Enhanced photocatalysis and photodetection using highly crystalline CZTS thin films optimized using stabilizers

Mudike, Ravi; Bheemaraju, Amarnath; Rasheed, Tabish; Singh, Neha; Dhage, Sanjay R.; Shivaramu, Prasanna D.; Rangappa, Dinesh

doi:10.1016/j.ceramint.2022.05.169

Cited by 14 publications

(8 citation statements)

References 46 publications

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“…Our prepared multi-stacked precursors 9LYS CZTS film shows a maximum photocurrent density of 82 μA cm −2 is much superior to the other CZTS reported in the literature. 13,54–57 These findings suggest that the multi-stacked-layer modification dramatically impacts the performance of the CZTS absorber from 3LYS to 9LYS.…”

Section: Resultsmentioning

confidence: 97%

Enhanced photoresponse of Cu₂ZnSnS₄ absorber thin films fabricated using multi-metallic stacked nanolayers

et al. 2023

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Section: Resultsmentioning

confidence: 97%

Enhanced photoresponse of Cu₂ZnSnS₄ absorber thin films fabricated using multi-metallic stacked nanolayers

et al. 2023

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“…The spectra at 337 cm −1 show the CZTS A/A 1 vibration mode corresponding to the breathing mode of sulfur in CZTS, and the peaks at 285 cm −1 and 369 cm −1 correspond to the B(LO)/E(LO) and B(LO)/B2(LO) modes in CZTS, respectively. [24][25][26][27][28] Therefore, diffraction peaks at 28.64-28.70°can be assigned to CZTS(112) because the Raman spectra of all samples with laser irradiation show A/A1 mode peaks at 337 cm −1 . Samples with laser irradiation in Ar and 5% H 2 S/Ar show peaks at 285 cm −1 and 369 cm −1 02SP16-2…”

Section: Crystallinity and Morphologymentioning

confidence: 99%

Cu₂ZnSnS₄ formation by laser annealing in controlled atmosphere

Shimamune,

Nagumo,

Jimbo

2024

Jpn. J. Appl. Phys.

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Laser annealing is an attractive process to form high- quality semiconductor films because of localized annealing area and short annealing time. In a previous study, a Cu2ZnSnS4 (CZTS) polycrystalline semiconductor film was realized using laser annealing in air as a light absorption layer for solar cells, although the crystallization was not sufficient in comparison with CZTS formed by the conventional thermal sulfurization process. In this study, we demonstrate a newly developed gas-atmosphere-controlled laser annealing system. A Cu-Zn-Sn-S-based precursor was formed, followed by laser annealing of the system. Laser annealing in air, Ar, and 5% H2S/Ar gas was performed to investigate the influence of the gas species on the crystallization of the precursor. A 5% H2S/Ar atmosphere promoted the crystallization of CZTS with the suppression of S desorption and Cu sulfide formation, while air and Ar atmospheres allowed the formation of Cu sulfide.

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“…This is primarily due to the entanglement of molecular chains and the random arrangement of the polymer backbone. Therefore, obtaining perylene polyimide photocatalysts with optimal crystalline structures and morphologies is challenging . Currently, advancements have been made in the polyimide synthesis process to enhance the alignment of the polyimide chain and improve its crystallinity.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, obtaining perylene polyimide photocatalysts with optimal crystalline structures and morphologies is challenging. 26 Currently, advancements have been made in the polyimide synthesis process to enhance the alignment of the polyimide chain and improve its crystallinity. These factors lead to anisotropic transport of photogenerated charges and an accelerated rate of combination of electron−hole pairs.…”

Section: Introductionmentioning

confidence: 99%

Modulation of the Perylene Polyimide Crystalline Structure and Oxygen Vacancy Contents for Enhanced Photocatalytic Performance

Fan,

Liu,

et al. 2024

Ind. Eng. Chem. Res.

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Perylene polyimide networks are currently one of the most promising metal-free photocatalysts due to their excellent electrical and optical tunability. However, the disordered aggregation state structure in perylene polyimide resulting from the traditional imidization process is detrimental to the separation and migration of the photogenerated charges, which in turn greatly hampers its photocatalytic activity. Herein, we report a facile approach to construct highly crystalline (∼98%) perylene polyimide photocatalysts via cascade reactions involving the assembly of perylenetetracarboxylic acid-melamine monomer salt crystals (PTA-MA), followed by solid-state imidization of the PTA-MA monomer salt. Meanwhile, oxygen vacancies (OVs) were introduced during the polycondensation of the PTA-MA monomer salts. By adjusting the polycondensation temperature, perylene polyimide photocatalysts (PTA-MA-Tn) with varying crystallinity and contents of OVs were obtained. Benefiting from its highly ordered structure and optimized OVs content, the as-prepared perylene polyimide photocatalyst (PTA-MA-200) obtains a suitable crystal structure and excellent photon-to-electron conversion efficiency and exhibits exceptional photoactivity in the photocatalytic valorization of benzylamines into imines. An approximately 10fold increase in the rate of benzylamine photocatalytic conversion was observed in comparison to PTA. This study paves the way for the development of highly crystalline polyimide photocatalysts and has the potential to enhance the understanding of the structure− activity correlation in the context of applying perylene polyimide photocatalysts in practical scenarios.

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Enhanced photocatalysis and photodetection using highly crystalline CZTS thin films optimized using stabilizers

Cited by 14 publications

References 46 publications

Enhanced photoresponse of Cu₂ZnSnS₄ absorber thin films fabricated using multi-metallic stacked nanolayers

Enhanced photoresponse of Cu₂ZnSnS₄ absorber thin films fabricated using multi-metallic stacked nanolayers

Cu₂ZnSnS₄ formation by laser annealing in controlled atmosphere

Modulation of the Perylene Polyimide Crystalline Structure and Oxygen Vacancy Contents for Enhanced Photocatalytic Performance

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Enhanced photocatalysis and photodetection using highly crystalline CZTS thin films optimized using stabilizers

Cited by 14 publications

References 46 publications

Enhanced photoresponse of Cu2ZnSnS4 absorber thin films fabricated using multi-metallic stacked nanolayers

Enhanced photoresponse of Cu2ZnSnS4 absorber thin films fabricated using multi-metallic stacked nanolayers

Cu2ZnSnS4 formation by laser annealing in controlled atmosphere

Modulation of the Perylene Polyimide Crystalline Structure and Oxygen Vacancy Contents for Enhanced Photocatalytic Performance

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Enhanced photoresponse of Cu₂ZnSnS₄ absorber thin films fabricated using multi-metallic stacked nanolayers

Enhanced photoresponse of Cu₂ZnSnS₄ absorber thin films fabricated using multi-metallic stacked nanolayers

Cu₂ZnSnS₄ formation by laser annealing in controlled atmosphere