A novel, PbS quantum dot-Sensitized solar cell structure with TiO2-fMWCNTS nano-composite filled meso-porous anatase TiO2 photoanode

Latif, Hamid; Ashraf, Saima; Rafique, Muhammad; Imtiaz, Ayesha; Sattar, Abdul; Zaheer, S.; Shabbir, Syeda Ammara; Usman, Arslan

doi:10.1016/j.solener.2020.03.114

Cited by 19 publications

(4 citation statements)

References 40 publications

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“…The study explored the differences in properties among these three films and their performance variations after assembly into QDSSCs. 28 It demonstrated that enhancing the specific surface area of the photoanode and controlling the internal resistance of the cell can significantly improve the short-circuit current density (J sc ), open-circuit voltage (V oc ), fill factor (FF), and power conversion efficiency (PCE) of solar cells. (Please refer to Figure S1 in the Supporting Information for visual representations of the three types of thin films.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Next, a comprehensive characterization of the TA TiO 2 @MWCNT film was conducted in comparison with that of the A TiO 2 NPs film and the TA TiO 2 film. The study explored the differences in properties among these three films and their performance variations after assembly into QDSSCs . It demonstrated that enhancing the specific surface area of the photoanode and controlling the internal resistance of the cell can significantly improve the short-circuit current density ( J sc ), open-circuit voltage ( V oc ), fill factor (FF), and power conversion efficiency (PCE) of solar cells.…”

Section: Resultsmentioning

confidence: 99%

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Improved Performance of QDSSCs Can Be Achieved by Constructing a Transparent Anatase TiO₂@MWCNT Photoanode Based on the Bionic Mountain Lotus

Jiang,

Dai,

Xie

et al. 2024

ACS Appl. Mater. Interfaces

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In this research, the structural characteristics of the mountain holly leaf were emulated. It was observed that after the initially uneven surface of the petals is filled with infiltrated water, it exhibits a distinctive transparent beauty after rainfall. Furthermore, the presence of leaf veins enhances the structural strength of the petals and facilitates nutrient transport. Inspired by previous studies on double-layer spin-coated films, we further developed and designed the TA TiO 2 @MWCNT photocathode thin film. This innovative film incorporates multiwalled carbon nanotubes (MWCNT) into a previously established TA TiO 2 photocathode thin film. The inclusion of MWCNT results in the formation of a three-dimensional highway structure, where MWCNT intertwines within the TA TiO 2 film. Under the operational state of immersion in the electrolyte, it maintains a level of transparency similar to that of the TA TiO 2 photoanode thin film. The high-temperature sintering process results in the oxidation and depletion of MWCNTs on the surface of the film, leaving behind uniformly dispersed concave defects, thereby greatly enhancing the specific surface area. The findings demonstrate that the optoelectrode of high transparency and high specific surface area, TA TiO 2 @MWCNT, comprehensively enhances the performance of the solar cells. The transparent QDSSC surpasses its counterparts for the first time, achieving a power conversion efficiency (PCE) of 6.335%. This sets the stage for new materials and innovative approaches in the field of solar cells and other titanium dioxide film-related areas.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Improved Performance of QDSSCs Can Be Achieved by Constructing a Transparent Anatase TiO₂@MWCNT Photoanode Based on the Bionic Mountain Lotus

Jiang,

Dai,

Xie

et al. 2024

ACS Appl. Mater. Interfaces

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“…Here, we prepared an anatase TiO 2 film with a smooth and transparent surface. Compared with the anatase TiO 2 nanoparticle (NP) film, the transparent anatase TiO 2 film has extremely high visible light transmittance, and lower resistance and carrier recombination rate . The transfer of photogenerated charge carriers no longer needs to cross the interface barrier between TiO 2 NPs, which reduces the recombination rate of photogenerated charge carriers and shortens the transport distance of photogenerated charge carriers. , The internal resistance of the assembled QDSSC is more suitable.…”

Section: Introductionmentioning

confidence: 99%

Interface Regulation and Properties of Transparent Anatase TiO₂ Photoanode Quantum Dot-Sensitized Solar Cells

Jiang,

Dai,

Xie

et al. 2023

ACS Appl. Nano Mater.

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In this work, we propose a strategy that is different from the traditional technology of increasing the specific area of the TiO 2 film to improve the carrying capacity of QDs in QDSSCs. Transparent anatase TiO 2 films are prepared by improving the optical transmittance of the photoanode TiO 2 film so that the attached QDs can capture more photons and improve the efficiency of utilizing QDs. This QDSSC preparation technology sacrifices part of QDs loading but improves the utilization efficiency of QDs. At the same time, the transparent bulk TiO 2 film decreases the transmission distance of photogenerated charge carriers, reduces the cross-interface transport, optimizes the transmission path, and reduces the carrier capture composite rate compared with the TiO 2 particle film. Therefore, it not only increases the V oc , FF, and PCE of QDSSCs to 0.628 V, 54.7, and 6.166%, respectively, but also has greater transparency. It meets the demand for solar cell transparency in practical applications and has a wider range of applications and better aesthetics. The mechanism simulation and theoretical analysis of photothermal conversion and electromagnetic mechanism show that the barrier of carrier transfer in bulk transparent anatase TiO 2 is lower than the physical barrier between anatase TiO 2 NPs. The advantages of the anatase transparent TiO 2 film in the process of photogenerated charge carrier transmission are verified. It provides an idea for the development of QDSSCs. It also brings the technology of transparent TiO 2 film to related fields.

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“…Shockley-Quiesser limit is the maximum PCE for the p-n solar cell at 1.5 air mass (AM), and the bandgap is 1.34 eV, where the loss only is radiative recombination. In reality, the maximum PCE does not reach to Shockley-Queisser limit due to the high amount of light reflected from the surface [20,21]. Figure 1 shows the pathways of the energy loss through the homogeneous junction.…”

Section: Introductionmentioning

confidence: 99%

Performance Improvement of Graded Bandgap Solar Cell via Optimization of Energy Levels Alignment in Si Quantum Dot, TiO2 Nanoparticles, and Porous Si

Almomani

Ahmed²,

Rashid³

et al. 2022

Photonics

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Charge carriers’ generation from zinc includes silicon quantum dots (ZnSiQDs) layer sandwiched in-between porous silicon (PSi) and titania nanoparticles (TiO2NPs) layer-based solar cell is an efficient way to improve the cell’s performance. In this view, ZnSiQDs layer with various QDs sizes have been inserted, separating the PSi and TiO2NPs layers to achieve some graded bandgap quantum dot solar cells (GBQDSCs). In this process, ZnSiQDs of mean diameter 1.22 nm is first prepared via the top-down method. Next, ZnSiQDs have been re-grown using the bottom-up approach to get various mean diameters of 2.1, 2.7 and 7.4 nm. TiO2NPs of mean diameter in the range of 3.2 to 33.94 nm have been achieved via thermal annealing. The influence of different ZnSiQDs sizes on the designed GBGQDSCs performance has been determined. The proposed cell attains a short circuit current of 40 mA/cm2 and an efficiency of 4.9%. It has been shown that the cell performance enhances by optimizing the energy levels alignment in the PSi, ZnSiQDs, TiO2NPs layers.

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A novel, PbS quantum dot-Sensitized solar cell structure with TiO2-fMWCNTS nano-composite filled meso-porous anatase TiO2 photoanode

Cited by 19 publications

References 40 publications

Improved Performance of QDSSCs Can Be Achieved by Constructing a Transparent Anatase TiO₂@MWCNT Photoanode Based on the Bionic Mountain Lotus

Improved Performance of QDSSCs Can Be Achieved by Constructing a Transparent Anatase TiO₂@MWCNT Photoanode Based on the Bionic Mountain Lotus

Interface Regulation and Properties of Transparent Anatase TiO₂ Photoanode Quantum Dot-Sensitized Solar Cells

Performance Improvement of Graded Bandgap Solar Cell via Optimization of Energy Levels Alignment in Si Quantum Dot, TiO2 Nanoparticles, and Porous Si

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A novel, PbS quantum dot-Sensitized solar cell structure with TiO2-fMWCNTS nano-composite filled meso-porous anatase TiO2 photoanode

Cited by 19 publications

References 40 publications

Improved Performance of QDSSCs Can Be Achieved by Constructing a Transparent Anatase TiO2@MWCNT Photoanode Based on the Bionic Mountain Lotus

Improved Performance of QDSSCs Can Be Achieved by Constructing a Transparent Anatase TiO2@MWCNT Photoanode Based on the Bionic Mountain Lotus

Interface Regulation and Properties of Transparent Anatase TiO2 Photoanode Quantum Dot-Sensitized Solar Cells

Performance Improvement of Graded Bandgap Solar Cell via Optimization of Energy Levels Alignment in Si Quantum Dot, TiO2 Nanoparticles, and Porous Si

Contact Info

Product

Resources

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Improved Performance of QDSSCs Can Be Achieved by Constructing a Transparent Anatase TiO₂@MWCNT Photoanode Based on the Bionic Mountain Lotus

Improved Performance of QDSSCs Can Be Achieved by Constructing a Transparent Anatase TiO₂@MWCNT Photoanode Based on the Bionic Mountain Lotus

Interface Regulation and Properties of Transparent Anatase TiO₂ Photoanode Quantum Dot-Sensitized Solar Cells