Role of absorber and buffer layer thickness on Cu2O/TiO2 heterojunction solar cells

Mathur, Arpit Swarup; Singh, Prem Pratap; Upadhyay, Sachin; Yadav, Neetika; Singh, Karanveer; Singh, D. P.; Singh, B. P.

doi:10.1016/j.solener.2022.01.047

Cited by 18 publications

(8 citation statements)

References 32 publications

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“…The other peaks around 500 to 550 nm are assigned to the transverse surface plasmon resonance of gold nanorods. [ 1,17 ] In the case of 15 μL, the maximum absorbance wavelength was visualized at around 850 nm (figure . It was also observed the morphology changed from sphere to rod‐like when the volume of seed colloids decreased from 50 to 15 μL.…”

Section: Resultsmentioning

confidence: 99%

Controlled synthesis of gold nanorods and integrated with titanium dioxide for enhancing visible light‐driven antioxidant activity

Nguyen,

Van Vu

et al. 2023

Vietnam Journal of Chemistry

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In this work, gold nanorods (AuNRs) with well‐controlled aspect ratios were prepared using a modified seed‐growth method and covered by TiO2 layers through the hydrothermal reaction to improve stability. Integrating TiO2 with plasmonic rod‐like gold nanoparticles could enhance their photo activity by the local surface plasmon resonance (LSPR) effect. AuNRs aspect ratios were controlled by varying the amount of seed solution, reducing agents, surfactant (CTAB), and titanium (IV) but oxide. The optical properties of formed AuNRs can be tuned in the spectral range from 400 to 900 nm by adjusting the ratio between seed solution and reducing agent concentration. Besides, the absorption of the UV‐light function of TiO2 and the antioxidant properties of gold nanoparticles were also integrated to prepare a kind of multifunctional material. The obtained AuNRs/TiO2 were then determined by ultraviolet‐visible spectroscopy (UV‐Vis), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and high‐resolution transmission electron microscopy (HR‐TEM), selected area electron diffraction (SAED), and energy‐dispersive X‐ray spectroscopy (EDS). Microscopic images (TEM, SEM) revealed that the average particle size of the AuNRs decorated in the titanium dioxide ranged from 20 to 60 nm, depending on the experimental parameters. Furthermore, HRTEM, EDS, and SAED results provided more precise information insight into the formed gold nanocrystals. The AuNRs/TiO2 exhibited superior antioxidant activity by reducing free 2,2‐diphenyl‐1‐picrylhydrazyl (DPPH) radicals at different concentrations. The results indicated that AuNRs/TiO2 improves antioxidant and optical absorption activities. The antioxidation effect was proved more excellent than solely used of spherical, rod‐liked gold nanoparticles or TiO2 nanoparticles. This novel design of AuNRs/TiO2 may open a new avenue for facilitating multifunctional nanoparticles in cosmetic applications.

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Section: Resultsmentioning

confidence: 99%

Controlled synthesis of gold nanorods and integrated with titanium dioxide for enhancing visible light‐driven antioxidant activity

Nguyen,

Van Vu

et al. 2023

Vietnam Journal of Chemistry

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“…Due to the inherent defects and vacancies in the material, an excessively thick absorber layer material can hinder the diffusion movement of charge carriers under the concentration gradient and may extend the transmission path of charge carriers [57], even exceeding the diffusion length of charge carriers. This can prevent charge carriers from reaching the interface smoothly and causing recombination [58], resulting in a decrease in the current density inside the absorber layer and the strength of the built-in electric field. In addition, too thin the thickness of the absorber layer is also undesirable, which will dilute the light absorption efficiency of the absorber layer, directly lead to the reduction of the number of excitons, and thereby significantly declining the number of charge carriers.…”

Section: Analysis and Optimizationmentioning

confidence: 99%

Design and optimization of Cs₂SnI₆ based inorganic perovskite solar cell model: numerical simulation

Chen,

Qiao

2024

Phys. Scr.

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To overcome the drawbacks of high lead toxicity and poor corrosion resistance of lead-based perovskite solar cells (PSCs), and to compensate for the poor air stability of Sn2+ compound-based perovskite, Cs2SnI6 (Sn4+ compound) is selected as the absorber for the PSC in this study. Using FTO/ETL/Cs2SnI6/HTL/Au as the model, the high-performance non-toxic inorganic PSC structure is explored through theoretical simulation and calculation by SCAPS-1D. The conduction band offsets (CBO) and valence band offsets (VBO) of commonly used electron transport layer materials (ETMs), hole transport layer materials (HTMs), and Cs2SnI6 are calculated based on electron affinity potential (χ) and bandgap (Eg). Then, by analyzing the pn junction composed of ETL and HTL and the bandgap structure at the n-i, i-p interfaces, the most matching n-i-p planar heterojunction model, FTO/IGZO/Cs2SnI6/Cu2BaSnS4/Au, was selected. Finally, by analyzing and adjusting the material thickness, defect density of each layer, operation temperature, the optimal performance of PSC was determined to be 30.39% power conversion efficiency (PCE), 1.27 V open circuit voltage (Voc), 28.46 mA/cm2 short circuit current (Jsc), and 84.02% fill factor (FF). A new and more efficient PSC is proposed in this study, providing some terrific clues for finding high-quality alternatives to lead-based PSCs. The judgment method proposed in this study regarding the theoretical performance of PSCs can also provide some ideas for related experimental research.

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“…For modeling and optimization of the LNMO-based PSCs, SCAPS 1D software (3.3.09 version) has been used. Modeling of PSCs through SCAPS is dependent on the solution of Poisson's and continuity equations as displayed in the following equations (2)-( 4), respectively [20,21].…”

Section: Theoretical and Computational Details Of Simulated Cellsmentioning

confidence: 99%

Minimization of carrier recombination in La₂NiMnO₆ double perovskite solar cells by optimizing defects and band offsets

Yadav

Khare

2023

Phys. Scr.

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In the present work, an extensive study has been carried out on the parameters that govern the non-radiative recombination losses associated with the absorber double perovskite material. Four different device configurations have been proposed by incorporating different electron transport layers (ETL) namely tungsten disulfide (WS2), tungsten trioxide (WO3), zinc selenide (ZnSe), and strontium titanate (STO) with La2NiMnO6 (LNMO) double perovskite material as an active layer and cuprous oxide (Cu2O) as a hole transport layer (HTL). In this investigation, the role of band offsets in the collection, transportation, and recombination of charge carriers has been examined in detail. Further, the impact of thickness and the defect positions i.e. shallow defects and deep defects on the photovoltaic (PV) parameters of the cells has been thoroughly elucidated. For the proper collection of charge carriers, the ideal barrier height between HTL and back contact (C, Ni, Ag, and Au) at various valence band maximum (VBM) levels has also been investigated. Interestingly, the results of the present simulation reveal that the WS2-based device with configuration FTO/WS2/LNMO/Cu2O/Au shows the highest PCE of 24.08% after optimization. The findings and interpretation of this work demonstrate that La2NiMnO6 an eco-friendly and non-toxic material can be used to produce high-efficiency perovskite devices.

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Role of absorber and buffer layer thickness on Cu2O/TiO2 heterojunction solar cells

Cited by 18 publications

References 32 publications

Controlled synthesis of gold nanorods and integrated with titanium dioxide for enhancing visible light‐driven antioxidant activity

Controlled synthesis of gold nanorods and integrated with titanium dioxide for enhancing visible light‐driven antioxidant activity

Design and optimization of Cs₂SnI₆ based inorganic perovskite solar cell model: numerical simulation

Minimization of carrier recombination in La₂NiMnO₆ double perovskite solar cells by optimizing defects and band offsets

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Role of absorber and buffer layer thickness on Cu2O/TiO2 heterojunction solar cells

Cited by 18 publications

References 32 publications

Controlled synthesis of gold nanorods and integrated with titanium dioxide for enhancing visible light‐driven antioxidant activity

Controlled synthesis of gold nanorods and integrated with titanium dioxide for enhancing visible light‐driven antioxidant activity

Design and optimization of Cs2SnI6 based inorganic perovskite solar cell model: numerical simulation

Minimization of carrier recombination in La2NiMnO6 double perovskite solar cells by optimizing defects and band offsets

Contact Info

Product

Resources

About

Design and optimization of Cs₂SnI₆ based inorganic perovskite solar cell model: numerical simulation

Minimization of carrier recombination in La₂NiMnO₆ double perovskite solar cells by optimizing defects and band offsets