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Khazaei M, Mohammadi MR, Li Y. Dye-sensitized solar cells based on anatase- and brookite-TiO 2: enhancing performance through optimization of phase composition, morphology and device architecture. NANOTECHNOLOGY 2024; 35:385602. [PMID: 38906118 DOI: 10.1088/1361-6528/ad5aa1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Accepted: 06/21/2024] [Indexed: 06/23/2024]
Abstract
Herein, we demonstrate an optimization of dye-sensitized solar cells (DSSCs) through the development of single-layer and double-layer configurations. Focusing on the incorporation of brookite and anatase phases in varying ratios, the study aims to determine the optimal composition for enhanced photovoltaic performance. The active layer, composed of anatase- and brookite-TiO2nanoparticles, is further modified with a scattering layer comprising a mixture of anatase nanoparticles and brookite-TiO2in the form of nanocube or rice-like particles. The synthesis of TiO2nanostructures with various morphologies and phase compositions and their subsequent application in single-layer and double-layer DSSCs are presented. The results highlight the superior light-harvesting capabilities achieved through the strategic incorporation of brookite phase into the anatase phase, emphasizing the importance of optimizing the anatase: brookite ratio. The single-layer DSSCs exhibit a peak efficiency of 8.73%, achieved with a composition of 30 wt.% brookite and 70 wt.% anatase at a thickness of 15μms. In the context of double-layer DSSCs, the combined optimization of the active layer composition, scattering layer morphology, and utilization of anatase nanoparticles leads to a remarkable efficiency of 9.18%. These findings underscore the critical role of composition and morphology in enhancing the performance of DSSCs, showcasing the potential for brookite-based DSSCs in solar energy conversion.
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Affiliation(s)
- Mobina Khazaei
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi St., Tehran, Iran
| | - M R Mohammadi
- Department of Chemical Engineering and Waterloo Institute for Nanotechnology (WIN), University of Waterloo, 200 University Ave West, Waterloo, Ontario N2L 3G1, Canada
| | - Yuning Li
- Department of Chemical Engineering and Waterloo Institute for Nanotechnology (WIN), University of Waterloo, 200 University Ave West, Waterloo, Ontario N2L 3G1, Canada
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Liu T, Yang C, Song P, Ma F, Li Y. Study of the microscopic mechanism of stepwise charge injection in co-sensitive DSSCs in the framework of a D-π-A dye and chlorophyll. Phys Chem Chem Phys 2024; 26:3424-3440. [PMID: 38205563 DOI: 10.1039/d3cp03664b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
The newly synthesized dye molecules TY6 and CXC22 were selected to explain the influence of anthracene and acetylene groups on the power conversion efficiency (PCE) of the molecules at the microscopic level. Theoretical simulation was carried out to understand the properties of the two molecules, including frontier molecular orbitals, absorption spectra, light absorption efficiency, intramolecular charge transfer (ICT), dye regeneration, I-V prediction, etc. The results suggest that for CXC22, adding an anthracene and acetylene group in the conjugate bridge greatly enhances the molecule's absorption wavelength and molar extinction coefficient; CXC22 also has significant advantages in the intramolecular charge transfer and comparatively better dye regeneration and electron injection. These parameters cause CXC22 to have a higher PCE. Subsequently, CXC22 and the chlorophyll molecule (CHL7) were selected for co-sensitization to regulate performance. The stable structure in the co-sensitization configuration was screened, and the absorption spectrum characteristics and charge transfer mechanisms were revealed for the co-sensitization system. The designed evaluation model predicted that the PCE of CO1 (the cosensitive system of CXC22 and TY6 in H-H configuration is referred to as CO1) could reach 16.78%. This work provides an idea for developing an efficient dye-sensitized solar cell system.
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Affiliation(s)
- Tao Liu
- College of Science, Northeast Forestry University, 150040 Harbin, China.
| | - Canpu Yang
- College of Science, Northeast Forestry University, 150040 Harbin, China.
| | - Peng Song
- Department of Physics, Liaoning University, Shenyang 110036, Liaoning, China.
| | - Fengcai Ma
- Department of Physics, Liaoning University, Shenyang 110036, Liaoning, China.
| | - Yuanzuo Li
- College of Science, Northeast Forestry University, 150040 Harbin, China.
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Meenakshamma A, Mounika PM, Gurulakshmi M, Susmitha K, Haranath D, Goswami L, Gupta G, Someshwar P, Raghavender M. Voltage- and Power-Conversion Performance of Bi-functional ZrO 2 : Er 3+ / Yb 3+ Assisted and Co-sensitized Dye Sensitized Solar Cells for Internet of Things Applications. Chemphyschem 2023; 24:e202300572. [PMID: 37596962 DOI: 10.1002/cphc.202300572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 08/18/2023] [Accepted: 08/18/2023] [Indexed: 08/21/2023]
Abstract
Giant power conversion efficiency is achieved by using bifunction ZrO2 : Er3+ /Yb3+ assisted co-sensitised dye-sensitized solar cells. The evolution of the crystalline structure and its microstructure are examined by X-ray diffraction, scanning electron microscopy studies. The bi-functional behaviour of ZrO2 : Er3+ /Yb3+ as upconversion, light scattering is confirmed by emission and diffused reflectance studies. The bi-function ZrO2 : Er3+ /Yb3+ (pH=3) assisted photoanode is co-sensitized by use of N719 dye, squaraine SPSQ2 dye and is sandwiched with Platinum based counter electrode. The fabricated DSSC exhibited a giant power conversion efficiency of 12.35 % with VOC of 0.71 V, JSC of 27.06 mA/cm2 , FF of 0.63. The results, which motivated the development of a small DSSC module, gave 6.21 % and is used to drive a tiny electronic motor in indoor and outdoor lighting conditions. Small-area DSSCs connected in series have found that a VOC of 4.52 V is sufficient to power up Internet of Things (IoT) devices.
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Affiliation(s)
| | | | | | | | - D Haranath
- Department of Physics, National Institute of Technology, Warangal, 506004, T.S., India
| | - Lalit Goswami
- Sensor Devices & Metrology, National Physical Laboratory, New Delhi, 110012, India
| | - Govind Gupta
- Sensor Devices & Metrology, National Physical Laboratory, New Delhi, 110012, India
| | - Pola Someshwar
- Department of Chemistry, Osmania University, Hyderabad, 500007, T.S., India
| | - Mitty Raghavender
- Department of Physics, Yogi Vemana University, Kadapa, 516005, A.P., India
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Alizadeh A, Shariatinia Z. Auspicious energy conversion performance of dye-sensitized solar cells based on Gd2O3-impregnated SmTiO3 perovskite/TiO2 nanocomposite photoelectrodes. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.142280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
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Design of hollow nanostructured photocatalysts for clean energy production. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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