Redox reactions in solar cells

Edge-selenated graphene nanoplatelets as durable metal-free catalysts for iodine reduction reaction in dye-sensitized solar cells | Science Advances

Metal-free carbon-based electrocatalysts for dye-sensitized solar cells (DSSCs) are sufficiently active in Co(II)/Co(III) ... (bpy) 3 3+ and I 3 − reduction reactions was investigated by electrochemical kinetics, density functional theory (DFT), and nonequilibrium ...

Overcoming Redox Reactions at Perovskite-Nickel Oxide …

We present two strategies to prevent this reaction from occurring when fabricating perovskite solar cells: (1) A-site post-treatments to the NiO x HTL or (2) use of excess A-site in the perovskite precursor solution to counteract the loss in organohalide …

Overcoming Redox Reactions at Perovskite-Nickel Oxide Interfaces to Boost Voltages in Perovskite Solar Cells …

DOI: 10.1016/j.joule.2020.06.004 Corpus ID: 225425901 Overcoming Redox Reactions at Perovskite-Nickel Oxide Interfaces to Boost Voltages in Perovskite Solar Cells @article{Boyd2020OvercomingRR, title={Overcoming Redox Reactions at Perovskite-Nickel Oxide Interfaces to Boost Voltages in Perovskite Solar Cells}, …

Suppressing Nickel Oxide/Perovskite Interface Redox Reaction and Defects for Highly Performed and Stable Inverted Perovskite Solar Cells

The inorganic hole transport layer of nickel oxide (NiO<sub>x</sub> ) has shown highly efficient, low-cost, and scalable in perovskite photovoltaics. However, redox reactions at the interface between NiO<sub>x</sub> and perovskites limit their commercialization. In this study, ABABr (4-(2-Aminoethyl …

Redox Shuttle-Based Electrolytes for Dye-Sensitized Solar Cells: …

A redox electrolyte is a crucial part of dye-sensitized solar cells (DSSCs), which plays a significant role in the photovoltage and photocurrent of the DSSCs through efficient dye regeneration and minimization of charge recombination. An I–/I3– redox shuttle has been mostly utilized, but it limits the open-circuit voltage (Voc) to 0.7–0.8 V. To …

An organic redox electrolyte to rival triiodide/iodide in dye-sensitized solar cells …

Dye-sensitized solar cells (DSCs) have achieved impressive conversion efficiencies for solar energy of over 11% with an electrolyte that contains triiodide/iodide as a redox couple. Although ...

Light-Induced Redox Reactions in Nanocrystalline Systems

A Study of Redox Mediator Types and Their Quenching Effects on the Triplet–Triplet Annihilation Photon Upconversion Process. ... Reduced Charge-Transfer Threshold in Dye-Sensitized Solar Cells with an Au@Ag/N3/n-TiO2 Structure As …

Improved reverse bias stability in p–i–n perovskite solar cells with …

In other words, the electrochemical reactions, which are directly linked to solar cell degradation, rely on the reduction reaction (electron injection) rates at the …

Controlled NiO x Defect Engineering to Harnessing Redox Reactions in Perovskite Photovoltaic Cells …

Albeit the undesirable attributes of NiOx, such as low conductivity, unmanageable defects, and redox reactions occurring at the perovskite/NiOx interface, which impede the progress in inverted perovskite solar cells (i-PSCs), it is the most favorable choice of technology for industrialization of PSCs. In this study, we propose a …

Low-loss contacts on textured substrates for inverted perovskite …

Boyd, C. C. et al. Overcoming redox reactions at perovskite-nickel oxide interfaces to boost voltages in perovskite solar cells. Joule 4, 1759–1775 (2020). Article …

Overcoming Redox Reactions at Perovskite-Nickel Oxide Interfaces to Boost Voltages in Perovskite Solar Cells

JOUL, Volume 4 Supplemental Information Overcoming Redox Reactions at Perovskite-Nickel Oxide Interfaces to Boost Voltages in Perovskite Solar Cells Caleb C. Boyd, R. Clayton Shallcross, Taylor Moot, Ross Kerner, Luca Bertoluzzi, Arthur Onno, Shalinee

Understanding Wavelength-Dependent Synergies …

Solar powered redox cells (SPRCs) are promising for large-scale and long-term storage of solar-energy, particularly when coupled with redox flow batteries (RFBs). While efforts have primarily focused on heterostructure …

Counter electrodes in dye-sensitized solar cells

This new generation of PV technologies includes dye-sensitized solar cells, perovskite solar cells, organic/polymer solar cells, quantum dot solar cells, etc. Though of lower efficiency than Si-based solar cells and the thin film cells, the third generation cells claim low processing costs and minor environmental impact which elicit intensive research and …

Overcoming Redox Reactions at Perovskite-Nickel Oxide Interfaces to Boost Voltages in Perovskite Solar Cells

Nickel oxide (NiOx) hole transport layers (HTLs) are desirable contacts for perovskite solar cells because they are low cost, stable, and readily scalable; however, they result in lower open-circuit voltages as compared with organic HTLs. We identify the cause of this as a redox reaction between NiOx and perovskite precursors. By manipulating the perovskite …

The Effect of Redox Reactions on the Stability of …

In this Review, we focus on the ubiquitous redox reactions in perovskite solar cells (PSCs), reveal the reasons behind …

Binary redox electrolytes used in dye-sensitized solar cells

Fast dye-regeneration and slow charge recombination are prerequisites for selecting superior redox couples of electrolytes to obtain highly efficient dye-sensitized solar cells (DSSCs). Although the ubiquitous combination of the I − /I 3 − redox couple demonstrates high power conversion efficiency (PCE), it suffers from several limitations …

Probing the stoichiometry dependent catalytic activity of nickel selenide counter electrodes in the redox reaction …

Nickel selenide (NixSey) systems have received much attention in recent years as potential low cost counter electrodes (CEs) in dye sensitized solar cells (DSSCs). Their electrocatalytic activities are comparable to that of the conventional platinum CE. Despite their achievements, the effect of stoichiometry on the

The Effect of Redox Reactions on the Stability of Perovskite Solar Cells …

Request PDF | The Effect of Redox Reactions on the Stability of Perovskite Solar Cells | Organic–inorganic hybrid perovskites have attracted tremendous attention in the photovoltaic industry ...

Accelerated Redox Reactions Enable Stable Tin‐Lead Mixed Perovskite Solar Cells …

Request PDF | Accelerated Redox Reactions Enable Stable Tin‐Lead Mixed Perovskite Solar Cells | The facile oxidation of Sn2+ to Sn4+ poses an inherent challenge that limits the efficiency and ...

Solved The redox reaction for production of pure …

The redox reaction for production of pure silicon for use in solar cells is shown below. 2Mg(s) + SiCl4(l) — 2MgCl2(1) + Si(s) What is the oxidation state of silicon in silicon tetrachloride (SiCla)? Select one: a. +4 b. +6 O c. …

Bi‐Directional Modification to Quench Detrimental Redox Reactions and Minimize Interfacial Energy Offset for NiOX/Perovskite‐Based Solar Cells ...

The quality of the buried heterojunction of nickel oxide (NiO X)/perovskite is crucial for efficient charge carrier extraction and minimizing interfacial non-radiative recombination in inverted perovskite solar cells (PSCs).However, NiO X has limitations as a hole transport layer (HTL) due to energy level mismatch, low conduction, and undesirable …

Surface redox engineering of vacuum-deposited NiOx for top …

State-of-the-art perovskite solar cells (PSCs) have glaringly entered the huge photovoltaic arena representing the most promising solar technology. The rapidly …

Fundamentals of redox regulation in biology | Nature Reviews Molecular Cell …

Oxidation–reduction (redox) reactions denote electron transfer reactions between chemical species. They serve as a basis of life processes, from the capture of solar energy in oxygen-generating ...

Overcoming Redox Reactions at Perovskite-Nickel Oxide Interfaces to Boost Voltages in Perovskite Solar Cells

Nickel oxide (NiO x) hole transport layers (HTLs) are desirable contacts for perovskite photovoltaics because they are low cost, stable, and readily scalable; however, they deliver lower open-circuit voltages (V OC s) compared to organic HTLs. Here, we characterize ...

Breaking the reaction chain | Nature Energy

Wide band gap perovskite solar cells suffer from halide segregation, which hampers their use in tandem solar cells. Now, researchers develop an additive with redox and defect passivating ...

Overcoming Redox Reactions at Perovskite-Nickel Oxide …

Overcoming Redox Reactions at Perovskite-Nickel Oxide Interfaces to Boost Voltages in Perovskite Solar Cells. Nickel oxide (NiOx) hole transport layers (HTLs) are desirable …

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