Effect of deposition time on photoelectrochemical performance of chemically grown Bi2Se3-sensitized TiO2 nanostructure solar cells

Baviskar, Vijay S.; Salunkhe, Dipak B.; Patil, Girish P.; Jadhav, Chandradip D.; Nerkar, D. M.; Baviskar, Prashant K.; Patil, R. S.

doi:10.1007/s10854-020-04300-y

Cited by 10 publications

(3 citation statements)

References 34 publications

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“…8(b) shows the energy level diagram of the device. [56][57][58] According to the photoluminescence spectrum in Fig. 5(d), there are defect states at the vacuum energy levels of À3.89 and À4.06 eV, respectively.…”

Section: Resultsmentioning

confidence: 99%

A self-powered high performance UV-Vis-NIR broadband photodetector based on β-Bi₂O₃ nanoparticles through defect engineering

et al. 2022

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Section: Resultsmentioning

confidence: 99%

A self-powered high performance UV-Vis-NIR broadband photodetector based on β-Bi₂O₃ nanoparticles through defect engineering

et al. 2022

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“…Therefore, the photocurrent increased as the increase of conversion efficiency, which is consistent with the test results of photocurrent density (Figure 3a). TiO2/Bi2Se3 composite is a type-II band gap arrangement, which means that the edge of the conduction band of TiO2 is located between the CB and the VB of Bi2Se3 [37].…”

Section: Resultsmentioning

confidence: 99%

TiO2 Nanoparticles Anchoring on Two-Dimensional Bi2Se3 Nanosheet As An Enhanced Visible Light Catalyst

Guo

Qiao

et al. 2021

Preprint

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Titanium dioxide (TiO2) has been widely studied in the field of photocatalysis. However, the development of TiO2 was limited by the photoresponse only in the ultraviolet region and the rapid recombination of photogenerated electron-hole pairs. In this work, TiO2 and two-dimensional (2D) bismuth selenide (Bi2Se3) hybrid nanosheets (TiO2/Bi2Se3 HNs) have been prepared via a simple ultrasonic route. X-ray diffraction pattern and Raman spectra were carried out to confirm that as-prepared samples were pure and well crystalized. Besides, the microstructure characterization proves that 2D Bi2Se3 nanosheets have high specific surface area and can serve as a stable platform to construct the intimate interaction with TiO2. Furthermore, photoelectrochemical (PEC) measurements demonstrate that the TiO2/Bi2Se3 HNs exhibit excellent photocatalytic performance under visible light, which were much better than pure TiO2 and Bi2Se3. More importantly, the photocurrent density was quite stable and only dropped by 10% after 125 cycles. In summary, the improved photocatalytic activity is due to the unique characteristic of 2D Bi2Se3 nanosheets, such as maximized reaction sites and good electrical conductivity, and the positive coupling effect of the TiO2/Bi2Se3 heterojunction. This study indicates that TiO2/Bi2Se3 HNs photocatalysts have excellent potential for photocatalytic application.

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“…In addition, based on two semiconductors with unequal band gaps by physical contact each other, construction of heterogeneous photocatalyst systems is also a set of effective schemes to achieve highly efficient solar energy conversion to chemical energy [28][29][30][31][32]. The narrow band gap semiconductor is introduced into the host semiconductor, which can broaden the practical application of solar spectrum [33][34][35]. Through proper choice of both the semiconductor with respect to energy level alignment and CB/VB edge position, a type-II or Z-scheme heterostructure can be further constructed to improve the transport performance of photogenerated carrier [22,29,36,37].…”

Section: Introductionmentioning

confidence: 99%

Controlled Synthesis and Photoelectrochemical Performance Enhancement of Cu2−xSe Decorated Porous Au/Bi2Se3 Z-Scheme Plasmonic Photoelectrocatalyst

Chen

et al. 2022

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In this paper, uniform Cu2−xSe-modified Au/Bi2Se3 hybrid nanoparticles with porous shells have been prepared through a cation exchange method. Bi2Se3/Cu2−xSe Z-scheme heterojunction is introduced onto Au nanocube by replacing Bi3+ with Cu2+. Owing to the effective coupling between Au core and semiconductor shells, Au/Bi2Se3/Cu2−xSe hybrids present a broad and strong plasmon resonance absorption in the visible band. More intriguingly, the carrier lifetime of Au/Bi2Se3/Cu2−xSe hybrid photoelectrodes can be further tailored with corresponding Cu2−xSe content. Through parameter optimization, 0.1-Au/Bi2Se3/Cu2−xSe electrode exhibits the longest electron lifetime (86.03 ms) among all the parallel samples, and corresponding photoelectrochemical performance enhancement is also observed in the tests. Compared with that of pure Bi2Se3 (0.016% at 0.90 V vs. RHE) and Au/Bi2Se3 (0.02% at 0.90 V vs. RHE) nanoparticles, the maximum photoconversion efficiency of porous Au/Bi2Se3/Cu2−xSe hybrid photoanodes increased by 5.87 and 4.50 times under simulated sunlight illumination, attributing to the cooperation of Z-scheme heterojunction and plasmon resonance enhancement effects. All the results indicate that Au/Bi2Se3/Cu2−xSe porous hybrids combine eco-friendliness with excellent sunlight harvesting capability and effectively inhibiting the charge recombination, which provide a new idea for efficient solar-driven water splitting.

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Effect of deposition time on photoelectrochemical performance of chemically grown Bi2Se3-sensitized TiO2 nanostructure solar cells

Cited by 10 publications

References 34 publications

A self-powered high performance UV-Vis-NIR broadband photodetector based on β-Bi₂O₃ nanoparticles through defect engineering

A self-powered high performance UV-Vis-NIR broadband photodetector based on β-Bi₂O₃ nanoparticles through defect engineering

TiO2 Nanoparticles Anchoring on Two-Dimensional Bi2Se3 Nanosheet As An Enhanced Visible Light Catalyst

Controlled Synthesis and Photoelectrochemical Performance Enhancement of Cu2−xSe Decorated Porous Au/Bi2Se3 Z-Scheme Plasmonic Photoelectrocatalyst

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Effect of deposition time on photoelectrochemical performance of chemically grown Bi2Se3-sensitized TiO2 nanostructure solar cells

Cited by 10 publications

References 34 publications

A self-powered high performance UV-Vis-NIR broadband photodetector based on β-Bi2O3 nanoparticles through defect engineering

A self-powered high performance UV-Vis-NIR broadband photodetector based on β-Bi2O3 nanoparticles through defect engineering

TiO2&nbsp;Nanoparticles Anchoring on Two-Dimensional Bi2Se3&nbsp;Nanosheet As An Enhanced Visible Light Catalyst

Controlled Synthesis and Photoelectrochemical Performance Enhancement of Cu2−xSe Decorated Porous Au/Bi2Se3 Z-Scheme Plasmonic Photoelectrocatalyst

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Product

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A self-powered high performance UV-Vis-NIR broadband photodetector based on β-Bi₂O₃ nanoparticles through defect engineering

A self-powered high performance UV-Vis-NIR broadband photodetector based on β-Bi₂O₃ nanoparticles through defect engineering

TiO2 Nanoparticles Anchoring on Two-Dimensional Bi2Se3 Nanosheet As An Enhanced Visible Light Catalyst