rGO@Cu 2 S nanocomposite films. In addition, the diffraction peaks of Cu 2 S are very clear in the 2 patterns at 33°and 54.27°, which match the phase structure of g-Cu 2 S according to the standard 09-0328 JCPDS [13,34]. Thus, it can be concluded that the nanocomposite rGO@Cu 2 S nano-thin film material is based on FTO and has been fabricated successfully.…”

Section: Resultssupporting

confidence: 61%

“…In this paper, we discuss the improvement of this battery's performance on the basis of changing the composition of the counter electrodes. Currently, there are quite a few CEs electrodes that have been studied, such as Pt [9,10], NiS [11], CoS [12], CuS [10], Cu 2 S [13,14], and PbS [14]. However, the highest efficiency belongs to the Cu 2 S electrode directly coated on the FTO substrate, with a PCE > 4%.…”

Section: Introductionmentioning

confidence: 99%

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Highly catalytic reduced graphene oxide decorated Cu₂S counter electrode boosting quantum dot–sensitized solar cell performance

Thanh Tung,

Dang,

Dan

et al. 2024

Phys. Scr.

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This paper presents the results of the fabrication and design of quantum dot solar cells with cathode electrodes based on rGO@Cu2S nanocomposite. This material is made by the hydrothermal method to form a powder, which is then dispersed in the organic compounds polyethylene glycol and polyvinylpyrrolidone to form a paste coating on the FTO conductive substrate by the printing-screen method. Cu2S, rGO, and nanocomposite rGO@Cu2S electrodes with the initial mass of graphene oxide varying at 8 mg, 12 mg, and 16 mg. The composition and structure of the films were determined using EDX mapping, XRD, Raman spectroscopy, and FTIR spectra, confirming that they were successfully fabricated. In addition, the results showed that the surface of the film is very porous, making it suitable for electrode fabrication. The results of measuring the PCE show that the efficiency is effectively improved. The efficiency of the rGO counter electrodes is increased as compared to the Cu2S counter electrodes. The device has the highest efficiency of 5.665%, VOC = 0.48V, JSC = 22.776 mA/cm2, and FF = 0.518 for 12mg-rGO@Cu2S counter electrode. This result shows that the support of the graphene network helps the Cu2S nanoparticles to be distributed more evenly when Cu2S material is directly coated on the FTO. Besides, the graphene network also helps to make the electrons transition to the polysulfidide more flexible, which is proven through cyclic voltammetry and electrochemical impedance spectroscopy results.

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Section: Resultssupporting

confidence: 86%

Section: Resultssupporting

confidence: 61%

Section: Introductionmentioning

confidence: 99%

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Highly catalytic reduced graphene oxide decorated Cu₂S counter electrode boosting quantum dot–sensitized solar cell performance

Thanh Tung,

Dang,

Dan

et al. 2024

Phys. Scr.

Self Cite

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“…It is smaller than that of Pt (46.7 Ω) and rGO (21.8 Ω) counter electrode. This value also is very small if compared with the results of Phuong et al [44].…”

Section: Resultscontrasting

confidence: 51%

“…This finding demonstrates that the rGO-Cu2S electrode has superior electrochemical characteristics to the Pt electrode. In the previous study by tung group and colleagues, they successfully fabricated a Cu2S cathode electrode with a photoelectric conversion efficiency of 3.77%, many times higher than other cathode electrodes such as Pt or PbS [44]. In this study, the QDSSCs were created using an electrode that contained a significant amount of GO.…”

Section: Resultsmentioning

confidence: 94%

Synthesis of reduced graphene oxide decotate Cu2S nanoparticles for cathode of quantum dot solar cell

Doan Duy,

Thi Ngoc Tu,

Tien Dat

2024

TELKOMNIKA

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In this paper, the results of making a reduced graphene oxide cathode electrode with Cu2S nanoparticles are shown so that it can be used as a counter electrode in quantum dot solar cells to replace other counter electrodes. An rGO-Cu2S paste obtained by hydrolysis was scanned onto the surface of the fluorine-doped tin oxide (FTO) conductive substrate when bound to Cu2S nano by a screen-printing process, then calcined at 350 °C to crystallize the film. Following calcination, the film was examined for structure using energy-dispersive X-ray (EDX) and X-ray diffraction (XRD) spectroscopy, as well as for type and particle size using scanning and transmission electron microscopy and transmission electron microscopy, respectively. Mott-schottky measurement is used to determine the semiconductor and carrier concentrations in the film, and an electrochemical device is used to assess the electrodes redox capacity in a polysulfide electrolyte solution. The operability of the rGO-Cu2S cathode at the peak of the current density in the C-V curve was 24 mA/cm 2 , a 30-fold increase compared to that of the Cu2S electrode. This result shows that the efficiency, Voc, FF, Jsc are 4.92%, 0.525 V, 0.418, and 22.4 mA/cm 2 , respectively.

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Recent Progresses in Quantum‐Dot‐Sensitized Solar Cells: The Role of Counter Electrodes

Carvalho Junior,

Nunes,

Machado

et al. 2024

Energy Tech

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Energy demand, global warming, environmental impacts, sustainability, and energy sources are some of the concerns faced by humanity. Quantum‐dot‐sensitized solar cells (QDSSC) are an alternative solution to addressing some of these issues, in addition to reducing the costs of producing electrical energy. However, QDSSCs present stability problems and low efficiency, less than 16%. In light of this challenge, this review aims to present the main strategies adopted to reduce energy losses that occur in each component of the solar cell, with a focus on one key component: the counter electrode (CE). The CE plays a crucial role in collecting electrons and regenerating the electrolyte, thus impacting the lifespan and efficiency of QDSSCs. As such, this review discusses the main advancements in CEs based on key materials such as metal sulfides, carbonaceous materials, and composites. The efforts related to the synthesis and application of different counter electrodes for QDSSCs are explored.

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Effect of precursors on Cu2S counter electrode on the quantum dot sensitized solar cell performance

Cited by 6 publications

References 48 publications

Highly catalytic reduced graphene oxide decorated Cu₂S counter electrode boosting quantum dot–sensitized solar cell performance

Highly catalytic reduced graphene oxide decorated Cu₂S counter electrode boosting quantum dot–sensitized solar cell performance

Synthesis of reduced graphene oxide decotate Cu2S nanoparticles for cathode of quantum dot solar cell

Recent Progresses in Quantum‐Dot‐Sensitized Solar Cells: The Role of Counter Electrodes

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Effect of precursors on Cu2S counter electrode on the quantum dot sensitized solar cell performance

Cited by 6 publications

References 48 publications

Highly catalytic reduced graphene oxide decorated Cu2S counter electrode boosting quantum dot–sensitized solar cell performance

Highly catalytic reduced graphene oxide decorated Cu2S counter electrode boosting quantum dot–sensitized solar cell performance

Synthesis of reduced graphene oxide decotate Cu2S nanoparticles for cathode of quantum dot solar cell

Recent Progresses in Quantum‐Dot‐Sensitized Solar Cells: The Role of Counter Electrodes

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Product

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Highly catalytic reduced graphene oxide decorated Cu₂S counter electrode boosting quantum dot–sensitized solar cell performance

Highly catalytic reduced graphene oxide decorated Cu₂S counter electrode boosting quantum dot–sensitized solar cell performance