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Cao D, Wang A, Yu X, Yin H, Zhang J, Mi B, Gao Z. Room-temperature preparation of TiO 2/graphene composite photoanodes for efficient dye-sensitized solar cells. J Colloid Interface Sci 2021; 586:326-334. [PMID: 33160629 DOI: 10.1016/j.jcis.2020.10.096] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/22/2020] [Accepted: 10/23/2020] [Indexed: 11/26/2022]
Abstract
Semi-transparent TiO2/graphene photoanodes are prepared at room temperature via an electrophoretic deposition method followed by compression and applied in dye-sensitized solar cells (DSSCs). Compression enhances the power conversion efficiency (PCE) of a DSSC, which constitutes up 18.4 times improvement compared to the uncompressed device. Incorporating graphene into the compressed film further improves the PCE by 28.8%. Simultaneously, compressing and graphene incorporating can greatly increase the film's transmittance at long wavelengths, benefiting to the use of DSSCs as front unit in tandem solar cells. Scanning electron microscopy, porosity measurements, electrochemical impedance spectroscopy and open circuit voltage decay are performed to investigate the mechanisms. It is demonstrated that compressing a film can reduce the porosity and improve the inter-particle connections, which accounts for the increased light transmittance and enhanced PCE. The incorporated graphene can provide extra charge carrier pathway due to its excellent charge transport properties, as well as protect TiO2 nanostructure by preventing film cracking upon pressing due to its good flexibility, thus increases PCE to 6.75%, which, to our best knowledge, is the highest value among DSSCs with room-temperature prepared photoanodes.
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Affiliation(s)
- Dapeng Cao
- Key Laboratory for Organic Electronics & Information Displays (KLOEID), Jiangsu Engineering Centre for Plate Displays & Solid State Lighting, and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China; Key Laboratory of Flexible Electronics, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), School of Material Science and Engineering, Nanjing University of Posts & Telecommunications, Nanjing, Jiangsu 210023, China.
| | - Anchen Wang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID), Jiangsu Engineering Centre for Plate Displays & Solid State Lighting, and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China
| | - Xiaohui Yu
- Key Laboratory for Organic Electronics & Information Displays (KLOEID), Jiangsu Engineering Centre for Plate Displays & Solid State Lighting, and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China
| | - Huiming Yin
- Key Laboratory for Organic Electronics & Information Displays (KLOEID), Jiangsu Engineering Centre for Plate Displays & Solid State Lighting, and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China
| | - Jingbo Zhang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID), Jiangsu Engineering Centre for Plate Displays & Solid State Lighting, and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China
| | - Baoxiu Mi
- Key Laboratory for Organic Electronics & Information Displays (KLOEID), Jiangsu Engineering Centre for Plate Displays & Solid State Lighting, and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China.
| | - Zhiqiang Gao
- Key Laboratory of Flexible Electronics, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), School of Material Science and Engineering, Nanjing University of Posts & Telecommunications, Nanjing, Jiangsu 210023, China.
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Maurya IC, Senapati S, Singh S, Srivastava P, Maiti P, Bahadur L. Effect of Particle Size on the Performance of TiO2
Based Dye-Sensitized Solar Cells. ChemistrySelect 2018. [DOI: 10.1002/slct.201801745] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Ishwar Chandra Maurya
- Department of Chemistry; Institute of Science; Banaras Hindu University; Varanasi-221005 INDIA
| | - Sudipta Senapati
- School of Materials Science and Technology; Indian Institute of Technology (Banaras Hindu University); Varanasi-221005 INDIA
| | - Shalini Singh
- Department of Chemistry; Institute of Science; Banaras Hindu University; Varanasi-221005 INDIA
| | - Pankaj Srivastava
- Department of Chemistry; Institute of Science; Banaras Hindu University; Varanasi-221005 INDIA
| | - Pralay Maiti
- School of Materials Science and Technology; Indian Institute of Technology (Banaras Hindu University); Varanasi-221005 INDIA
| | - Lal Bahadur
- Department of Chemistry; Institute of Science; Banaras Hindu University; Varanasi-221005 INDIA
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Sun H, Guo LY, Li JS, Bai JP, Su F, Zhang LC, Sang XJ, You WS, Zhu ZM. Two New Armtype Polyoxometalates Grafted on Titanium Dioxide Films: Towards Enhanced Photoelectrochemical Performance. CHEMSUSCHEM 2016; 9:1125-1133. [PMID: 27098260 DOI: 10.1002/cssc.201600131] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 02/29/2016] [Indexed: 06/05/2023]
Abstract
Two new carboxyethyltin-functionalized polyoxometalates (POMs) were successfully obtained and confirmed with physicochemical and spectroscopic methods including X-ray crystallography. The lowest unoccupied molecular orbitals of both compounds are higher in energy than that of TiO2 , and the optical band gaps of these compounds are smaller than that of TiO2 . Grafting them onto a TiO2 film created two kinds of novel photoanode materials that showed significantly enhanced photovoltaic and photocurrent responses, as well as improved photoelectrooxidation activities for methanol relative to that shown by a single TiO2 film. Further, P2 W15 -Co-SnR produced the largest photocurrent by exploring the photoelectric activities of a series of carboxyethyltin POM derivatives. This work provides new insight into the photoelectrochemical functionalization of POM-based organic-inorganic hybrids.
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Affiliation(s)
- Hang Sun
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China
| | - Li-Ying Guo
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China
| | - Jian-Sheng Li
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China
| | - Jian-Ping Bai
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China
| | - Fang Su
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China
- Center of Analytical Test, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China
| | - Lan-Cui Zhang
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China.
| | - Xiao-Jing Sang
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China.
- Center of Analytical Test, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China.
| | - Wan-Sheng You
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China
| | - Zai-Ming Zhu
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China.
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4
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Lee CS, Lim JY, Chi WS, Kim JH. Facile, Nonhydrothermal, Mass-Producible Synthesis of Mesoporous TiO 2 Spheres for Dye-Sensitized Solar Cells. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.05.054] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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5
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Yu YY, Lei BX, Xie ML, Huang GL, Sun W, Sun ZF. A hierarchical homogeneous core–shell structure of TiO2 hollow microspheres for high efficiency dye-sensitized solar cells. ADV POWDER TECHNOL 2015. [DOI: 10.1016/j.apt.2015.04.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Jeon H, Lee CS, Patel R, Kim JH. Well-organized meso-macroporous TiO2/SiO2 film derived from amphiphilic rubbery comb copolymer. ACS APPLIED MATERIALS & INTERFACES 2015; 7:7767-7775. [PMID: 25805232 DOI: 10.1021/acsami.5b01010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report the facile synthesis of a well-organized meso-macroporous TiO2/SiO2 thin film with high porosity and good interconnectivity from a binary mixture (i.e., titania precursor and polymer template). Our process is based on self-assembly of the amphiphilic rubbery comb copolymer, poly(dimethylsiloxane)-g-poly(oxyethylene methacrylate) (PDMS-g-POEM) with titanium tetraisopropoxide (TTIP). SiO2 is self-provided by thermal oxidation of PDMS chains during calcination under air. The selective, preferential interaction between TTIP and the hydrophilic POEM chains was responsible for the formation of well-organized TiO2/SiO2 films, as supported by transmission electron microscopy, scanning electron microscopy, X-ray photospectroscopy, and X-ray diffraction analyses. We investigated in detail the effect of precursor content, solvent type, and polymer concentration on thin film morphology. Photodegradation of methyl orange by the well-organized meso-macroporous TiO2/SiO2 film was greater than that of a dense TiO2 film prepared without PDMS-g-POEM as well as a SiO2-etched TiO2 film. These results indicate that the well-organized structure and SiO2 doping of the TiO2 film play a pivotal role in enhancing its photocatalytic properties.
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Affiliation(s)
- Harim Jeon
- †Department of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, South Korea
| | - Chang Soo Lee
- †Department of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, South Korea
| | | | - Jong Hak Kim
- †Department of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, South Korea
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Park JT, Lee CS, Kim JH. High performance electrocatalyst consisting of CoS nanoparticles on an organized mesoporous SnO2 film: its use as a counter electrode for Pt-free, dye-sensitized solar cells. NANOSCALE 2015; 7:670-678. [PMID: 25429695 DOI: 10.1039/c4nr05779a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
High energy conversion efficiencies of 6.6% and 7.5% are demonstrated in solid and liquid states, Pt-free, dye-sensitized solar cells (DSSCs), respectively, based on CoS nanoparticles on an organized mesoporous SnO2 (om-SnO2) counter electrode. These results correspond to improvements of 14% and 9%, respectively, compared to a conventional Pt counter electrode and are among the highest values reported for Pt-free DSSCs. The om-SnO2 layer plays a pivotal role as a platform to deposit a large amount of highly electrocatalytically active CoS nanoparticles via a facile solvothermal reaction. The om-SnO2 platform with a high porosity, larger pores, and good interconnectivity is derived from a poly(vinyl chloride)-g-poly(oxyethylene methacrylate) (PVC-g-POEM) graft copolymer template, which provides not only improved interaction sites for the formation of CoS nanoparticles but also enhanced electron transport. The structural, morphological, chemical, and electrochemical properties of CoS on the om-SnO2 platform are investigated using field emission-scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV) measurements. The performance enhancement results from the excellent electron transport at the fluorine-doped tin oxide (FTO)/counter electrode/electrolyte interface, reduced resistance at the FTO/CoS interface, and better catalytic reduction at the counter electrode/electrolyte interface.
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Affiliation(s)
- Jung Tae Park
- Department of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, South Korea.
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Zhang D, Yin H, Li Z, Zhou Y, Yu T, Liu J, Zou Z. Controllable electrophoresis deposition of TiO2 mesoporous spheres onto Ti threads as photoanodes for fiber-shaped dye-sensitized solar cells. RSC Adv 2015. [DOI: 10.1039/c5ra10351g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The electrophoresis deposition technique was applied to fabricate fiber-shaped dye-sensitized solar cells (FDSSC) by depositing TiO2 mesoporous sphere onto a Ti wire as a photoanode. The total conversion efficiency of the FDSSC achieves 3.8%.
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Affiliation(s)
- Dandan Zhang
- National Laboratory of Solid State Microstructures
- School of Physics
- Eco-Materials and Renewable Energy Research Center (ERERC)
- Nanjing 210093
- P. R. China
| | - Hexing Yin
- School of Chemistry & Chemical Engineering
- Nanjing Universtiy
- Nanjing 210093
- P. R. China
| | - Zhengdao Li
- Chemistry and Pharmaceutical Engineering College
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Yong Zhou
- National Laboratory of Solid State Microstructures
- School of Physics
- Eco-Materials and Renewable Energy Research Center (ERERC)
- Nanjing 210093
- P. R. China
| | - Tao Yu
- National Laboratory of Solid State Microstructures
- School of Physics
- Eco-Materials and Renewable Energy Research Center (ERERC)
- Nanjing 210093
- P. R. China
| | - Jianguo Liu
- National Laboratory of Solid State Microstructures
- School of Physics
- Eco-Materials and Renewable Energy Research Center (ERERC)
- Nanjing 210093
- P. R. China
| | - Zhigang Zou
- National Laboratory of Solid State Microstructures
- School of Physics
- Eco-Materials and Renewable Energy Research Center (ERERC)
- Nanjing 210093
- P. R. China
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