Low temperature, solution processed spinel NiCo2O4 nanoparticles as efficient hole transporting material for mesoscopic n-i-p perovskite solar cells

Bashir, Amna; Shukla, Sudhanshu; Bashir, Rabia; Patidar, Rahul; Bruno, Annalisa; Gupta, Dipti; Satti, Muhammad Sultan; Akhter, Zareen

doi:10.1016/j.solener.2019.12.031

Cited by 30 publications

(11 citation statements)

References 74 publications

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“…The PL spectra of pure and co‐doped NiCo 2 O 4 shows several structural defects and various electron‐hole recombination sites. The strong peak without any defects appeared at 364 nm due to the near band edge emission and the peak appeared at 376 nm due to blue emission [21] . As its core, the defect in emission peaks arises due to the introduction of Zn and Mn in NiCo 2 O 4 .…”

Section: Resultsmentioning

confidence: 96%

A Facile One‐Pot Hydrothermal Synthesis of Zn, Mn Co‐Doped NiCo₂O₄ as an Efficient Electrode for Supercapacitor Applications

et al. 2021

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A high electrochemical performance and cost effective solid state NiCo 2 O 4 material was synthesized by hydrothermal method. The performance of the supercapacitor material was investigated by incorporating the zinc and manganese in the crystal structure of NiCo 2 O 4 . The structure and morphology were confirmed by X-ray diffraction (XRD) pattern and Field Emission Scanning Electron Microscope (FE-SEM), and High Resolution Transmission Electron Microscope (HR-TEM). The optical absorption spectra of the pure and co-doped NiCo 2 O 4 were investigated by UV-Vis analysis and the bandgap energy was found to be 4.38 and 2.98 eV respectively. Photoluminescence spectra (PL) reveal the blue and green emission peaks were found at 364, 376 and 488 nm respectively. The pore size and surface area of Mn, Zn co-doped NiCo 2 O 4 was evaluated by Brunauer -Emmett -Teller analysis (BET). The cyclic voltammetry (CV) reveals the faradaic reaction of the pure and co-doped NiCo 2 O 4 with excellent reversibility at higher scan rates. The maximum specific capacitance for pure and co-doped NiCo 2 O 4 nanoparticles (NPs) was achieved as 158.6 and 513.17 Fg À 1 respectively. Further, the electrochemical impedance spectroscopy (EIS) and galvanostatic charge discharge (GCD) were performed to identify the resistance and rate capability of the electrode materials. The cyclic stability of pure and Zn, Mn codoped NiCo 2 O 4 was found to be 90.8 % and 95.07 % respectively for 3000 Cycles. The Zn, Mn co-doped NiCo 2 O 4 can be used as an excellent electrode for supercapacitor applications.

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Section: Resultsmentioning

confidence: 96%

A Facile One‐Pot Hydrothermal Synthesis of Zn, Mn Co‐Doped NiCo₂O₄ as an Efficient Electrode for Supercapacitor Applications

et al. 2021

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“…Among the rare earth metal oxides, CeO 2 is reported to be an excellent dopant for NiCo 2 O 4 nanomaterials [26,27]. Carbonaceous and polymer composite/hybrid NiCo 2 O 4 nano-/microstructures are also found suitable for their potential applications in supercapacitors [28], fuel cells [29], Li-ion batteries [30], electrocatalyst for oxygen reduction reaction and oxygen evolution reaction [31], photo-detector [32], optoelectronic devices [33], perovskite solar cells [34], gas sensors [35][36][37] and biosensors [38,39].…”

Section: Introductionmentioning

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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“…IPA and 1‐butanol are the most common polar solvent to disperse the inorganic HTM for overlaying HTL on the perovskite layer, because it is well‐known that compared to the other polar solvents, they do little damage to the perovskite. [ 11,17,33 ] Nevertheless, when the perovskite layer was submerged in IPA or 1‐butanol overnight, we observed the layer suffered decomposition, bleaching, and detachment, as shown in Figure a, and Figure S7, Supporting Information. After overnight treatment, the color of IPA turned from transparent to yellowish, unlike other solvents, inferring that IPA in particular decomposes and dissolves the perovskite layer, compared to the other solvents.…”

Section: Resultsmentioning

confidence: 92%

Tailoring of Ligand‐Off Nanoparticles Inks for Thin p‐Type Oxide Overlayers Formation with Maintaining Intact Halide Perovskite

Park

Kim

Lee

et al. 2021

Adv Funct Materials

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In n‐i‐p halide perovskite solar cells (HPSCs), the development of p‐type oxides is one of the most noteworthy approaches as hole transport materials (HTMs) for long‐term stability and mass production. However, the deposition of oxide HTMs through a solution process over the perovskite layer without damage to the perovskite layer remains a major challenge. Here, the colloidal dispersion of ligand‐off NiO nanoparticles (NPs) to form the HTM overlayer on perovskite using appropriate solvents that do not damage the underlying perovskite layer is reported. Monodispersed NiO NPs are synthesized using oleylamine (OLA) ligands via the solvothermal method, and the OLA ligands are then removed to form ligand‐off NiO NPs. Based on the Hansen solubility theory, appropriate mixed solvents are found for both the dispersion of NiO NPs without ligands and coating without perovskite damage. The colloidal dispersion form a compact and uniform NiO NPs layer of 30 nm thickness on the perovskite layer, allowing n‐SnO2/Halide/p‐NiO HPSCs to be successfully fabricated. The HPSC shows a record power conversion efficiency under one sun illumination for an n‐i‐p oxide/halide/oxide structure and excellent thermal stability maintaining 98% of the initial efficiency for 580 h under 85 °C and 10% relative humidity condition.

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Low temperature, solution processed spinel NiCo2O4 nanoparticles as efficient hole transporting material for mesoscopic n-i-p perovskite solar cells

Cited by 30 publications

References 74 publications

A Facile One‐Pot Hydrothermal Synthesis of Zn, Mn Co‐Doped NiCo₂O₄ as an Efficient Electrode for Supercapacitor Applications

A Facile One‐Pot Hydrothermal Synthesis of Zn, Mn Co‐Doped NiCo₂O₄ as an Efficient Electrode for Supercapacitor Applications

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

Tailoring of Ligand‐Off Nanoparticles Inks for Thin p‐Type Oxide Overlayers Formation with Maintaining Intact Halide Perovskite

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Low temperature, solution processed spinel NiCo2O4 nanoparticles as efficient hole transporting material for mesoscopic n-i-p perovskite solar cells

Cited by 30 publications

References 74 publications

A Facile One‐Pot Hydrothermal Synthesis of Zn, Mn Co‐Doped NiCo2O4 as an Efficient Electrode for Supercapacitor Applications

A Facile One‐Pot Hydrothermal Synthesis of Zn, Mn Co‐Doped NiCo2O4 as an Efficient Electrode for Supercapacitor Applications

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

Tailoring of Ligand‐Off Nanoparticles Inks for Thin p‐Type Oxide Overlayers Formation with Maintaining Intact Halide Perovskite

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A Facile One‐Pot Hydrothermal Synthesis of Zn, Mn Co‐Doped NiCo₂O₄ as an Efficient Electrode for Supercapacitor Applications

A Facile One‐Pot Hydrothermal Synthesis of Zn, Mn Co‐Doped NiCo₂O₄ as an Efficient Electrode for Supercapacitor Applications