Copper-indium-sulfide colloids on quantum dot sensitized TiO2 solar cell: Effects of capping with mercapto-acid linker molecules

Higashimoto, Shinya; Nakase, Takuto; Mukai, Shun; Takahashi, Masanari

doi:10.1016/j.jcis.2018.09.092

Cited by 18 publications

(5 citation statements)

References 30 publications

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“…Furthermore, hydrothermal conditions favor a better crystallization of the particles, yielding less surface defects and better luminescence, even without the addition of a shell, usually necessary in other procedures [ 26 ]. Several examples of CIS nanocrystals synthesized in water and used in QDSSCs exist [ 10 , 17 , 19 , 27 , 28 , 29 ] with a current record efficiency of 8.15% ( Table S2 ) [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of Aqueous-Soluble Copper Indium Sulfide Nanocrystals and Their Use in Quantum Dot Sensitized Solar Cells

et al. 2020

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A facile hydrothermal method to synthesize water-soluble copper indium sulfide (CIS) nanocrystals (NCs) at 150 °C is presented. The obtained samples exhibited three distinct photoluminescence peaks in the red, green and blue spectral regions, corresponding to three size fractions, which could be separated by means of size-selective precipitation. While the red and green emitting fractions consist of 4.5 and 2.5 nm CIS NCs, the blue fraction was identified as in situ formed carbon nanodots showing excitation wavelength dependent emission. When used as light absorbers in quantum dot sensitized solar cells, the individual green and red fractions yielded power conversion efficiencies of 2.9% and 2.6%, respectively. With the unfractionated samples, the efficiency values approaching 5% were obtained. This improvement was mainly due to a significantly enhanced photocurrent arising from complementary panchromatic absorption.

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Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of Aqueous-Soluble Copper Indium Sulfide Nanocrystals and Their Use in Quantum Dot Sensitized Solar Cells

et al. 2020

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“…Another important point in the use of these ligands is the need to use hydrophilic ligands for facilitate QD adsorption on the photoanode. [87,88] Jun Du et al [89] tested different ligands for QD ZnCuInSe 2 . It was demonstrated that the efficiencies of QDSSCs were independent of this surface defects density.…”

Section: Qdsmentioning

confidence: 99%

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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“…Generally, liquid HC is used in QDS cells in form of a redox electrolyte. The most important redox electrolytes used in QDS cells including Iodide electrolyte (I − /I 3− ), Polysulfide electrolyte (S 2− /S x ), Ferrocene electrolyte (Fe(CN) 6 3− /Fe(CN) 6 4− ), Cobalt-based electrolyte, etc. Solid HCs are used to alleviate the leakage issues related to liquid hole conducting materials.…”

Section: Hole Conductormentioning

confidence: 99%

“…It is defined as the ratio between the maximum obtainable power and the product of short-circuit current and open-circuit voltage. The expression for the FF can be defined as in Equation (6).…”

Section: Performance Metricsmentioning

confidence: 99%

“…Hence, research on the application of PV technologies based on nanomaterials is of strategic and realistic significance. At present, quantum dot (QD) is a topic of intense research activity aiming at a wide variety of commercial applications [6]. Adaptable near-infra-red optical absorption [7], higher absorption constant [8], hot electron injection [9], multiple exciton generation [10], lower cost, and rationally higher PCE [11] are some of the attractive characteristics of the quantum dot materials.…”

Section: Introductionmentioning

confidence: 99%

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Studies on copper indium selenide/Zinc sulphide semiconductor quantum dots for solar cell applications

Babu¹,

Padmanabhan²,

Ahamed³

et al. 2021

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Despite dedicated efforts to develop efficient quantum dot sensitized (QDS) photovoltaic cells, the efficiency of these cells still lags behind their theoretical value. In order to increase photo conversion efficiency, the extant methods are predominantly focus on modifying the band gaps of quantum dots and optimizing the interfaces of cell components to increase light utilization capacity. In this study, we have designed and investigated QDS solar cells using Copper Indium Selenide (CuInSe2 or simply CIS) as a quantum dot absorber. In order to achieve tunable bandgap, increased photoluminescence, reduced density of surface defect state and higher light-harvesting efficiency, the CuInSe2 is alloying with Zinc sulfide (ZnS) to design Copper Indium Selenide-Zinc sulfide (CISZS) quantum dots. The resulting CISZS sensitizer exhibits improved photoelectric characteristics and greater chemical stability. The performance of the CIS and CISZS solar cells is evaluated individually through Silvaco-Atlas simulation software in terms of measures such as power conversion efficiency, open-circuit voltage (Voc), the density of short-circuit current (Jsc) and fill-factor (FF). The CISZS-based solar cells show an average conversion efficiency of 23.5% (i.e., 4.94% higher than the efficiency of CIS solar cell) with Voc = 0.596V, Jsc = 23.61mA/cm2 and FF = 0.84 under AM 1.5G with a power density of 100mW/cm2 . The achieved power conversion efficiency indicates the greatest performances of the QDS solar cells. These non-toxic photovoltaic devices reveal better optical and electrical properties than toxic lead and cadmium chalcogenide quantum dots absorbers.

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Copper-indium-sulfide colloids on quantum dot sensitized TiO2 solar cell: Effects of capping with mercapto-acid linker molecules

Cited by 18 publications

References 30 publications

Hydrothermal Synthesis of Aqueous-Soluble Copper Indium Sulfide Nanocrystals and Their Use in Quantum Dot Sensitized Solar Cells

Hydrothermal Synthesis of Aqueous-Soluble Copper Indium Sulfide Nanocrystals and Their Use in Quantum Dot Sensitized Solar Cells

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

Studies on copper indium selenide/Zinc sulphide semiconductor quantum dots for solar cell applications

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