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Liu X, Tu J, Fang YW, Xi G, Li H, Wu R, Liu X, Lu D, He J, Zhang J, Tian J, Zhang L. Colossal Ferroelectric Photovoltaic Effect in Inequivalent Double-Perovskite Bi 2FeMnO 6 Thin Films. J Am Chem Soc 2024; 146:13934-13948. [PMID: 38741463 DOI: 10.1021/jacs.4c01702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Double perovskite films have been extensively studied for ferroelectric order, ferromagnetic order, and photovoltaic effects. The customized ion combinations and ordered ionic arrangements provide unique opportunities for bandgap engineering. Here, a synergistic strategy to induce chemical strain and charge compensation through inequivalent element substitution is proposed. A-site substitution of the barium ion is used to modify the chemical valence and defect density of the two B-site elements in Bi2FeMnO6 double perovskite epitaxial thin films. We dramatically increased the ferroelectric photovoltaic effect to ∼135.67 μA/cm2 from 30.62 μA/cm2, which is the highest in ferroelectric thin films with a thickness of less than 100 nm under white-light LED irradiation. More importantly, the ferroelectric polarization can effectively improve the photovoltaic efficiency of more than 5 times. High-resolution HAADF-STEM, synchrotron-based X-ray diffraction and absorption spectroscopy, and DFT calculations collectively demonstrate that inequivalent ion plays a dual role of chemical strain (+1.92 and -1.04 GPa) and charge balance, thereby introducing lattice distortion effects. The reduction of the oxygen vacancy density and the competing Jahn-Teller distortion of the oxygen octahedron are the main phenomena of the change in electron-orbital hybridization, which also leads to enhanced ferroelectric polarization values and optical absorption. The inequivalent strategy can be extended to other double perovskite systems and applied to other functional materials, such as photocatalysis for efficient defect control.
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Affiliation(s)
- Xudong Liu
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Jie Tu
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Yue-Wen Fang
- Fisika Aplikatua Saila, Gipuzkoako Ingeniaritza Eskola, University of the Basque Country (UPV/EHU), Europa Plaza 1 Donostia/San Sebastián 20018, Spain
- Centro de Física de Materiales (CSIC-UPV/EHU), Manuel de Lardizabal Pasealekua 5 Donostia/San Sebastián 20018, Spain
| | - Guoqiang Xi
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Hangren Li
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Rong Wu
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Xiuqiao Liu
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Dongfei Lu
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Jiushe He
- School of Materials and Energy, or Electron Microscopy Centre of Lanzhou University, Lanzhou University, Lanzhou 730000, China
| | - Junwei Zhang
- School of Materials and Energy, or Electron Microscopy Centre of Lanzhou University, Lanzhou University, Lanzhou 730000, China
| | - Jianjun Tian
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Linxing Zhang
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China
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Li CX, Chen C, Zhao L, Ma N. Self-Powered Bipolar Photodetector Based on a Ce-BaTiO 3 PTCR Semiconductor for Logic Gates. ACS APPLIED MATERIALS & INTERFACES 2023; 15:23402-23411. [PMID: 37130006 DOI: 10.1021/acsami.3c01525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Ferroelectric materials bring new opportunities for self-powdered photodetectors, taking advantage of their anomalous bulk photovoltaic effect. However, ferroelectric-based photodetectors suffer from relatively poor responsivity and detectivity due to obstacles of low electrical conductivity and low photoelectric conversion ability. The present work proposes a strategy based on heterovalent ion Ce-doping into BaTiO3 (Ce-BTO) that gives rise to a good room temperature conductivity combined with a significant PTCR (positive temperature coefficient of resistivity) effect. By utilizing a Ce-BTO PTCR semiconductor, a high-performance self-powered photodetector ITO/Ce-BTO/Ag is fabricated, demonstrating a polarity-switchable photoresponse with the change of wavelength due to the competition between hot electrons induced by the Ag plasmonic effect and electron-hole pairs separated by a Schottky barrier. Moreover, benefiting from the reduced bandgap and the introduced impurity states, good responsivity (9.85 × 10-5 A/W) and detectivity (1.25 × 1010 Jones) as well as fast response/recovery time (83/47 ms) is achieved under 450 nm illumination. Finally, four representative logic gates ("OR", "AND", "NOR", and "NAND") are demonstrated with one photodetector via the bipolar photoresponse. This work opens an avenue to promote the application of PTCR semiconductors in optoelectronics, offering a conceivable means toward high-performance self-powered photodetectors.
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Affiliation(s)
- Chen Xi Li
- CAS Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
- Key Laboratory of High-Precision Computation and Application of Quantum Field Theory of Hebei Province, College of Physics, Science, and Technology, Hebei University, Baoding, Hebei 071002, China
| | - Chen Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
| | - Lei Zhao
- Key Laboratory of High-Precision Computation and Application of Quantum Field Theory of Hebei Province, College of Physics, Science, and Technology, Hebei University, Baoding, Hebei 071002, China
| | - Nan Ma
- CAS Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
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3
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Kozlov SS, Nikolskaia AB, Alexeeva OV, Kosareva EK, Almjasheva OV, Gusarov VV, Shevaleevskiy OI, Larina LL. Bismuth iron tungstate pyrochlore thin films for photovoltaic applications. MENDELEEV COMMUNICATIONS 2022. [DOI: 10.1016/j.mencom.2022.11.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zhou K, Li Y, Zhuang S, Ren J, Tang F, Mu J, Wang P. A novel electrochemical sensor based on CuO-CeO2/MXene nanocomposite for quantitative and continuous detection of H2O2. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Jiang Z, Tan X, Huang Y. Piezoelectric effect enhanced photocatalysis in environmental remediation: State-of-the-art techniques and future scenarios. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150924. [PMID: 34655628 DOI: 10.1016/j.scitotenv.2021.150924] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/05/2021] [Accepted: 10/07/2021] [Indexed: 06/13/2023]
Abstract
Photocatalysis has been widely used as an advanced oxidation process to control pollutants effectively. However, environmental photocatalysis' decontamination efficiency is restricted to the photogenerated electron-hole pairs' rapid recombination. Recently, emerging investigations have been directed to generate internal electric field by piezoelectric effect to enhance the separation efficiency of photogenerated charge carriers for better photocatalytic performance; however, there are still huge knowledge gaps on the rational application of piezo-photocatalysis in environmental remediation and disinfection. Thus, we have conducted a comprehensive review to better understand the physicochemical properties of piezoelectric materials (non-centrosymmetric crystal structures, piezoelectric coefficient, Young's modulus, and etc.) and current study states. We also elucidated the strategy of piezo-photo catalysis system constructions (mono-component, core-shell structure, and etc.) and underlying mechanisms of enhanced remediation performance. Addressing the current challenges and future scenarios (degradation of organic pollutants, disinfection, and etc.), the present review would shed light on the advanced wastewater treatment development towards sustainable control of emerging containments.
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Affiliation(s)
- Zhenying Jiang
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, China
| | - Xianjun Tan
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, China
| | - Yuxiong Huang
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, China.
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6
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Novel photoactive magnetic semiconductor nanocomposites with potential magneto-optical properties. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-021-01980-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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7
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Zhang S, Wang J, Wen S, Jiang M, Xiao H, Ding X, Wang N, Li M, Zu X, Li S, Yam C, Huang B, Qiao L. Approaching Charge Separation Efficiency to Unity without Charge Recombination. PHYSICAL REVIEW LETTERS 2021; 126:176401. [PMID: 33988439 DOI: 10.1103/physrevlett.126.176401] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 10/30/2020] [Accepted: 03/25/2021] [Indexed: 06/12/2023]
Abstract
Improving the efficiency of charge separation (CS) and charge transport (CT) is essential for almost all optoelectronic applications, yet its maximization remains a big challenge. Here we propose a conceptual strategy to achieve CS efficiency close to unity and simultaneously avoid charge recombination (CR) during CT in a ferroelectric polar-discontinuity (PD) superlattice structure, as demonstrated in (BaTiO_{3})_{m}/(BiFeO_{3})_{n}, which is fundamentally different from the existing mechanisms. The competition of interfacial dipole and ferroelectric PD induces opposite band bending in BiFeO_{3} and BaTiO_{3} sublattices. Consequently, the photoexcited electrons (e) and holes (h) in individual sublattices move forward to the opposite interfaces forming electrically isolated e and h channels, leading to a CS efficiency close to unity. Importantly, the spatial isolation of conduction channels in (BaTiO_{3})_{m}/(BiFeO_{3})_{n} enable suppression of CR during CT, thus realizing a unique band diagram for spatially orthogonal CS and CT. Remarkably, (BaTiO_{3})_{m}/(BiFeO_{3})_{n} can maintain a high photocurrent and large band gap simultaneously. Our results provide a fascinating illumination for designing artificial heterostructures toward ideal CS and CT in optoelectronic applications.
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Affiliation(s)
- Sa Zhang
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Jianfeng Wang
- Beijing Computational Science Research Center, Beijing, 100193, China
| | - Shizheng Wen
- Beijing Computational Science Research Center, Beijing, 100193, China
| | - Ming Jiang
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Haiyan Xiao
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Xiang Ding
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Ning Wang
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Menglu Li
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Xiaotao Zu
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Sean Li
- School of Materials, University of New South Wales, Sydney 2052, New South Wales Australia
| | - ChiYung Yam
- Beijing Computational Science Research Center, Beijing, 100193, China
| | - Bing Huang
- Beijing Computational Science Research Center, Beijing, 100193, China
- Department of Physics, Beijing Normal University, Beijing 100875, China
| | - Liang Qiao
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China
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8
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Affiliation(s)
- Ilya Grinberg
- Department of Chemistry Bar Ilan University Ramat Gan Israel
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9
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Li C, Jiang K, Jiang J, Hu Z, Liu A, Hu G, Shi W, Chu J. Enhanced photovoltaic response of lead-free ferroelectric solar cells based on (K,Bi)(Nb,Yb)O 3 films. Phys Chem Chem Phys 2020; 22:3691-3701. [PMID: 32003366 DOI: 10.1039/c9cp06291b] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we firstly present the (K,Bi)(Nb,Yb)O3 inorganic ferroelectric photovoltaic (FPV) film, in which a nearly ideal bandgap of ∼1.45 eV in the center of the solar spectrum and the co-existence of oxygen vacancies as well as ferroelectric polarization were confirmed. Furthermore, a novel cell structure is successfully fabricated by combining charge-transporting TiO2 nanoparticles, the perovskite sensitizer and a light-absorbing oxide hole p-type NiO conductor to realize a 1 V open circuit voltage, which can be increased to 1.56 V by adjusting the test bias near the coercive voltage. Additionally, under simulated standard AM 1.5G illumination, a fill factor of 86% and a power conversion efficiency of 0.85% are achieved via oxygen vacancy electromigration and polarization switching modulation. It is shown that the obtained power conversion efficiency is one to three orders of magnitude higher than those of pure BiFeO3 and Pb(Zr,Ti)O3. The enhanced PV effects are well elucidated using the transformation from a Schottky-like barrier to Ohmic contacts caused by polarization switching and oxygen vacancies. Building upon the above studies, deep insights into the bandgap tunability and PV effects in ferroelectric films with high oxygen vacancy concentration are provided and will facilitate a new versatile route for exploring high PV performance based on inorganic ferroelectric films.
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Affiliation(s)
- Chuanqing Li
- Department of Physics, Shanghai Normal University, Shanghai 200234, China
| | - Kai Jiang
- Key Laboratory of Polar Materials and Devices (MOE) and Technical Center for Multifunctional Magneto-Optical Spectroscopy (Shanghai), Department of Electronic Engineering, East China Normal University, Shanghai 200241, China.
| | - Jinchun Jiang
- Key Laboratory of Polar Materials and Devices (MOE) and Technical Center for Multifunctional Magneto-Optical Spectroscopy (Shanghai), Department of Electronic Engineering, East China Normal University, Shanghai 200241, China.
| | - Zhigao Hu
- Key Laboratory of Polar Materials and Devices (MOE) and Technical Center for Multifunctional Magneto-Optical Spectroscopy (Shanghai), Department of Electronic Engineering, East China Normal University, Shanghai 200241, China.
| | - Aiyun Liu
- Department of Physics, Shanghai Normal University, Shanghai 200234, China
| | - Gujin Hu
- Department of Physics, Shanghai Normal University, Shanghai 200234, China
| | - Wangzhou Shi
- Department of Physics, Shanghai Normal University, Shanghai 200234, China
| | - Junhao Chu
- Key Laboratory of Polar Materials and Devices (MOE) and Technical Center for Multifunctional Magneto-Optical Spectroscopy (Shanghai), Department of Electronic Engineering, East China Normal University, Shanghai 200241, China.
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10
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Yin L, Mi W. Progress in BiFeO 3-based heterostructures: materials, properties and applications. NANOSCALE 2020; 12:477-523. [PMID: 31850428 DOI: 10.1039/c9nr08800h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
BiFeO3-based heterostructures have attracted much attention for potential applications due to their room-temperature multiferroic properties, proper band gaps and ultrahigh ferroelectric polarization of BiFeO3, such as data storage, optical utilization in visible light regions and synapse-like function. Here, this work aims to offer a systematic review on the progress of BiFeO3-based heterostructures. In the first part, the optical, electric, magnetic, and valley properties and their interactions in BiFeO3-based heterostructures are briefly reviewed. In the second part, the morphologies of BiFeO3 and medium materials in the heterostructures are discussed. Particularly, in the third part, the physical properties and underlying mechanism in BiFeO3-based heterostructures are discussed thoroughly, such as the photovoltaic effect, electric field control of magnetism, resistance switching, and two-dimensional electron gas and valley characteristics. The fourth part illustrates the applications of BiFeO3-based heterostructures based on the materials and physical properties discussed in the second and third parts. This review also includes a future prospect, which can provide guidance for exploring novel physical properties and designing multifunctional devices.
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Affiliation(s)
- Li Yin
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparation Technology, School of Science, Tianjin University, Tianjin 300354, China.
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11
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12
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Chang L, Wang L, You L, Yang Z, Abdelsamie A, Zhang Q, Zhou Y, Gu L, Chambers SA, Wang J. Tuning Photovoltaic Performance of Perovskite Nickelates Heterostructures by Changing the A-Site Rare-Earth Element. ACS APPLIED MATERIALS & INTERFACES 2019; 11:16191-16197. [PMID: 30964625 DOI: 10.1021/acsami.9b01851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Perovskite rare-earth nickelates (RNiO3) have attracted much attention because of their exotic physical properties and rich potential applications. Here, we report systematic tuning of the electronic structures of RNiO3 (R = Nd, Sm, Gd, and Lu) by isovalent A-site substitution. By integrating RNiO3 thin films with Nb-doped SrTiO3 (NSTO), p-n heterojunction photovoltaic cells have been prepared and their performance has been investigated. The open-circuit voltage increases monotonically with decreasing A-site cation radius. This change results in a downward shift of the Fermi level and induces an increase in the built-in potential at the RNiO3/NSTO heterojunction, with LuNiO3/NSTO showing the largest open-circuit voltage. At the same time, the short-circuit current initially increases upon changing the A-site element from Nd to Sm. However, the larger bandgaps of GdNiO3 and LuNiO3 reduce light absorption which in turn induces a decrease in the short-circuit current. A power conversion efficiency of 1.13% has been achieved by inserting an ultrathin insulating SrTiO3 layer at the SmNiO3/NSTO interface. Our study illustrates how changing the A-site cation is an effective strategy for tuning photovoltaic performance and sheds light on which A-site element is the best for photovoltaic applications, which can significantly increase the applicability of nickelates in optoelectric devices.
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Affiliation(s)
- Lei Chang
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Le Wang
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , Richland , Washington 99354 , United States
| | - Lu You
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Zhenzhong Yang
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , Richland , Washington 99354 , United States
| | - Amr Abdelsamie
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Qinghua Zhang
- Beijing National Laboratory for Condensed Matter Physics , Institute of Physics, Chinese Academy of Sciences , Beijing 100190 , China
| | - Yang Zhou
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Lin Gu
- Beijing National Laboratory for Condensed Matter Physics , Institute of Physics, Chinese Academy of Sciences , Beijing 100190 , China
- Songshan Lake Materials Laboratory , Dongguan , Guangdong 523808 , China
- School of Physical Sciences , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Scott A Chambers
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , Richland , Washington 99354 , United States
| | - Junling Wang
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
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13
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Huang W, Harnagea C, Tong X, Benetti D, Sun S, Chaker M, Rosei F, Nechache R. Epitaxial Bi 2FeCrO 6 Multiferroic Thin-Film Photoanodes with Ultrathin p-Type NiO Layers for Improved Solar Water Oxidation. ACS APPLIED MATERIALS & INTERFACES 2019; 11:13185-13193. [PMID: 30892871 DOI: 10.1021/acsami.8b20998] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The photoelectric properties of multiferroic double-perovskite Bi2FeCrO6 (BFCO), such as above-band gap photovoltages, switchable photocurrents, and bulk photovoltaic effects, have recently been explored for potential applications in solar technology. Here, we report the fabrication of photoelectrodes based on n-type ferroelectric (FE) semiconductor BFCO heterojunctions coated with p-type transparent conducting oxides (TCOs) by pulsed laser deposition and their application for photoelectrochemical (PEC) water oxidation. The photocatalytic properties of the bare BFCO photoanodes can be improved by controlling the FE polarization state. However, the charge recombination as well as the limited charge transfer kinetics in the photoanode/electrolyte cause major energy loss and thus hinder the PEC performance. We show that this problem may be addressed by the deposition of an ultrathin p-type NiO layer on the photoanode to enhance the charge transport kinetics and reduce charge recombination at surface-trapped states for increased surface band bending. A fourfold enhancement of photocurrent density, up to 0.4 mA cm-2 (at +1.23 V vs RHE), a best performance of stability over 4 h, and a high incident photon-to-current efficiency (∼3.7%) were achieved under 1 sun illumination in such p-NiO/n-BFCO heterojunction photoanodes. These studies reveal the optimization of PEC performance by polarization switching of BFCO and the successful achievement of p-TCOs/n-FE heterojunction photoanodes that are able to sustain water oxidation that is stable for many hours.
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Affiliation(s)
- Wei Huang
- Centre Énergie, Matériaux et Télécommunications , Institut National de la Recherche Scientifique , 1650, Boulevard Lionel-Boulet , Varennes , Québec J3X 1S2 , Canada
| | - Catalin Harnagea
- Centre Énergie, Matériaux et Télécommunications , Institut National de la Recherche Scientifique , 1650, Boulevard Lionel-Boulet , Varennes , Québec J3X 1S2 , Canada
| | - Xin Tong
- Centre Énergie, Matériaux et Télécommunications , Institut National de la Recherche Scientifique , 1650, Boulevard Lionel-Boulet , Varennes , Québec J3X 1S2 , Canada
- School of Chemistry and Materials Science , Guizhou Normal University , Guiyang 550001 , People's Republic of China
| | - Daniele Benetti
- Centre Énergie, Matériaux et Télécommunications , Institut National de la Recherche Scientifique , 1650, Boulevard Lionel-Boulet , Varennes , Québec J3X 1S2 , Canada
| | - Shuhui Sun
- Centre Énergie, Matériaux et Télécommunications , Institut National de la Recherche Scientifique , 1650, Boulevard Lionel-Boulet , Varennes , Québec J3X 1S2 , Canada
| | - Mohamed Chaker
- Centre Énergie, Matériaux et Télécommunications , Institut National de la Recherche Scientifique , 1650, Boulevard Lionel-Boulet , Varennes , Québec J3X 1S2 , Canada
| | - Federico Rosei
- Centre Énergie, Matériaux et Télécommunications , Institut National de la Recherche Scientifique , 1650, Boulevard Lionel-Boulet , Varennes , Québec J3X 1S2 , Canada
- Institute of Fundamental and Frontier Science , University of Electronic Science and Technology of China , Chengdu 610054 , People's Republic of China
| | - Riad Nechache
- École de Technologie Supérieure , 1100 Rue Notre-Dame Ouest , Montréal , Québec H3C 1K3 , Canada
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Machado P, Scigaj M, Gazquez J, Rueda E, Sánchez-Díaz A, Fina I, Gibert-Roca M, Puig T, Obradors X, Campoy-Quiles M, Coll M. Band Gap Tuning of Solution-Processed Ferroelectric Perovskite BiFe 1-x Co x O 3 Thin Films. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2019; 31:947-954. [PMID: 30828131 PMCID: PMC6388762 DOI: 10.1021/acs.chemmater.8b04380] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 01/15/2019] [Indexed: 06/09/2023]
Abstract
Ferroelectric perovskite oxides are emerging as a promising photoactive layer for photovoltaic applications because of their very high stability and their alternative ferroelectricity-related mechanism for solar energy conversion that could lead to extraordinarily high efficiencies. One of the biggest challenges so far is to reduce their band gap toward the visible region while simultaneously retaining ferroelectricity. To address these two issues, herein an elemental composition engineering of BiFeO3 is performed by substituting Fe by Co cations, as a means to tune the characteristics of the transition metal-oxygen bond. We demonstrate by solution processing the formation of epitaxial, pure phase, and stable BiFe1-x Co x O3 thin films for x ≤ 0.3 and film thickness up to 100 nm. Importantly, the band gap can be tuned from 2.7 to 2.3 eV upon cobalt substitution while simultaneously enhancing ferroelectricity. As a proof of concept, nonoptimized vertical devices have been fabricated and, reassuringly, the electrical photoresponse in the visible region of the Co-substituted phase is improved with respect to the unsubstituted oxide.
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15
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Mai H, Lu T, Li Q, Sun Q, Vu K, Chen H, Wang G, Humphrey MG, Kremer F, Li L, Withers RL, Liu Y. Photovoltaic Effect of a Ferroelectric-Luminescent Heterostructure under Infrared Light Illumination. ACS APPLIED MATERIALS & INTERFACES 2018; 10:29786-29794. [PMID: 30088753 DOI: 10.1021/acsami.8b09745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this report, a ferroelectric-luminescent heterostructure is designed to convert infrared light into electric power. We use BiFeO3 (BFO) as the ferroelectric layer and Y2O3:Yb,Tm (YOT) as the upconversion layer. Different from conventional ferroelectric materials, this heterostructure exhibits switchable and stable photovoltaic effects under 980 nm illumination, whose energy is much lower than the band gap of BFO. The energy transfer mechanism in this heterostructure is therefore studied carefully. It is found that a highly efficient nonradiative energy transfer process from YOT to BFO plays a critical role in achieving the below-band-gap photon-excited photovoltaic effects in this heterostructure. Our results also indicate that by introducing asymmetric electrodes, both the photovoltage and photocurrent are further enhanced when the built-in field and the depolarization field are aligned. The construction of ferroelectric-luminescent heterostructure is consequently proposed as a promising route to enhance the photovoltaic effects of ferroelectric materials by extending the absorption of the solar spectrum.
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Affiliation(s)
| | | | - Qian Li
- Advanced Photon Source , Argonne National Laboratory , Argonne , Illinois 60439 , United States
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Huang W, Chakrabartty J, Harnagea C, Gedamu D, Ka I, Chaker M, Rosei F, Nechache R. Highly Sensitive Switchable Heterojunction Photodiode Based on Epitaxial Bi 2FeCrO 6 Multiferroic Thin Films. ACS APPLIED MATERIALS & INTERFACES 2018; 10:12790-12797. [PMID: 29565117 DOI: 10.1021/acsami.8b00459] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Perovskite multiferroic oxides are promising materials for the realization of sensitive and switchable photodiodes because of their favorable band gap (<3.0 eV), high absorption coefficient, and tunable internal ferroelectric (FE) polarization. A high-speed switchable photodiode based on multiferroic Bi2FeCrO6 (BFCO)/SrRuO3 (SRO)-layered heterojunction was fabricated by pulsed laser deposition. The heterojunction photodiode exhibits a large ideality factor ( n = ∼5.0) and a response time as fast as 68 ms, thanks to the effective charge carrier transport and collection at the BFCO/SRO interface. The diode can switch direction when the electric polarization is reversed by an external voltage pulse. The time-resolved photoluminescence decay of the device measured at ∼500 nm demonstrates an ultrafast charge transfer (lifetime = ∼6.4 ns) in BFCO/SRO heteroepitaxial structures. The estimated responsivity value at 500 nm and zero bias is 0.38 mA W-1, which is so far the highest reported for any FE thin film photodiode. Our work highlights the huge potential for using multiferroic oxides to fabricate highly sensitive and switchable photodiodes.
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Affiliation(s)
- Wei Huang
- INRS-Centre Énergie, Matériaux et Télécommunications , 1650, Boulevard Lionel-Boulet , Varennes , Québec J3X 1S2 , Canada
| | - Joyprokash Chakrabartty
- INRS-Centre Énergie, Matériaux et Télécommunications , 1650, Boulevard Lionel-Boulet , Varennes , Québec J3X 1S2 , Canada
| | - Catalin Harnagea
- INRS-Centre Énergie, Matériaux et Télécommunications , 1650, Boulevard Lionel-Boulet , Varennes , Québec J3X 1S2 , Canada
| | - Dawit Gedamu
- École de Technologie Supérieure , 1100 Rue Notre-Dame Ouest , Montréal , Québec H3C 1K3 , Canada
| | - Ibrahima Ka
- École de Technologie Supérieure , 1100 Rue Notre-Dame Ouest , Montréal , Québec H3C 1K3 , Canada
| | - Mohamed Chaker
- INRS-Centre Énergie, Matériaux et Télécommunications , 1650, Boulevard Lionel-Boulet , Varennes , Québec J3X 1S2 , Canada
| | - Federico Rosei
- INRS-Centre Énergie, Matériaux et Télécommunications , 1650, Boulevard Lionel-Boulet , Varennes , Québec J3X 1S2 , Canada
- Department of Electrical Engineering, Institute for Fundamental and Frontier Science , University of Electronic Science and Technology of China , Chengdu 610054 , People's Republic of China
| | - Riad Nechache
- École de Technologie Supérieure , 1100 Rue Notre-Dame Ouest , Montréal , Québec H3C 1K3 , Canada
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17
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Li YY, Wang JG, Sun HH, Wei B. Heterostructured TiO 2/NiTiO 3 Nanorod Arrays for Inorganic Sensitized Solar Cells with Significantly Enhanced Photovoltaic Performance and Stability. ACS APPLIED MATERIALS & INTERFACES 2018; 10:11580-11586. [PMID: 29557649 DOI: 10.1021/acsami.7b17044] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Organic dyes used in the conventional dye-sensitized solar cells (DSSCs) suffer from poor light stability and high cost. In this work, we demonstrate a new inorganic sensitized solar cell based on ordered one-dimensional semiconductor nanorod arrays of TiO2/NiTiO3 (NTO) heterostructures prepared via a facile two-step hydrothermal approach. The semiconductor heterostructure arrays are highly desirable and promising for DSSCs because of their direct charge transport capability and slow charge recombination rate. The low-cost NTO inorganic semiconductor possesses an appropriate band gap that matches well with TiO2, which behaves like a "dye" to enable efficient light harvesting and fast electron-hole separation. The solar cells constructed by the ordered TiO2/NTO heterostructure photoanodes show a significantly improved power conversion efficiency, high fill factor, and more promising, outstanding life stability. The present work will open up an avenue to design heterostructured inorganics for high-performance solar cells.
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Affiliation(s)
- Yue-Ying Li
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering , Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU) , Xi'an 710072 , China
| | - Jian-Gan Wang
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering , Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU) , Xi'an 710072 , China
| | - Huan-Huan Sun
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering , Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU) , Xi'an 710072 , China
| | - Bingqing Wei
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering , Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU) , Xi'an 710072 , China
- Department of Mechanical Engineering , University of Delaware , Newark , Delaware 19716 , United States
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18
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Yin L, Wang X, Mi W. Tunable Valley and Spin Polarizations in BiXO 3/BiIrO 3 (X = Fe, Mn) Ferroelectric Superlattices. ACS APPLIED MATERIALS & INTERFACES 2018; 10:3822-3829. [PMID: 29322771 DOI: 10.1021/acsami.7b18379] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The generation and modulation on valley and spin degrees of freedom are essential for multifunctional electronic devices. Herewith, the electronic structures in BiXO3/BiIrO3 (X = Fe, Mn) ferroelectric superlattices are studied by first-principles calculations with spin-orbital coupling. Different from the previous BiAlO3/BiIrO3 system, both valley and spin polarizations in bilayered BiIrO3 are achieved in BiXO3/BiIrO3 superlattices, where the spin polarization in the valley can be engineered by the spin orientation of Fe or Mn owing to the xy-plane orbitals. Especially, the relatively parallel and antiparallel directions of ferroelectric polarization in BiFeO3 and BiIrO3 can switch the valley injection in BiFeO3/BiIrO3 superlattices. Overall, the tunable valley and spin polarizations in BiFeO3/BiIrO3 ferroelectric superlattices pave a way for developing nonvolatile data memories and valley-spin devices.
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Affiliation(s)
- Li Yin
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparation Technology, School of Science, Tianjin University , Tianjin 300354, China
| | - Xiaocha Wang
- School of Electrical and Electronic Engineering, Tianjin University of Technology , Tianjin 300384, China
| | - Wenbo Mi
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparation Technology, School of Science, Tianjin University , Tianjin 300354, China
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Ge C, Jin KJ, Zhang QH, Du JY, Gu L, Guo HZ, Yang JT, Gu JX, He M, Xing J, Wang C, Lu HB, Yang GZ. Toward Switchable Photovoltaic Effect via Tailoring Mobile Oxygen Vacancies in Perovskite Oxide Films. ACS APPLIED MATERIALS & INTERFACES 2016; 8:34590-34597. [PMID: 27936535 DOI: 10.1021/acsami.6b13203] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The defect chemistry of perovskite oxides involves the cause to most of their abundant functional properties, including interface magnetism, charge transport, ionic exchange, and catalytic activity. The possibility to achieve dynamic control over oxygen anion vacancies offers a unique opportunity for the development of appealing switchable devices, which at present are commonly based on ferroelectric materials. Herein, we report the discovery of a switchable photovoltaic effect, that the sign of the open voltage and the short circuit current can be reversed by inverting the polarity of the applied field, upon electrically tailoring the distribution of oxygen vacancies in perovskite oxide films. This phenomenon is demonstrated in lateral photovoltaic devices based on both ferroelectric BiFeO3 and paraelectric SrTiO3 films, under a reversed applied field whose magnitude is much smaller than the coercivity value of BiFeO3. The migration of oxygen vacancies was directly observed by employing an advanced annular bright-field scanning transmission electron microscopy technique with in situ biasing equipment. We conclude that the band bending induced by the motion of oxygen vacancies is the driving force for the reversible switching between two photovoltaic states. The present work can provide an active path for the design of novel switchable photovoltaic devices with a wide range of transition metal oxides in terms of the ionic degrees of freedom.
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Affiliation(s)
- Chen Ge
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
| | - Kui-Juan Jin
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
- Collaborative Innovation Center of Quantum Matter , Beijing 100190, China
| | - Qing-Hua Zhang
- School of Materials Science and Engineering, State Key Lab of New Ceramics and Fine Processing, Tsinghua University , Beijing 100084, China
| | - Jian-Yu Du
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
- School of Science, China University of Geosciences , Beijing 100083, China
| | - Lin Gu
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
- Collaborative Innovation Center of Quantum Matter , Beijing 100190, China
| | - Hai-Zhong Guo
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
| | - Jing-Ting Yang
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
| | - Jun-Xing Gu
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
| | - Meng He
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
| | - Jie Xing
- School of Science, China University of Geosciences , Beijing 100083, China
| | - Can Wang
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
| | - Hui-Bin Lu
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
| | - Guo-Zhen Yang
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
- Collaborative Innovation Center of Quantum Matter , Beijing 100190, China
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