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Current Nanomaterials


ISSN (Print): 2405-4615
ISSN (Online): 2405-4623

Research Article

Improved Photovoltaic Properties of Nano-Flake-Based Mesoporous Dip- SILAR Prepared BiOI Electrochemical Cell By Tuning Post-Annealing Treatment Time at 100°C

Author(s): Md. Matiur Rahman*, Shinya Kato and Tetsuo Soga

Volume 7, Issue 1, 2022

Published on: 11 August, 2021

Page: [57 - 64] Pages: 8

DOI: 10.2174/2405461506666210526150014

Price: $65


Background: This research article reports on the post-annealing treatment time effect on the dip-successive ionic layer adsorption and reaction (SILAR) prepared nano-flake-based mesoporous BiOI electrochemical cell's photovoltaic properties.

Objective: Our study clarifies that the post-annealing time has a great impact on the photovoltaic behavior and the nano-flake morphology.

Methods: At 100°C for 90 mins of post-annealing treatment conditions, the surface morphology converted into a connected uniform crystallized flaky structure, which improves the effective surface area and reduces the BiOI/electrolyte charge transfer resistance confirmed via electrochemical impedance spectroscopy (EIS) analysis. Therefore, the maximum photovoltaic properties (short-circuit current density, Jsc = 1.83mA/cm2, open-circuit voltage, Voc = 0.48V and efficiency = 0.28%) have been observed. However, without annealing and beyond 90 mins of post-annealing time, the film quality and crystallinity decreased as a consequence of photovoltaic properties degradation.

Results and Conclusion: Our investigation finding is that 90 mins is the optimal post-annealing treatment duration for the dip-SILAR prepared nano-flake-based mesoporous BiOI electrochemical photovoltaic cell at 100°C post-annealing temperature.

Keywords: Dip-SILAR, nano-flake, post-annealing treatment time, mesoporous BiOI, photovoltaic, electrochemical cell.

Graphical Abstract
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