Outstanding Photocurrent Density and Incident Photon‐to‐Current Conversion Efficiency of Liquid‐State NiO Perovskite‐Sensitized Solar Cells

Alessa, Hussain; Noh, Mohamad Firdaus Mohamad; Mumthas, Inzamam Nawas Nawas; Wijayantha, K. G. Upul; Teridi, Mohd Asri Mat

doi:10.1002/pssa.201900607

Cited by 6 publications

(3 citation statements)

References 18 publications

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“…Nickel(II) oxide thin films are highly appealing in numerous fields of technological applications. Due to its p-type semiconducting behavior, NiO is a promising hole transport layer for dye-sensitized and perovskite solar cells. − Additionally, it has been widely used for gas sensing applications , and owing to its inherent chemical stability NiO can serve as a protection layer for photocatalysts which are generally prone to photocorrosion. , In view of its high activity as an oxygen evolution reaction (OER) catalyst, NiO is applicable in photoelectrochemical electrodes as well as conventional electrodes for electrochemical water-splitting applications. , …”

Section: Introductionmentioning

confidence: 99%

Tuning Coordination Geometry of Nickel Ketoiminates and Its Influence on Thermal Characteristics for Chemical Vapor Deposition of Nanostructured NiO Electrocatalysts

et al. 2020

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Nickel-based nanostructured materials have gained widespread attention, particularly for energy-related applications. Employing chemical vapor deposition (CVD) for NiO necessitates suitable nickel precursors that are volatile and stable. Herein, we report the synthesis and characterization of a series of new nickel β-ketoiminato complexes with different aliphatic and etheric side chain substitutions, namely, bis(4-(isopropylamino)-pent-3-en-2-onato)nickel(II) ([Ni(ipki)2], 1), bis(4-(2-methoxyethylamino)pent-3-en-2-onato)nickel(II) ([Ni(meki)2], 2), bis(4-(2-ethoxyethylamino)pent-3-en-2-onato)nickel(II) ([Ni(eeki)2], 3), bis(4-(3-methoxy-propylamino)-pent-3-en-2-onato)nickel(II) ([Ni(mpki)2], 4), and bis(4-(3-ethoxypropylamino)pent-3-en-2-onato)nickel(II) ([Ni(epki)2], 5). These compounds have been thoroughly characterized with regard to their purity and identity by means of nuclear magnetic resonance spectroscopy (NMR) and electron impact mass spectrometry (EI-MS). Contrary to other transition metal β-ketoiminates, the imino side chain strongly influences the structural geometry of the complexes, which was ascertained via single-crystal X-ray diffraction (XRD). As a result, the magnetic momenta of the molecules also differ significantly as evidenced by the magnetic susceptibility measurements employing Evan’s NMR method in solution. Thermal analysis revealed the suitability of these compounds as new class of precursors for CVD of Ni containing materials. As a representative precursor, compound 2 was evaluated for the CVD of NiO thin films on Si(100) and conductive glass substrates. The as-deposited nanostructured layers were stoichiometric and phase pure NiO as confirmed by XRD, Rutherford backscattering spectrometry (RBS), and nuclear reaction analysis (NRA). X-ray photoelectron spectroscopy (XPS) indicated the formation of slightly oxygen-rich surfaces. The assessment of NiO films in electrocatalysis revealed promising activity for the oxygen evolution reactions (OER). The current densities of 10 mA cm–2 achieved at overpotentials ranging between 0.48 and 0.52 V highlight the suitability of the new Ni complexes in CVD processes for the fabrication of thin film electrocatalysts.

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Section: Introductionmentioning

confidence: 99%

Tuning Coordination Geometry of Nickel Ketoiminates and Its Influence on Thermal Characteristics for Chemical Vapor Deposition of Nanostructured NiO Electrocatalysts

et al. 2020

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“…Hybrid-perovskite halide semiconductor is an emerging light-harvesting material, which leads to moving forward for the outstanding performance in the field of photovoltaic (PV) device due to their high absorption coefficient, high charge carrier lifetime, high open-circuit voltage, tunable bandgap, outstanding power conversion efficiency (PCE), and simple solution processable technique. [1][2][3][4][5][6] The perovskite photovoltaic device has been developing rapidly with certified efficiency exceeding $25.5%, which is comparable to existing crystalline silicon solar cell technologies. 7 Although, exceeding in the PCE, perovskite solar cell (PSC) has poor long-term stability under outdoor conditions which needs to be addressed to realize the goal for commercialization.…”

Section: Introductionmentioning

confidence: 99%

Poly(vinylidene fluoride‐co‐hexafluoropropylene) additive in perovskite for stable performance of carbon‐based perovskite solar cells

Santhosh¹,

Ravindran²,

Thomas³

et al. 2021

Intl J of Energy Research

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The efficiency of perovskite devices is depending on the crystallization process with a controlled microstructure. Perovskite precursors with polymer additive significantly improve the perovskite film crystallinity, large grain boundaries, serve as passivating defect sites yielding increased power conversion efficiency (PCE). In this study, we improved the hole-transport free carbon-based perovskite solar cells by using polymer additive to passivate the perovskite grains with large size crystal and assist to grow with the preferred orientation of the polycrystalline perovskite layer. The polymer additive systematically alters the morphology of the perovskite films. The perovskite with polymer additives exhibited reduced trap density, which could enhance the open-circuit voltage.The fluoro-polymer as an additive into perovskite layer facilitated a hydrogen bond with organic cation to form H-F bond, which could prevent degradation from moisture. The solar device with 5 wt% PVDF-HFP additives achieved $14% improvement in open-circuit voltage and yielded a PCE of 11.11%. Moreover, the shelf-life of the solar device retains 86% from its original efficiency with a period of 30 days (stored under ambient condition, 60%-70% humidity). It is revealing that the fluoro-polymer enhances the passivation of perovskite grains and gives a hope in perovskite photovoltaics.

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“…The economic viability of the perovskite solar cells is strongly dependent on the degradation rate of the material and despite the high efficiency, the faster degradation increases the overall operational cost [28] , [29] . However, the utilization of degraded perovskite material in the application such as photodetectors or perovskite-based sensing devices can be a novel route towards the cost-effective and environment-friendly perovskite technology [30] , [31] .…”

Section: Introductionmentioning

confidence: 99%

A novel and stable ultraviolet and infrared intensity sensor in impedance/capacitance modes fabricated from degraded CH3NH3PbI3-xClx perovskite materials

Qasuria

Fatima

Karimov

et al. 2020

Journal of Materials Research and Technology

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The present situation of COVID-19 diverted our focus towards utilizing the degraded solar cells for sensor application, this will help in global energy harvesting. So, here is our successful effort to reuse already degraded solar cells as ultraviolet (UV) and infrared (IR) sensor. The spin-coated perovskite (CH 3 NH 3 PbI 3-X Cl X ) has been already tested for visible light spectrum, as an extension to that now it is utilized as UV and IR intensity sensors to cover the whole spectrum. The employed CH 3 NH 3 PbI 3-X Cl X material was used after its efficiency loss has been reached to a saturation point in photovoltaic devices. Each deposited layer was investigated from UV to the IR absorption spectrum for deepening study through UV–vis spectroscopy. In the sandwiched architecture possessing FTO/PEDOT: PSS/Perovskite/PC 61 BM/CdS/Au symmetry, the perovskite film has been employed as an absorbent layer, however, other layers participation also plays a key role. The resultant device yielded very good sensing performance because of the enhanced excitons generation which is attributed to the precise selection of the interfacial materials, e.g. CdS and PC 61 BM as an ETM and PEDOT: PSS as HTM. The impedance and capacitance of the devices within 0.01−200 kHz under varied UV and IR illumination intensities were investigated. Measurements showed that as the intensity of the light increased i.e., UV (0–200 W/m 2 ) and IR (0–5800 W/m 2 ), impedance decreased while capacitance increased. The current results are attributed to the increase in the concentration of charges i.e., electron-hole pairs generation depending on the built-in capacitance and frequency of the charges.

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Outstanding Photocurrent Density and Incident Photon‐to‐Current Conversion Efficiency of Liquid‐State NiO Perovskite‐Sensitized Solar Cells

Cited by 6 publications

References 18 publications

Tuning Coordination Geometry of Nickel Ketoiminates and Its Influence on Thermal Characteristics for Chemical Vapor Deposition of Nanostructured NiO Electrocatalysts

Tuning Coordination Geometry of Nickel Ketoiminates and Its Influence on Thermal Characteristics for Chemical Vapor Deposition of Nanostructured NiO Electrocatalysts

Poly(vinylidene fluoride‐co‐hexafluoropropylene) additive in perovskite for stable performance of carbon‐based perovskite solar cells

A novel and stable ultraviolet and infrared intensity sensor in impedance/capacitance modes fabricated from degraded CH3NH3PbI3-xClx perovskite materials

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