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Kandasamy M, Selvaraj M, Alam MM, Maruthamuthu P, Murugesan S. Nano-silver incorporated amine functionalized graphene oxide titania nanotube composite: a promising DSSC photoanode. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2022.104205] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Van Le C, Nguyen MTT, Le NTT, Le HK, Bui TM, Ho DH, Le VH, Ho TTN, Pham TLC, Huynh LTN, Nguyen TH, Mai TP, Hoang NM, Nguyen HH. Rapidly Forming the Chemical Bond Titania–Carbon in Hybrid Composite TiO2/Reduced Graphene Oxide to Enhance the Efficiency of Dye-Sensitized Solar Cells. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2022. [DOI: 10.1007/s13369-021-05462-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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High performance of electrosprayed graphene oxide/TiO2/Ce-TiO2 photoanodes for photoelectrocatalytic inactivation of S. aureus. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.139203] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Makal P, Das D. Reduced Graphene Oxide-Laminated One-Dimensional TiO 2-Bronze Nanowire Composite: An Efficient Photoanode Material for Dye-Sensitized Solar Cells. ACS OMEGA 2021; 6:4362-4373. [PMID: 33623847 PMCID: PMC7893794 DOI: 10.1021/acsomega.0c05707] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 01/21/2021] [Indexed: 06/12/2023]
Abstract
A facile one-step hydrothermal method was developed to prepare reduced graphene oxide-laminated TiO2-bronze (TiO2-B) nanowire composites (TNWG), which contain two-dimensional graphene oxide nanosheets and TiO2-B nanowires. In the hydrothermal process, the functional groups of graphene oxide were reduced significantly. Dye-sensitized solar cells (DSSCs) were fabricated using TNWG as the photoanode material. The effects of different reduced graphene oxide contents in TNWG on the energy conversion efficiency of the dye-sensitized solar cells were investigated using J-V and incident photon-to-current conversion efficiency characteristics. DSSCs based on a TNWG hybrid photoanode with a reduced graphene oxide content of 8 wt % demonstrated an overall light-to-electricity conversion efficiency of 4.95%, accompanied by a short-circuit current density of 10.41 mA cm-2, an open-circuit voltage of 0.71 V, and a fill factor of 67%, which were much higher than those of DSSC made with a pure TiO2-B NW-based photoanode. The overall improvement in photovoltaic performance could be associated to the intense visible light absorption and enhanced dye adsorption because of the increased surface area of the composite, together with faster electron transport due to reduced carrier recombination.
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Parvizi T, Parsa JB, Farnood R. Highly-efficient degradation of organic pollutants and synchronous electricity generation in a photocatalytic fuel cell based on the catalytic reactions of hydroxyl and chlorine radicals. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.137753] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Abstract
TiO2 has been widely used as a photocatalyst and an electrode material toward the photodegradation of organic pollutants and electrochemical applications, respectively. However, the properties of TiO2 are not enough up to meet practical needs because of its intrinsic disadvantages such as a wide bandgap and low conductivity. Incorporation of carbon into the TiO2 lattice is a promising tool to overcome these limitations because carbon has metal-like conductivity, high separation efficiency of photogenerated electron/hole pairs, and strong visible-light absorption. This review would describe and discuss a variety of strategies to develop carbon-doped TiO2 with enhanced photoelectrochemical performances in environmental, energy, and catalytic fields. Emphasis is given to highlight current techniques and recent progress in C-doped TiO2-based materials. Meanwhile, how to tackle the challenges we are currently facing is also discussed. This understanding will allow the process to continue to evolve and provide facile and feasible techniques for the design and development of carbon-doped TiO2 materials.
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Low FW, Chin Hock G, Kashif M, Samsudin NA, Chau CF, Indah Utami AR, Aminul Islam M, Heah CY, Liew YM, Lai CW, Amin N, Tiong SK. Influence of Sputtering Temperature of TiO 2 Deposited onto Reduced Graphene Oxide Nanosheet as Efficient Photoanodes in Dye-Sensitized Solar Cells. Molecules 2020; 25:E4852. [PMID: 33096759 PMCID: PMC7587932 DOI: 10.3390/molecules25204852] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/11/2020] [Accepted: 10/12/2020] [Indexed: 11/24/2022] Open
Abstract
Renewable solar energy is the key target to reduce fossil fuel consumption, minimize global warming issues, and indirectly minimizes erratic weather patterns. Herein, the authors synthesized an ultrathin reduced graphene oxide (rGO) nanosheet with ~47 nm via an improved Hummer's method. The TiO2 was deposited by RF sputtering onto an rGO nanosheet with a variation of temperature to enhance the photogenerated electron or charge carrier mobility transport for the photoanode component. The morphology, topologies, element composition, crystallinity as well as dye-sensitized solar cells' (DSSCs) performance were determined accordingly. Based on the results, FTIR spectra revealed presence of Ti-O-C bonds in every rGO-TiO2 nanocomposite samples at 800 cm-1. Besides, XRD revealed that a broad peak of anatase TiO2 was detected at ~25.4° after incorporation with the rGO. Furthermore, it was discovered that sputtering temperature of 120 °C created a desired power conversion energy (PCE) of 7.27% based on the J-V plot. Further increase of the sputtering temperature to 160 °C and 200 °C led to excessive TiO2 growth on the rGO nanosheet, thus resulting in undesirable charge recombination formed at the photoanode in the DSSC device.
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Affiliation(s)
- Foo Wah Low
- Department of Electrical & Electronic Engineering, Lee Kong Chian Faculty of Engineering & Science, Universiti Tunku Abdul Rahman, Bandar Sungai Long, Kajang 43000, Selangor, Malaysia
- Institute of Sustainable Energy, Universiti Tenaga Nasional (The Energy University), Jalan IKRAM-UNITEN, Kajang 43000, Selangor, Malaysia; (N.A.S.); (M.A.I.); (N.A.); (S.K.T.)
| | - Goh Chin Hock
- Institute of Sustainable Energy, Universiti Tenaga Nasional (The Energy University), Jalan IKRAM-UNITEN, Kajang 43000, Selangor, Malaysia; (N.A.S.); (M.A.I.); (N.A.); (S.K.T.)
| | - Muhammad Kashif
- School of Electrical & Information Engineering, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China;
| | - Nurul Asma Samsudin
- Institute of Sustainable Energy, Universiti Tenaga Nasional (The Energy University), Jalan IKRAM-UNITEN, Kajang 43000, Selangor, Malaysia; (N.A.S.); (M.A.I.); (N.A.); (S.K.T.)
| | - Chien Fat Chau
- College of Engineering, Universiti Tenaga Nasional (The Energy University), Jalan IKRAM-UNITEN, Kajang 43000, Selangor, Malaysia
| | | | - Mohammad Aminul Islam
- Institute of Sustainable Energy, Universiti Tenaga Nasional (The Energy University), Jalan IKRAM-UNITEN, Kajang 43000, Selangor, Malaysia; (N.A.S.); (M.A.I.); (N.A.); (S.K.T.)
- Department of Electrical Engineering, University of Malaya, Jalan Universiti, Kuala Lumpur 50603, Selangor, Malaysia
| | - Cheng Yong Heah
- Faculty of Engineering Technology, Universiti Malaysia Perlis (UniMAP), Sungai Chuchuh, Padang Besar, Kangar 02100, Perlis, Malaysia;
- Center of Excellence Geopolymer and Green Technology (CeGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis (UniMAP), Kangar 01000, Perlis, Malaysia;
| | - Yun Ming Liew
- Center of Excellence Geopolymer and Green Technology (CeGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis (UniMAP), Kangar 01000, Perlis, Malaysia;
| | - Chin Wei Lai
- Nanotechnology and Catalysis Research Centre (NANOCAT), Level 3, Block A, Institute for Advanced Studies (IAS), University of Malaya (UM), Kuala Lumpur 50603, Selangor, Malaysia;
| | - Nowshad Amin
- Institute of Sustainable Energy, Universiti Tenaga Nasional (The Energy University), Jalan IKRAM-UNITEN, Kajang 43000, Selangor, Malaysia; (N.A.S.); (M.A.I.); (N.A.); (S.K.T.)
| | - Sieh Kiong Tiong
- Institute of Sustainable Energy, Universiti Tenaga Nasional (The Energy University), Jalan IKRAM-UNITEN, Kajang 43000, Selangor, Malaysia; (N.A.S.); (M.A.I.); (N.A.); (S.K.T.)
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Li H, Song W, Cui X, Li Y, Hou B, Zhang X, Wang Y, Cheng L, Zhang P, Li J. AgInS 2 and graphene co-sensitized TiO 2 photoanodes for photocathodic protection of Q235 carbon steel under visible light. NANOTECHNOLOGY 2020; 31:305704. [PMID: 32240986 DOI: 10.1088/1361-6528/ab85eb] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
AgInS2 nanoparticle and graphene nanosheet co-sensitized anatase TiO2 nanotube array films were fabricated by a combination of hydrothermal reaction and electrochemical anodization on titanium sheets. The results showed that the co-sensitization of AgInS2 nanoparticles and graphene nanosheets extended the photoresponse of TiO2 nanotubes into the visible-light region, and improved the photogenerated charge separation and transfer capability. The photocurrent density of the AgInS2/graphene/TiO2 composites (about 4.0 mA cm-2) was 20 times that of bare TiO2 (only 0.2 mA cm-2) under visible-light illumination. The potential negative shift value of AgInS2/graphene/TiO2 composites was up to 0.68 V versus saturated calomel electrode. The AgInS2/graphene/TiO2 composites can provide Q235 carbon steel with highly efficient photocathodic protection under visible-light illumination.
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Affiliation(s)
- Hong Li
- State Key Laboratory of Bio-fibers and Eco-textiles, College of Mechanical and Electrical Engineering, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, People's Republic of China
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Balis N, Zaky AA, Athanasekou C, Silva AMT, Sakellis E, Vasilopoulou M, Stergiopoulos T, Kontos AG, Falaras P. Investigating the role of reduced graphene oxide as a universal additive in planar perovskite solar cells. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112141] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Preparation of Multicycle GO/TiO2 Composite Photocatalyst and Study on Degradation of Methylene Blue Synthetic Wastewater. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9163282] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A series of composite photocatalysts were prepared by using graphene oxide (GO) prepared by modified Hummers method and TiO2 hydrogel prepared by using butyl titanate as raw materials. The composite photocatalyst was characterized through scanning electron microscope(SEM), x ray diffraction (XRD), and Raman spectroscopy, and the degradation effect of pure TiO2 and composite photocatalyst on methylene blue (MB) dye wastewater under different experimental conditions was studied. The results showed that TiO2 in composite photocatalyst was mainly anatase phase and its photocatalytic activity was better than pure TiO2. When the addition of GO reached 15 wt%, the photocatalytic activity was the highest. When 200 mg composite photocatalyst was added to 200 mL synthetic wastewater with a concentration of 10 mg/L and an initial pH of about 8, the degradation rate could reach 95.8% after 2.5 h. It is presumed that the photogenerated charges of GO/TiO2 composite photocatalyst may directly destroy the luminescent groups in the MB molecule and thus decolorize the wastewater, and no other new luminescent groups are generated during the treatment.
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Ghartavol HM, Mohammadi MR, Afshar A, Li Y. On the assessment of incorporation of CNT-TiO 2 core-shell structures into nanoparticle TiO 2 photoanodes in dye-sensitized solar cells. Photochem Photobiol Sci 2019; 18:1840-1850. [PMID: 31204420 DOI: 10.1039/c9pp00100j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we report dye-sensitized solar cells (DSCs) based on conventional nanocrystalline TiO2 photoanodes decorated with one-dimensional (1D) CNT-TiO2 core-shell structures (CTH). The core-shell nanotubes are synthesized by a simple sol-gel template-assisted method via in situ deposition of TiO2 on the surface of non-covalently functionalized CNTs. The core-shell nanotubes are well characterized by various techniques. Field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) images show that formation of the TiO2 shell on the surface of the CNT core follows a layer or Frank-van der Merwe growth mode, resulting in a highly uniform interface with excellent charge transfer from the TiO2 conduction band into the CNTs. The thickness and crystal structure of the TiO2 shell can be tailored by controlling the processing parameters. X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy verify that CNTs have no surface defects and are well preserved using the employed method and the subsequent heat treatment in air, respectively. UV-vis spectroscopy and photoluminescence spectroscopy reveal an extension to visible regions with an increase in overall intensity and a significant reduction in charge recombination due to a shift of the Fermi level toward positive potentials. We find an increase by up to 37% in the DSC device's power conversion efficiency by incorporating the CNT-TiO2 core-shell nanotubes into the nanoparticle TiO2 photoanode due to the charge recombination reduction and electron injection enhancement.
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Affiliation(s)
- H M Ghartavol
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi Street, Tehran, Iran
| | - M R Mohammadi
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi Street, Tehran, Iran and Department of Chemical Engineering and Waterloo Institute for Nanotechnology (WIN), University of Waterloo, 200 University Avenue West, Waterloo, Canada.
| | - A Afshar
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi Street, Tehran, Iran
| | - Y Li
- Department of Chemical Engineering and Waterloo Institute for Nanotechnology (WIN), University of Waterloo, 200 University Avenue West, Waterloo, Canada.
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Liu R, Qiu R, Zou T, Liu C, Chen J, Dai Q, Zhang S, Zhou H. SnO 2-rGO nanocomposite as an efficient electron transport layer for stable perovskite solar cells on AZO substrate. NANOTECHNOLOGY 2019; 30:075202. [PMID: 30524051 DOI: 10.1088/1361-6528/aaf2ad] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Electron transport layer (ETL) plays an important role in realizing efficient and stable perovskite solar cells (PSCs). There are continuous efforts in developing new types of low cost ETLs with improved conductivity and compatibility with perovskite and the conducting electrode. Here, in order to obtain high efficient and stable PSCs on ZnO:Al (AZO) substrate, reduced graphene oxide (rGO) is incorporated into SnO2 nanoparticles to form composite ETL. For planar PSC on AZO substrates, SnO2-rGO with a low incorporation ratio of 3 wt% rGO significantly enhances the device short circuit current density (J sc) and the fill factor when compared to the device with pristine SnO2 ETL, leading to an overall power conversion efficiency of 16.8% with negligible hysteresis. The effectiveness of the excited charge transfer process of SnO2-rGO ETL is revealed by time-resolved photoluminescence decay, and by electrochemical impedance spectrum measurements. Furthermore, the solar cell stability is also enhanced due to the incorporation of rGO in the ETL. This work provides a low cost and effective ETL modification strategy for achieving high performance planar PSCs.
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Affiliation(s)
- Rong Liu
- School of Electronic and Computer Engineering, Shenzhen Graduate School, Peking University, Shenzhen, 518055, People's Republic of China
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Nouri E, Mohammadi MR, Lianos P. Construction of Perovskite Solar Cells Using Inorganic Hole-Extracting Components. ACS OMEGA 2018; 3:46-54. [PMID: 31457877 PMCID: PMC6641469 DOI: 10.1021/acsomega.7b01775] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Accepted: 12/20/2017] [Indexed: 05/05/2023]
Abstract
A NiO x -graphene oxide (NiO x -GO) hybrid has been prepared by a simple solution-processed method and was used as hole-extraction material in perovskite solar cells with either gold or carbon as back contact electrode. The impact of GO content on the optoelectronic behavior of NiO x and the photovoltaic performance of the fabricated devices has been studied. Thus, GO incorporation showed a significant improvement in the performance of NiO x -based devices. The best attained efficiency was 13.3%, and it was 45% higher than that with pure NiO x . This is attributed to a significant improvement in the hole extraction, recombination resistance, and energy-level matching in comparison to pure NiO x . In addition, NiO x -GO/Au-based perovskite solar cell devices showed a negligible hysteresis effect and high reliability and repeatability. When carbon was used as back contact electrode, the obtained efficiencies were lower, but it leaves space for improvement. Devices based on inorganic hole transporters NiO x or NiO x -GO demonstrated higher stability in ambient air compared to a standard cell based on spiro-OMeTAD.
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Affiliation(s)
- Esmaiel Nouri
- Department
of Materials Science and Engineering, Sharif
University of Technology, Azadi Street, 11369 Tehran, Iran
| | - Mohammad Reza Mohammadi
- Department
of Materials Science and Engineering, Sharif
University of Technology, Azadi Street, 11369 Tehran, Iran
- E-mail: (M.R.M.)
| | - Panagiotis Lianos
- Department
of Chemical Engineering, University of Patras, 26500 Patras, Greece
- E-mail: (P.L.)
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Ma’alinia A, Asgari Moghaddam H, Nouri E, Mohammadi MR. Long-term stability of dye-sensitized solar cells using a facile gel polymer electrolyte. NEW J CHEM 2018. [DOI: 10.1039/c8nj02157k] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydroxypropyl cellulose as a polymeric gelator agent was incorporated in the liquid electrolyte of dye-sensitized solar cells, showing long-term stability and efficient performance.
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Affiliation(s)
- A. Ma’alinia
- Department of Materials Science and Engineering
- Sharif University of Technology
- Tehran
- Iran
| | - H. Asgari Moghaddam
- Department of Materials Science and Engineering
- Sharif University of Technology
- Tehran
- Iran
| | - E. Nouri
- Department of Materials Science and Engineering
- Sharif University of Technology
- Tehran
- Iran
| | - M. R. Mohammadi
- Department of Materials Science and Engineering
- Sharif University of Technology
- Tehran
- Iran
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Nouri E, Mohammadi MR, Xu ZX, Dracopoulos V, Lianos P. Improvement of the photovoltaic parameters of perovskite solar cells using a reduced-graphene-oxide-modified titania layer and soluble copper phthalocyanine as a hole transporter. Phys Chem Chem Phys 2018; 20:2388-2395. [DOI: 10.1039/c7cp04538g] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Graphene modified mesoporous titania for perovskite solar cells.
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Affiliation(s)
- Esmaiel Nouri
- Department of Materials Science and Engineering
- Sharif University of Technology
- Tehran
- Iran
| | | | - Zong-Xiang Xu
- Department of Chemistry
- South University of Science and Technology of China
- ShenZhen
- P. R. China
| | | | - Panagiotis Lianos
- Department of Chemical Engineering
- University of Patras
- 26500 Patras
- Greece
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17
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Yang P, Hu Z, Zhao X, Chen D, Lin H, Lai X, Yang L. Cesium-Containing Perovskite Solar Cell Based on Graphene/TiO2
Electron Transport Layer. ChemistrySelect 2017. [DOI: 10.1002/slct.201701479] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Pan Yang
- Institute of Materials; Chinese Academy of Engineering Physics; Jiangyou 621907 China
| | - Zijun Hu
- Institute of Materials; Chinese Academy of Engineering Physics; Jiangyou 621907 China
- College of Materials Science and Engineering; China Jiliang University; Hangzhou 310018 China
| | - Xiaochong Zhao
- Institute of Materials; Chinese Academy of Engineering Physics; Jiangyou 621907 China
- State Key Laboratory of New Ceramics & Fine Processing, School of Materials Science and Engineering; Tsinghua University; Beijing 100084 China
| | - Da Chen
- College of Materials Science and Engineering; China Jiliang University; Hangzhou 310018 China
| | - Hong Lin
- State Key Laboratory of New Ceramics & Fine Processing, School of Materials Science and Engineering; Tsinghua University; Beijing 100084 China
| | - Xinchun Lai
- Institute of Materials; Chinese Academy of Engineering Physics; Jiangyou 621907 China
| | - Lijun Yang
- Institute of Materials; Chinese Academy of Engineering Physics; Jiangyou 621907 China
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Nouri E, Mohammadi MR, Lianos P. Inverted perovskite solar cells based on lithium-functionalized graphene oxide as an electron-transporting layer. Chem Commun (Camb) 2017; 53:1630-1633. [DOI: 10.1039/c6cc09876b] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A perovskite solar cell with an inverted p–i–n architecture employing GO and GO-Li as functional charge transport components.
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Affiliation(s)
- Esmaiel Nouri
- Department of Materials Science and Engineering
- Sharif University of Technology
- Tehran
- Iran
- Department of Chemical Engineering
| | | | - Panagiotis Lianos
- Department of Chemical Engineering
- University of Patras
- 26500 Patras
- Greece
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