Synthesis of SnSe quantum dots by successive ionic layer adsorption and reaction (SILAR) method for efficient solar cells applications

Kumar, Dhirendra; Loskot, Jan; Křı́ž, Jan; Bennett, Nick; Upadhyaya, Hari M.; Sadhu, Veera; Reddy, Ch. Venkata; Reddy, Kakarla Raghava

doi:10.1016/j.solener.2020.02.050

Cited by 39 publications

(14 citation statements)

References 27 publications

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“…Electrochemical biosensors are mainly based on the output electrical signals changes incurred from either the oxidation or the reduction of the target bioanalyte on the surface of the transducer (Fig. 2) [79][80][81]. These redox reactions are catalyzed by signal transducer enzymes and nanostructured materials in enzyme-based and enzyme-free biosensors, respectively.…”

Section: General Biosensing Mechanismmentioning

confidence: 99%

NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review

Kumar¹

2020

Nano-Micro Lett.

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Non-enzymatic biosensors based on mixed transition metal oxides are deemed as the most promising devices due to their high sensitivity, selectivity, wide concentration range, low detection limits, and excellent recyclability. Spinel NiCo2O4 mixed oxides have drawn considerable attention recently due to their outstanding advantages including large specific surface area, high permeability, short electron, and ion diffusion pathways. Because of the rapid development of non-enzyme biosensors, the current state of methods for synthesis of pure and composite/hybrid NiCo2O4 materials and their subsequent electrochemical biosensing applications are systematically and comprehensively reviewed herein. Comparative analysis reveals better electrochemical sensing of bioanalytes by one-dimensional and two-dimensional NiCo2O4 nano-/microstructures than other morphologies. Better biosensing efficiency of NiCo2O4 as compared to corresponding individual metal oxides, viz. NiO and Co3O4, is attributed to the close intrinsic-state redox couples of Ni3+/Ni2+ (0.58 V/0.49 V) and Co3+/Co2+ (0.53 V/0.51 V). Biosensing performance of NiCo2O4 is also significantly improved by making the composites of NiCo2O4 with conducting carbonaceous materials like graphene, reduced graphene oxide, carbon nanotubes (single and multi-walled), carbon nanofibers; conducting polymers like polypyrrole (PPy), polyaniline (PANI); metal oxides NiO, Co3O4, SnO2, MnO2; and metals like Au, Pd, etc. Various factors affecting the morphologies and biosensing parameters of the nano-/micro-structured NiCo2O4 are also highlighted. Finally, some drawbacks and future perspectives related to this promising field are outlined.

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Section: General Biosensing Mechanismmentioning

confidence: 99%

NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review

Kumar¹

2020

Nano-Micro Lett.

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“…To evaluate the role of the Li treatment on TiO 2 films in the DSSC performance, EIS was performed in the dark in a frequency range of 0.1 MHz to 0.1 Hz and under open-circuit voltage conditions for untreated and Li-treated devices. Generally, the Nyquist plot of DSSCs shows semicircles at high (>1000 Hz), medium (1–1000), and low frequencies (<1 Hz) . The semicircle at high frequencies represents the FTO/Pt/electrolyte interface, the semicircle at medium frequencies represents the FTO/TiO 2 /dye/electrolyte interface, and the semicircle at low frequencies represents the diffusion caused by the iodide/tri-iodide electrolyte.…”

Section: Resultsmentioning

confidence: 99%

Lithium Incorporation into TiO₂ Photoanode for Performance Enhancement of Dye-Sensitized Solar Cells

Swami,

Kumar,

Radu

et al. 2023

ACS Appl. Energy Mater.

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Dye-sensitized solar cells (DSSCs) are one of the most favorable solar cell technologies owing to their low cost and ease of fabrication. The electron transport layer, consisting of a mesoporous titanium oxide (TiO 2 ) photoanode, plays a crucial role in DSSCs. In this study, we performed a post-lithium (Li) treatment on TiO 2 films to enhance the optoelectronic features and power conversion efficiency (PCE) of DSSCs. The material properties of pristine and Li-treated TiO 2 films were examined by X-ray diffraction (XRD), atomic force microscopy (AFM), steady-state photoluminescence (PL), and X-ray photoelectron spectroscopy (XPS). Li treatment was confirmed to suppress defects and enhance the crystallinity of the TiO 2 films. Furthermore, TiO 2 films sensitized with N719 dye were used as photoanodes and Pt as a counter electrode for the fabrication of DSSCs. The devices with 0.1 M Li-TFSI treatment showed a performance improvement of ∼20%, with a PCE of 10.5%, while the control DSSC had a PCE of 8.7%. The device performance was significantly enhanced owing to improved structural properties, efficient charge transport, and suppression of recombination owing to the passivation of trap states.

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“…These materials are easy to synthesize and can be utilized for numerous applications such as optoelectronics, solar cells, photocatalysis, spintronics, supercapacitors, and self-powered photodetectors. 1,7–16 S-TMCs are TX 2 or TX (T is transition atom like Sn, W, Mo and X is chalcogen such as S, Se, Te) type layered structures through covalent bonds and the layers are interconnected through weak van der Waal's interactions. S-TMCs have improved device properties like high mobility, high carrier concentration, quick on/off response due to robust light matter interaction, & good in-plane thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

Stability & durability of self-driven photo-detective parameters based on Sn_1−βSb_βSe (β = 0, 0.05, 0.10, 0.15, 0.20) ternary alloy single crystals

Jagani

Dixit

Patel³

et al. 2022

RSC Adv.

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Synthesis of SnSe quantum dots by successive ionic layer adsorption and reaction (SILAR) method for efficient solar cells applications

Cited by 39 publications

References 27 publications

NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review

NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review

Lithium Incorporation into TiO₂ Photoanode for Performance Enhancement of Dye-Sensitized Solar Cells

Stability & durability of self-driven photo-detective parameters based on Sn_1−βSb_βSe (β = 0, 0.05, 0.10, 0.15, 0.20) ternary alloy single crystals

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Synthesis of SnSe quantum dots by successive ionic layer adsorption and reaction (SILAR) method for efficient solar cells applications

Cited by 39 publications

References 27 publications

NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review

NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review

Lithium Incorporation into TiO2 Photoanode for Performance Enhancement of Dye-Sensitized Solar Cells

Stability & durability of self-driven photo-detective parameters based on Sn1−βSbβSe (β = 0, 0.05, 0.10, 0.15, 0.20) ternary alloy single crystals

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Product

Resources

About

Lithium Incorporation into TiO₂ Photoanode for Performance Enhancement of Dye-Sensitized Solar Cells

Stability & durability of self-driven photo-detective parameters based on Sn_1−βSb_βSe (β = 0, 0.05, 0.10, 0.15, 0.20) ternary alloy single crystals