Effect of an optimal oxide layer on the efficiency of graphene‐silicon Schottky junction solar cell

Aftab, Sikandar; Iqbal, Muhammad Zahir; Alam, Shahid; Alzaid, Meshal

doi:10.1002/er.6962

Cited by 4 publications

(4 citation statements)

References 48 publications

(83 reference statements)

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“…Figure d shows the EQE (100%) as a function of the wavelength at a fixed intensity for different lights. The power conversion efficiency (η) of bulk PV device is calculated at power of 90.4 Wcm –2 by using the following relations: Fill Factor = FF = I m V m / I SC V OC and P C E = η = V OC J SC / P Laser × F F × 100 …”

Section: Resultsmentioning

confidence: 99%

Bulk Photovoltaic Effect in Two-Dimensional Distorted MoTe₂

Aftab,

Shehzad,

Salman Ajmal

et al. 2023

ACS Nano

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In future solar cell technologies, the thermodynamic Shockley-Queisser limit for solar-to-current conversion in traditional p−n junctions could potentially be overcome with a bulk photovoltaic effect by creating an inversion broken symmetry in piezoelectric or ferroelectric materials. Here, we unveiled mechanical distortioninduced bulk photovoltaic behavior in a two-dimensional (2D) material, MoTe 2 , caused by the phase transition and broken inversion symmetry in MoTe 2 . The phase transition from single-crystalline semiconducting 2H-MoTe 2 to semimetallic 1T′-MoTe 2 was confirmed using X-ray photoelectron spectroscopy (XPS). We used a micrometerscale system to measure the absorption of energy, which reduced from 800 to 63 meV during phase transformation from hexagonal to distorted octahedral and revealed a smaller bandgap semimetallic behavior. Experimentally, a large bulk photovoltaic response is anticipated with the maximum photovoltage V OC = 16 mV and a positive signal of the I SC = 60 μA (400 nm, 90.4 Wcm −2 ) in the absence of an external electric field. The maximum values of both R and EQE were found to be 98 mAW −1 and 30%, respectively. Our findings are distinctive features of the photocurrent responses caused by in-plane polarity and its potential from a wide pool of established TMD-based nanomaterials and a cutting-edge approach to optimize the efficiency in converting photons-to-electricity for power harvesting optoelectronics devices.

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Section: Resultsmentioning

confidence: 99%

Bulk Photovoltaic Effect in Two-Dimensional Distorted MoTe₂

Aftab,

Shehzad,

Salman Ajmal

et al. 2023

ACS Nano

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“…In addition, we did a comparison study of previously reported research ,− ,,,− with our work on Gr/Si solar cells as shown in Figure e. Compared to the previous studies, η was boosted in this research with doping and passivation.…”

Section: Resultsmentioning

confidence: 99%

Enhanced and Passivated Co-doping Effect of Organic Molecule and Bromine on Graphene/HfO₂/Silicon Metal–Insulator–Semiconductor (MIS) Schottky Junction Solar Cells

Kadam

Kim

Rehman

et al. 2022

ACS Appl. Energy Mater.

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Graphene (Gr) has shown a significant role in photovoltaic applications due to its exclusive properties. In this study, we established a facile approach to fabricate p-Gr/HfO2/n-silicon, a metal–insulator–semiconductor (MIS) Schottky junction solar cell. Nevertheless, the poor work function of Gr and high-density defect states at the Gr/Si interface obstruct the efficiency of solar cells. To avoid this problem, the optimal thickness of the interfacial layer (HfO2) is employed, which circumvents the recombination process at the Gr/Si interface. Additionally, to boost the Schottky barrier height and Gr’s work function, a combination of p-type co-doping of organic molecule 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) and Br is studied. Therefore, a higher work function aims to encourage the built-in potential, which ultimately improves the open-circuit voltage and current density and deteriorates the series resistance of solar cells. Hence, a unique combination of dopants resulted in improved efficiency of up to 12.31%. Moreover, devices with double layer (MoO3/HfO2) passivation have been enabled to provide outstanding stability for over 180 days. The combined effect of p-type co-doping and double layer passivation developed a solar cell having a significant efficiency of 14.01%. Thus, this work intends to show a promising, high-performance and stable MIS Schottky junction solar cell for massive commercialization of photovoltaic devices.

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“…As a result, there has been a substantial increase in the abundance of work conducted on G/S SCs recently. [53][54][55][56][57] Owing to its physical/chemical/mechanical features, graphene-based heterojunction SCs exhibited an good efficiency (18.5%) when combined with GaAs structure. 58 Aer achieving positive results in research and development trials, a feasible manufacturing process for small-scale commercial production of thin-lm and dye-sensitized photosupercapacitors using graphene has been effectively developed and implemented.…”

Section: Emergence Of Graphene/si In Solar Cells and Photovoltaicsmentioning

confidence: 99%

“…As a result, there has been a substantial increase in the abundance of work conducted on G/S SCs recently. 53–57…”

Section: Emergence Of Graphene/si In Solar Cells and Photovoltaicsmentioning

confidence: 99%

Advances in solar energy harvesting integrated by van der Waals graphene heterojunctions

Le,

Mai,

Iqbal

et al. 2023

RSC Adv.

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Effect of an optimal oxide layer on the efficiency of graphene‐silicon Schottky junction solar cell

Cited by 4 publications

References 48 publications

Bulk Photovoltaic Effect in Two-Dimensional Distorted MoTe₂

Bulk Photovoltaic Effect in Two-Dimensional Distorted MoTe₂

Enhanced and Passivated Co-doping Effect of Organic Molecule and Bromine on Graphene/HfO₂/Silicon Metal–Insulator–Semiconductor (MIS) Schottky Junction Solar Cells

Advances in solar energy harvesting integrated by van der Waals graphene heterojunctions

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Effect of an optimal oxide layer on the efficiency of graphene‐silicon Schottky junction solar cell

Cited by 4 publications

References 48 publications

Bulk Photovoltaic Effect in Two-Dimensional Distorted MoTe2

Bulk Photovoltaic Effect in Two-Dimensional Distorted MoTe2

Enhanced and Passivated Co-doping Effect of Organic Molecule and Bromine on Graphene/HfO2/Silicon Metal–Insulator–Semiconductor (MIS) Schottky Junction Solar Cells

Advances in solar energy harvesting integrated by van der Waals graphene heterojunctions

Contact Info

Product

Resources

About

Bulk Photovoltaic Effect in Two-Dimensional Distorted MoTe₂

Bulk Photovoltaic Effect in Two-Dimensional Distorted MoTe₂

Enhanced and Passivated Co-doping Effect of Organic Molecule and Bromine on Graphene/HfO₂/Silicon Metal–Insulator–Semiconductor (MIS) Schottky Junction Solar Cells