Facile synthesis of CuInGaS<sub>2</sub> quantum dot nanoparticles for bilayer-sensitized solar cells

Zhao, Jinjin; Zhang, Jie; Wang, Wenna; Wang, Peng; Li, Feng; Ren, Deliang; Si, Huanyan; Sun, Xiaowei; Ji, Fengqiu; Yuan, Hongchun

doi:10.1039/c4dt02150a

Cited by 11 publications

(15 citation statements)

References 49 publications

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“…5 and Table 1, the pore size distribution of TiO 2 @CGS shows a smaller mesopore size of 3.6 nm compared to 10.4 nm of TiO 2 nanoparticles. The BET surface area and mesopore volume of TiO 2 @CGS are measured to be 22.03 m 2 g −1 and 0.098 cm 3 g −1 , respectively, which are 51.3% and 40.2% less than those of TiO 2 nanoparticles, in accordance with previously reported studies [54]. Smaller particle size (2-5 nm) of the CGS QDs led to a severe aggregation within the mesopores, and thus decreased the mesopore volume.…”

Section: Resultssupporting

confidence: 76%

“…Co-sensitization of semiconductor QDs and organic dyes has also been investigated as an effective strategy for enrichment [54,55,63,64]. The J-V curves in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The synthesis of TiO 2 nanoparticles was as the following procedure [54]. 2.97 g F127 was dissolved in 36.88 g ethanol at 40°C and stirred for 30 min to obtain a clear solution.…”

Section: Synthesis Of Tio 2 Nanoparticlesmentioning

confidence: 99%

“…1. Because of the quantum confinement effects, the CuGaS 2 QDs hold a higher conduction band (CB) edge, which facilitates the photoelectron injection from the excited CuGaS 2 QDs into TiO 2 nanoparticles [52][53][54]. Moreover, the CuGaS 2 QDs in the TiO 2 @CGS nanocrystals could act as complimentary sensitizers to enhance the light harvesting properties in dye sensitized solar cell (DSSC).…”

Section: Introductionmentioning

confidence: 99%

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Enhanced performance of solar cells via anchoring CuGaS2 quantum dots

et al. 2017

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Ternary I-III-VI quantum dots (QDs) of chalcopyrite semiconductors exhibit excellent optical properties in solar cells. In this study, ternary chalcopyrite CuGaS 2 nanocrystals (2-5 nm) were one-pot anchored on TiO 2 nanoparticles (TiO 2 @CGS) without any long ligand. The solar cell with TiO 2 @CuGaS 2 /N719 has a power conversion efficiency of 7.4%, which is 23% higher than that of monosensitized dye solar cell. Anchoring CuGaS 2 QDs on semiconductor nanoparticles to form QDs/dye co-sensitized solar cells is a promising and feasible approach to enhance light absorption, charge carrier generation as well as to facilitate electron injection comparing to conventional mono-dye sensitized solar cells.

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Section: Resultssupporting

confidence: 76%

“…Co-sensitization of semiconductor QDs and organic dyes has also been investigated as an effective strategy for enrichment [54,55,63,64]. The J-V curves in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The synthesis of TiO 2 nanoparticles was as the following procedure [54]. 2.97 g F127 was dissolved in 36.88 g ethanol at 40°C and stirred for 30 min to obtain a clear solution.…”

Section: Synthesis Of Tio 2 Nanoparticlesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Enhanced performance of solar cells via anchoring CuGaS2 quantum dots

et al. 2017

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“…TiO2 nanoparticles were fabricated first as following [32]. Pluronic F127 (2.97 g) was dissolved in 36.88 g ethanol at 40°C for 30 min to form a clear solution, after which 3.4 g TiCl4 was added to the solution.…”

Section: Fabrication Of Tio2 Nanocrystals and Esl Filmsmentioning

confidence: 99%

A sintering-free, nanocrystalline tin oxide electron selective layer for organometal perovskite solar cells

Zhao

Liu

et al. 2017

Sci. China Mater.

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Effective electron selective layer (ESL) is critical for the power conversion efficiency in organometal halidebased perovskite solar cells (PSCs). In this work, a spincoating process has been developed to fabricate high quality nanocrystalline SnO2 film at 100°C without further sintering at higher temperature. When used as ESL in PSCs, such SnO2 film shows greater electron extraction ability and higher efficiency than TiO2 film processed under similar condition, as evidenced by the efficient time-resolved photoluminescence (TRPL) quenching SnO2/CH3NH3PbI3 film. As a result, the SnO2-based PSCs possess higher open circuit voltage of 0.91 V, short circuit current density of 20.73 mA cm -2 , and fill factor of 64.25%, corresponding to a conversion efficiency of 12.10%, compared with 7.16% of TiO2-based PSCs. This demonstrates the great potential of applying spin-coating sintering-free process for the low-cost and large-scale manufacturing of PSCs.

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Compound Copper Chalcogenide Nanocrystals

et al. 2017

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This review captures the synthesis, assembly, properties, and applications of copper chalcogenide NCs, which have achieved significant research interest in the last decade due to their compositional and structural versatility. The outstanding functional properties of these materials stems from the relationship between their band structure and defect concentration, including charge carrier concentration and electronic conductivity character, which consequently affects their optoelectronic, optical, and plasmonic properties. This, combined with several metastable crystal phases and stoichiometries and the low energy of formation of defects, makes the reproducible synthesis of these materials, with tunable parameters, remarkable. Further to this, the review captures the progress of the hierarchical assembly of these NCs, which bridges the link between their discrete and collective properties. Their ubiquitous application set has cross-cut energy conversion (photovoltaics, photocatalysis, thermoelectrics), energy storage (lithium-ion batteries, hydrogen generation), emissive materials (plasmonics, LEDs, biolabelling), sensors (electrochemical, biochemical), biomedical devices (magnetic resonance imaging, X-ray computer tomography), and medical therapies (photochemothermal therapies, immunotherapy, radiotherapy, and drug delivery). The confluence of advances in the synthesis, assembly, and application of these NCs in the past decade has the potential to significantly impact society, both economically and environmentally.

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Facile synthesis of CuInGaS₂ quantum dot nanoparticles for bilayer-sensitized solar cells

Cited by 11 publications

References 49 publications

Enhanced performance of solar cells via anchoring CuGaS2 quantum dots

Enhanced performance of solar cells via anchoring CuGaS2 quantum dots

A sintering-free, nanocrystalline tin oxide electron selective layer for organometal perovskite solar cells

Compound Copper Chalcogenide Nanocrystals

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Facile synthesis of CuInGaS2 quantum dot nanoparticles for bilayer-sensitized solar cells

Cited by 11 publications

References 49 publications

Enhanced performance of solar cells via anchoring CuGaS2 quantum dots

Enhanced performance of solar cells via anchoring CuGaS2 quantum dots

A sintering-free, nanocrystalline tin oxide electron selective layer for organometal perovskite solar cells

Compound Copper Chalcogenide Nanocrystals

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Facile synthesis of CuInGaS₂ quantum dot nanoparticles for bilayer-sensitized solar cells