Aerosol-assisted chemical vapour deposition of α-Fe2O3 nanoflowers for photoelectrochemical water splitting

Arzaee, Nurul Affiqah; Noh, Mohamad Firdaus Mohamad; Halim, Azhar Abdul; Rahim, M.; Safaei, Javad; Aadenan, Amin; Nasir, Sharifah Nurain Syed; Ismail, Aznan Fazli; Teridi, Mohd Asri Mat

doi:10.1016/j.ceramint.2019.05.219

Cited by 57 publications

(17 citation statements)

References 44 publications

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“…The enhancement of the photoelectrochemical performance observed here confirms that γ‐radiation is beneficial for improving the opto‐electrical properties of g‐C 3 N 4 . This observation could be ascribed to the change in structural properties and chemical bonding of g‐C 3 N 4 upon exposure to γ‐radiation which in turn leads to enhanced light absorption, effective charge separation, and suppressed charge recombination within the γ‐radiated g‐C 3 N 4 photoanode 28,35 …”

Section: Resultsmentioning

confidence: 99%

Improving the stability and efficiency of polymer solar cells by γ‐radiated graphitic carbon nitride

Mumthas

Noh

Arzaee

et al. 2021

Intl J of Energy Research

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Graphitic carbon nitride (g-C 3 N 4 ) is a potential additive that can alter the polymer solar cells (PSC) performance. Hereby, we report a novel strategy by applying γ-radiated g-C 3 N 4 as additive into bulk heterojunction polymer solar cell (BHJ-PSC). The incorporation of γ-radiated g-C 3 N 4 into the active layer P3HT:PC 61 BM augments the efficiency of BHJ-PSC by more than half with respect to the standard undoped device counterpart. The increased performance of γ-radiated g-C 3 N 4 -doped BHJ-PSC is related to increased surface roughness, higher crystallinity, greater optical absorption of the polymer layer and improved charge transfer/recombination dynamics within the device. The optimized BHJ-PSC containing γ-radiated g-C 3 N 4 without encapsulation reaches 2.4% power conversion efficiency (PCE) and the device also retains 60% of the initial PCE even after exposure to high humidity condition (relative humidity 40%-70%) for 30 days. This suggests that γ-radiated g-C 3 N 4 is capable of preventing moisture and oxygen-induced degradation of P3HT:PC 61 BM. The γ-radiated g-C 3 N 4 additive is also employed in PBDTTT-C:PCBM polymer system which demonstrates the champion PCE of 2.9%. The present work not only provides an effective strategy for simultaneously enhancing the efficiency and stability of BHJ-PSC, but also opens up a new horizon for radiation technology and additive engineering.

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Section: Resultsmentioning

confidence: 99%

Improving the stability and efficiency of polymer solar cells by γ‐radiated graphitic carbon nitride

Mumthas

Noh

Arzaee

et al. 2021

Intl J of Energy Research

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“…Both bare NiO and perovskite‐sensitized NiO films demonstrate higher light absorption upon increasing the deposition time of the NiO photocathode layer. This could be ascribed to 1) the thicker NiO film which corresponds to an improved mesoporous structure, leading to a greater light scattering effect, and 2) the larger surface area of the labyrinthine NiO network that enhances the loading of CH 3 NH 3 PbI 3 on the NiO electrodes . We evaluated the effect of changing the NiO deposition time on the solar cells’ performance by carrying out current–voltage ( I–V ) measurements at 1000 W m −2 AM 1.5G simulated sunlight and the related IPCE measurement.…”

Section: Resultsmentioning

confidence: 99%

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

Alessa

Noh

Mumthas

et al. 2020

Physica Status Solidi (a)

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The efficiency and photocurrent density reported for p-type-sensitized solar cells up to now are still lagging behind that of the n-type counterparts, limiting the successful development of p-n tandem cells. To circumvent this issue, NiO thin film is fabricated by the aerosol-assisted chemical vapor deposition (AACVD) technique and used in p-type solar cells. A systematic study is conducted to comprehend the correlation between NiO thickness and the power conversion efficiency (PCE) of liquid-state NiO-based sensitized solar cells. By carefully designing the cell components, this type of device demonstrates the highest photocurrent density ( J sc ) exceeding 18 mA cm À2 when using iodine/triiodide as the redox shuttle matching the one produced by the TiO 2 counterpart. This is accomplished by 1) using the AACVD technique for the one-step deposition of compact and mesoporous NiO electrodes, 2) optimizing the thickness of the NiO layer through controlling the deposition time, and 3) adopting methylammonium lead iodide (CH 3 NH 3 PbI 3 ) as a light harvester prepared via a sequential deposition method.

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“…SEM and TEM studies revealed that the nanoflower structure was formed by the stacking of nanoflakes. 128 The electrodeposition method was used to deposit a nanostructured α-Fe 2 O 3 thin film. The thin film showed a photocurrent density of 0.67 mA cm −2 at 1.23 V versus the reversible hydrogen electrode (RHE) under standard illumination conditions.…”

Section: Oxide Semiconductor For Pec Water Splittingmentioning

confidence: 99%

Multifunctional materials for photo-electrochemical water splitting

et al. 2022

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Aerosol-assisted chemical vapour deposition of α-Fe2O3 nanoflowers for photoelectrochemical water splitting

Cited by 57 publications

References 44 publications

Improving the stability and efficiency of polymer solar cells by γ‐radiated graphitic carbon nitride

Improving the stability and efficiency of polymer solar cells by γ‐radiated graphitic carbon nitride

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

Multifunctional materials for photo-electrochemical water splitting

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