Enhancing the photovoltaic performance of GaAs/graphene Schottky junction solar cells by interfacial modification with self assembled alkyl thiol monolayer

Lei, Wen; Gao, Fangliang; Yu, Yuefeng; Xu, Zhenzhu; Liu, Zhikun; Gao, Peng; Zhang, Shuguang; Li, Guoqiang

doi:10.1039/c8ta04490b

Cited by 18 publications

(10 citation statements)

References 48 publications

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“…As a result, the loss of PCE is within 3% of the original PCE (absolutely from 1.45 to 1.40%) during 3000 h (Figure b), suggesting higher stability than Gr-based semiconductor solar cells (Table ). ,− This result can be explained that the PCE of the TETA-Gr/LaVO 3 cell is almost constant because the TETA molecule with a high-molecular weight and a functional group of ethylene amine in bonding to Gr is very stable at air …”

Section: Resultsmentioning

confidence: 97%

Semitransparent Solar Cells Employing n-Type Graphene on LaVO₃

2023

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To effectively utilize solar energy, semitransparent solar cells are essential in various fields such as building-integrated solar power generation and portable solar chargers. We report triethylenetetramine (TETA)-doped graphene (Gr) transparent conductive electrode (TCE)-based LaVO3 semitransparent solar cells. To optimize the Gr TCE, we varied the TETA molar concentration (n D) from 0.1 to 0.3 mM. TETA-doped Gr (TETA-Gr)/LaVO3 semitransparent solar cells exhibit the highest 1.45% efficiency and 62% average visible transmittance at n D = 0.2 mM. These results indicate that the TETA-Gr/LaVO3 structure not only harvests solar energy in the ultraviolet–visible region but also exhibits translucency, thanks to the thin film. Thanks to its translucent properties, we improved the power conversion efficiency (PCE) to 1.99% by adding an Al reflective mirror to the semitransparent cells. Finally, the device’s PCE loss is only within 3% for 3000 h in air, suggesting good durability.

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Section: Resultsmentioning

confidence: 97%

Semitransparent Solar Cells Employing n-Type Graphene on LaVO₃

2023

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“…19,29 Another possibility, shown on thiol modified gold substrates, is for nanoshaving to be performed in situ, in a solution containing a different thiol, resulting in substitutional grafting, a process called "nanografting". 30 The pristine graphite surface can also be decorated noncovalently with a large variety of self-assembled supramolecular networks (SAMNs) and is used for modifying charge transport properties, 31−33 templation, 34,35 passivation, 36 host−guest chemistry, 37,38 and beyond. Improving the control over their assembly properties and deposition is consequently an important field of research.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The pristine graphite surface can also be decorated noncovalently with a large variety of self-assembled supramolecular networks (SAMNs) and is used for modifying charge transport properties, − templation, , passivation, host–guest chemistry, , and beyond. Improving the control over their assembly properties and deposition is consequently an important field of research.…”

Section: Introductionmentioning

confidence: 99%

AFM Nanoshaving of Covalently Modified Graphite for Studying Molecular Self-Assembly under Lateral Nanoconfinement

et al. 2021

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We report an atomic force microscopy (AFM) based nanoshaving approach on graphite, covalently functionalized using diazonium chemistry. Upon removal of the covalently bound layer on top of graphite, two different types of breakdown products are observed under ambient conditions, depending on the diazonium salt used. Due to the nanoshaving procedure, the strained graphite lattice is restored to its pristine sp 2 nature, as confirmed by Raman microscopy. A general strategy for nanoshaving is provided under ambient and liquid conditions, optimizing the key parameters, and aimed toward retaining the structural integrity of the AFM probe, allowing subsequent imaging. Finally, the self-assembly of n-pentacontane was studied inside such in situ nanoshaved areas to illustrate the potential of AFM based nanoshaving to investigate self-assembly processes occurring under 2D lateral confinement.

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“…As III-V cells have suitable properties acting as top cells, a series of strategies have been investigated to fabricate III-V/Si tandem cells including direct growth, [1][2][3] wafer bonding, [4,5] and mechanical stacking. [6,7] Although the growth techniques based on GaAs substrate have been intensively investigated, [8][9][10] due to the mismatched lattice constants and thermal expansion coefficients between III-V and Si, the efficiency of III-V/Si MJSCs by the direct growth approach is still limited to 24.3%. [11] The surface-activated wafer bonding method can overcome the lattice mismatch issue and has achieved an efficiency of 34.1%.…”

Section: Introductionmentioning

confidence: 99%

Improving Performance of Bifacial‐Grid III–V Solar Cells Bonded on Glass by Selective Contact Annealing

Wang

Liu

et al. 2021

Solar RRL

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Selective contact annealing is developed to improve the performance of bifacial‐grid III–V top cells bonded on glass by epoxy resin for Si‐based tandem solar cells. The annealing method can minimize the damage to the bonding layer and is compatible with the industrial evaporation technique for contact fabrication. The improvement of the front contact quality by selective annealing treatments is demonstrated through optical and electrical characterization which shows a significantly enhanced III–V device performance. Furthermore, a fitting model is established to reveal the mechanism underlying the performance improvement through the reduction of contact resistances and the bad contact area. Herein, an effective annealing approach to fabricate high‐quality metal–semiconductor contacts for devices with poor thermal resistivity is demonstrated, which can be used in polymer‐bonded top cells in Si‐based tandem solar cells and other flexible optoelectronic devices on polymer substrates.

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Enhancing the photovoltaic performance of GaAs/graphene Schottky junction solar cells by interfacial modification with self assembled alkyl thiol monolayer

Abstract: We demonstrate the fabrication of highly-efficient GaAs/graphene Schottky junction solar cells by interfacial modification with a self-assembled alkyl thiol monolayer.

Cited by 18 publications

References 48 publications

Semitransparent Solar Cells Employing n-Type Graphene on LaVO₃

Semitransparent Solar Cells Employing n-Type Graphene on LaVO₃

AFM Nanoshaving of Covalently Modified Graphite for Studying Molecular Self-Assembly under Lateral Nanoconfinement

Improving Performance of Bifacial‐Grid III–V Solar Cells Bonded on Glass by Selective Contact Annealing

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Enhancing the photovoltaic performance of GaAs/graphene Schottky junction solar cells by interfacial modification with self assembled alkyl thiol monolayer

Abstract: We demonstrate the fabrication of highly-efficient GaAs/graphene Schottky junction solar cells by interfacial modification with a self-assembled alkyl thiol monolayer.

Cited by 18 publications

References 48 publications

Semitransparent Solar Cells Employing n-Type Graphene on LaVO3

Semitransparent Solar Cells Employing n-Type Graphene on LaVO3

AFM Nanoshaving of Covalently Modified Graphite for Studying Molecular Self-Assembly under Lateral Nanoconfinement

Improving Performance of Bifacial‐Grid III–V Solar Cells Bonded on Glass by Selective Contact Annealing

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Product

Resources

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Semitransparent Solar Cells Employing n-Type Graphene on LaVO₃

Semitransparent Solar Cells Employing n-Type Graphene on LaVO₃