1
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Salah L, Makhseed S, Ghazal B, Abdel Nazeer A, Etherington MK, Ponseca CS, Li C, Monkman AP, Danos A, Shuaib A. Covalently linked pyrene antennas for optically dense yet aggregation-resistant light-harvesting systems. Phys Chem Chem Phys 2023; 25:24878-24882. [PMID: 37681234 DOI: 10.1039/d3cp02586a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
In this study we present a novel energy transfer material inspired by natural light-harvesting antenna arrays, zinc(II) phthalocyanine-pyrene (ZnPcPy). The ZnPcPy system facilitates energy transfer from 16 covalently linked pyrene (Py) donor chromophores to the emissive central zinc(II) phthalocyanine (ZnPc) core. Nearly 98% energy transfer efficiency is determined from the changes in emission decay rates between free MePy to covalently linked Py, supported by comparisons of photoluminescence quantum yields using different excitation wavelengths. A comparative analysis of ZnPcPy and an equivalent mixture of ZnPc and MePy demonstrates the superior light-harvesting performance of the covalently linked system, with energy transfer rates 9705 times higher in the covalently bound system. This covalent strategy allows for very high loadings of absorbing Py chromophores to be achieved while also avoiding exciton quenching that would otherwise arise, with the same strategy widely applicable to other pairs of Főrster resonance energy transfer (FRET) chromophores.
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Affiliation(s)
- Lubna Salah
- Department of Chemistry, Faculty of Science, Kuwait University, P. O. Box 5969, Safat 13060, Kuwait
| | - Saad Makhseed
- Department of Chemistry, Faculty of Science, Kuwait University, P. O. Box 5969, Safat 13060, Kuwait
| | - Basma Ghazal
- Organometallic and Organometalloid Chemistry Department, National Research Centre, Giza, Egypt
| | - Ahmed Abdel Nazeer
- Organometallic and Organometalloid Department, National Research Centre, Dokki, Cairo, 12622, Egypt
| | - Marc K Etherington
- Department of Mathematics, Physics & Electrical Engineering, Northumbria University, Ellison Place, Newcastle upon Tyne, NE1 8ST, UK
| | - Carlito S Ponseca
- Mathematics and Natural Science Department, Gulf University for Science and Technology, Kuwait
| | - Chunyong Li
- Department of Physics, Durham University, South Road, Durham, DH1 3LE, UK.
| | - Andrew P Monkman
- Department of Physics, Durham University, South Road, Durham, DH1 3LE, UK.
| | - Andrew Danos
- Department of Physics, Durham University, South Road, Durham, DH1 3LE, UK.
| | - Ali Shuaib
- Biomedical Engineering Unit, Department of Physiology, Faculty of Medicine, Kuwait University, P. O. Box 24923, Safat 13110, Kuwait.
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2
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Lan Y, Dringoli BJ, Valverde-Chávez DA, Ponseca CS, Sutton M, He Y, Kanatzidis MG, Cooke DG. Ultrafast correlated charge and lattice motion in a hybrid metal halide perovskite. Sci Adv 2019; 5:eaaw5558. [PMID: 31172030 PMCID: PMC6544455 DOI: 10.1126/sciadv.aaw5558] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 04/17/2019] [Indexed: 05/26/2023]
Abstract
Hybrid organic-inorganic halide perovskites have shown remarkable optoelectronic properties, exhibiting an impressive tolerance to defects believed to originate from correlated motion of charge carriers and the polar lattice forming large polarons. Few experimental techniques are capable of directly probing these correlations, requiring simultaneous sub-millielectron volt energy and femtosecond temporal resolution after absorption of a photon. Here, we use time-resolved multi-THz spectroscopy, sensitive to the internal excitations of the polaron, to temporally and energetically resolve the coherent coupling of charges to longitudinal optical phonons in single-crystal CH3NH3PbI3 (MAPI). We observe room temperature intraband quantum beats arising from the coherent displacement of charge from the coupled phonon cloud. Our measurements provide strong evidence for the existence of polarons in MAPI at room temperature, suggesting that electron/hole-phonon coupling is a defining aspect of the hybrid metal-halide perovskites contributing to the protection from scattering and enhanced carrier lifetimes that define their usefulness in devices.
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Affiliation(s)
- Yang Lan
- Department of Physics, McGill University, Montreal, QC H3A 2T8, Canada
| | | | | | - Carlito S. Ponseca
- Division of Biomolecular and Organic Electronics, IFM, Linköpings Universitet, Linköping SE- 58183, Sweden
| | - Mark Sutton
- Department of Physics, McGill University, Montreal, QC H3A 2T8, Canada
| | - Yihui He
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | | | - David G. Cooke
- Department of Physics, McGill University, Montreal, QC H3A 2T8, Canada
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3
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Yao H, Cui Y, Qian D, Ponseca CS, Honarfar A, Xu Y, Xin J, Chen Z, Hong L, Gao B, Yu R, Zu Y, Ma W, Chabera P, Pullerits T, Yartsev A, Gao F, Hou J. 14.7% Efficiency Organic Photovoltaic Cells Enabled by Active Materials with a Large Electrostatic Potential Difference. J Am Chem Soc 2019; 141:7743-7750. [DOI: 10.1021/jacs.8b12937] [Citation(s) in RCA: 281] [Impact Index Per Article: 56.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Huifeng Yao
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yong Cui
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Deping Qian
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping 58183, Sweden
| | - Carlito S. Ponseca
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping 58183, Sweden
| | - Alireza Honarfar
- Division of Chemical Physics, Kemicentrum, Lund University, Lund SE-22100, Sweden
| | - Ye Xu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jingming Xin
- State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, P. R. China
| | - Zhenyu Chen
- State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, P. R. China
| | - Ling Hong
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bowei Gao
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Runnan Yu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yunfei Zu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wei Ma
- State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, P. R. China
| | - Pavel Chabera
- Division of Chemical Physics, Kemicentrum, Lund University, Lund SE-22100, Sweden
| | - Tönu Pullerits
- Division of Chemical Physics, Kemicentrum, Lund University, Lund SE-22100, Sweden
| | - Arkady Yartsev
- Division of Chemical Physics, Kemicentrum, Lund University, Lund SE-22100, Sweden
| | - Feng Gao
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping 58183, Sweden
| | - Jianhui Hou
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, China
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4
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Affiliation(s)
- Carlito S. Ponseca
- Division
of Chemical Physics, Chemical Center, and ‡Theoretical Chemistry Division,
Chemical Center, Lund University, Box 124, Lund SE-221 00, Sweden
| | - Pavel Chábera
- Division
of Chemical Physics, Chemical Center, and ‡Theoretical Chemistry Division,
Chemical Center, Lund University, Box 124, Lund SE-221 00, Sweden
| | - Jens Uhlig
- Division
of Chemical Physics, Chemical Center, and ‡Theoretical Chemistry Division,
Chemical Center, Lund University, Box 124, Lund SE-221 00, Sweden
| | - Petter Persson
- Division
of Chemical Physics, Chemical Center, and ‡Theoretical Chemistry Division,
Chemical Center, Lund University, Box 124, Lund SE-221 00, Sweden
| | - Villy Sundström
- Division
of Chemical Physics, Chemical Center, and ‡Theoretical Chemistry Division,
Chemical Center, Lund University, Box 124, Lund SE-221 00, Sweden
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5
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Corani A, Li MH, Shen PS, Chen P, Guo TF, El Nahhas A, Zheng K, Yartsev A, Sundström V, Ponseca CS. Ultrafast Dynamics of Hole Injection and Recombination in Organometal Halide Perovskite Using Nickel Oxide as p-Type Contact Electrode. J Phys Chem Lett 2016; 7:1096-101. [PMID: 26942559 DOI: 10.1021/acs.jpclett.6b00238] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
There is a mounting effort to use nickel oxide (NiO) as p-type selective electrode for organometal halide perovskite-based solar cells. Recently, an overall power conversion efficiency using this hole acceptor has reached 18%. However, ultrafast spectroscopic investigations on the mechanism of charge injection as well as recombination dynamics have yet to be studied and understood. Using time-resolved terahertz spectroscopy, we show that hole transfer is complete on the subpicosecond time scale, driven by the favorable band alignment between the valence bands of perovskite and NiO nanoparticles (NiO(np)). Recombination time between holes injected into NiO(np) and mobile electrons in the perovskite material is shown to be hundreds of picoseconds to a few nanoseconds. Because of the low conductivity of NiO(np), holes are pinned at the interface, and it is electrons that determine the recombination rate. This recombination competes with charge collection and therefore must be minimized. Doping NiO to promote higher mobility of holes is desirable in order to prevent back recombination.
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Affiliation(s)
- Alice Corani
- Division of Chemical Physics, Lund University , Box 124, 221 00 Lund, Sweden
| | - Ming-Hsien Li
- Department of Photonics, National Cheng Kung University , Tainan, Taiwan 701
| | - Po-Shen Shen
- Department of Photonics, National Cheng Kung University , Tainan, Taiwan 701
| | - Peter Chen
- Department of Photonics, National Cheng Kung University , Tainan, Taiwan 701
- Research Center for Energy Technology and Strategy (RCETS), Tainan, Taiwan 701
- Advanced Optoelectronic Technology Center (AOTC), Tainan, Taiwan 701
| | - Tzung-Fang Guo
- Department of Photonics, National Cheng Kung University , Tainan, Taiwan 701
- Research Center for Energy Technology and Strategy (RCETS), Tainan, Taiwan 701
- Advanced Optoelectronic Technology Center (AOTC), Tainan, Taiwan 701
| | - Amal El Nahhas
- Division of Chemical Physics, Lund University , Box 124, 221 00 Lund, Sweden
| | - Kaibo Zheng
- Division of Chemical Physics, Lund University , Box 124, 221 00 Lund, Sweden
| | - Arkady Yartsev
- Division of Chemical Physics, Lund University , Box 124, 221 00 Lund, Sweden
| | - Villy Sundström
- Division of Chemical Physics, Lund University , Box 124, 221 00 Lund, Sweden
| | - Carlito S Ponseca
- Division of Chemical Physics, Lund University , Box 124, 221 00 Lund, Sweden
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6
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Ponseca CS, Sundström V. Revealing the ultrafast charge carrier dynamics in organo metal halide perovskite solar cell materials using time resolved THz spectroscopy. Nanoscale 2016; 8:6249-6257. [PMID: 26763720 DOI: 10.1039/c5nr08622a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Ultrafast charge carrier dynamics in organo metal halide perovskite has been probed using time resolved terahertz (THz) spectroscopy (TRTS). Current literature on its early time characteristics is unanimous: sub-ps charge carrier generation, highly mobile charges and very slow recombination rationalizing the exceptionally high power conversion efficiency for a solution processed solar cell material. Electron injection from MAPbI3 to nanoparticles (NP) of TiO2 is found to be sub-ps while Al2O3 NPs do not alter charge dynamics. Charge transfer to organic electrodes, Spiro-OMeTAD and PCBM, is sub-ps and few hundreds of ps respectively, which is influenced by the alignment of energy bands. It is surmised that minimizing defects/trap states is key in optimizing charge carrier extraction from these materials.
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Affiliation(s)
- C S Ponseca
- Division of Chemical Physics, Lund University, Getingevagen 60, Lund, Sweden.
| | - V Sundström
- Division of Chemical Physics, Lund University, Getingevagen 60, Lund, Sweden.
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7
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Ponseca CS, Tian Y, Sundström V, Scheblykin IG. Excited state and charge-carrier dynamics in perovskite solar cell materials. Nanotechnology 2016; 27:082001. [PMID: 26820442 DOI: 10.1088/0957-4484/27/8/082001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Organo-metal halide perovskites (OMHPs) have attracted enormous interest in recent years as materials for application in optoelectronics and solar energy conversion. These hybrid semiconductors seem to have the potential to challenge traditional silicon technology. In this review we will give an account of the recent development in the understanding of the fundamental light-induced processes in OMHPs from charge-photo generation, migration of charge carries through the materials and finally their recombination. Our and other literature reports on time-resolved conductivity, transient absorption and photoluminescence properties are used to paint a picture of how we currently see the fundamental excited state and charge-carrier dynamics. We will also show that there is still no fully coherent picture of the processes in OMHPs and we will indicate the problems to be solved by future research.
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8
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Piatkowski P, Cohen B, Ponseca CS, Salado M, Kazim S, Ahmad S, Sundström V, Douhal A. Unraveling Charge Carriers Generation, Diffusion, and Recombination in Formamidinium Lead Triiodide Perovskite Polycrystalline Thin Film. J Phys Chem Lett 2016; 7:204-10. [PMID: 26703885 DOI: 10.1021/acs.jpclett.5b02648] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
We report on studies of the formamidinium lead triiodide (FAPbI3) perovskite film using time-resolved terahertz (THz) spectroscopy (TRTS) and flash photolysis to explore charge carriers generation, migration, and recombination. The TRTS results show that upon femtosecond excitation above the absorption edge, the initial high photoconductivity (∼75 cm(2) V(-1) s(-1)) remains constant at least up to 8 ns, which corresponds to a diffusion length of 25 μm. Pumping below the absorption edge results in a mobility of 40 cm(2) V(-1) s(-1) suggesting lower mobility of charge carriers located at the bottom of the conduction band or shallow sub-bandgap states. Furthermore, analysis of the THz kinetics reveals rising components of <1 and 20 ps, reflecting dissociation of excitons having different binding energies. Flash photolysis experiments indicate that trapped charge carriers persist for milliseconds.
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Affiliation(s)
- Piotr Piatkowski
- Departamento de Química Física, Facultad de Ciencias Ambientales y Bioquímica, and INAMOL, Universidad de Castilla-La Mancha , Avenida Carlos III, Sin Número, 45071 Toledo, Spain
| | - Boiko Cohen
- Departamento de Química Física, Facultad de Ciencias Ambientales y Bioquímica, and INAMOL, Universidad de Castilla-La Mancha , Avenida Carlos III, Sin Número, 45071 Toledo, Spain
| | - Carlito S Ponseca
- Division of Chemical Physics, Lund University , Box 124, 22100 Lund, Sweden
| | - Manuel Salado
- Abengoa Research, Abengoa, Campus Palmas Altas, C/Energia Solar, 41014 Sevilla, Spain
| | - Samrana Kazim
- Abengoa Research, Abengoa, Campus Palmas Altas, C/Energia Solar, 41014 Sevilla, Spain
| | - Shahzada Ahmad
- Abengoa Research, Abengoa, Campus Palmas Altas, C/Energia Solar, 41014 Sevilla, Spain
| | - Villy Sundström
- Division of Chemical Physics, Lund University , Box 124, 22100 Lund, Sweden
| | - Abderrazzak Douhal
- Departamento de Química Física, Facultad de Ciencias Ambientales y Bioquímica, and INAMOL, Universidad de Castilla-La Mancha , Avenida Carlos III, Sin Número, 45071 Toledo, Spain
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9
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Ponseca CS, Hutter EM, Piatkowski P, Cohen B, Pascher T, Douhal A, Yartsev A, Sundström V, Savenije TJ. Mechanism of Charge Transfer and Recombination Dynamics in Organo Metal Halide Perovskites and Organic Electrodes, PCBM, and Spiro-OMeTAD: Role of Dark Carriers. J Am Chem Soc 2015; 137:16043-8. [DOI: 10.1021/jacs.5b08770] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Carlito S. Ponseca
- Division
of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Eline M. Hutter
- Department
of Chemical Engineering, Delft University of Technology, 2628 BL Delft, The Netherlands
| | - Piotr Piatkowski
- Departamento
de Quimica Fisica, Facultad de Ciencias Ambientales y Bioquimica,
and INAMOL, Universidad de Castilla-La Mancha, Avenida Carlos III, S/N, 45071 Toledo, Spain
| | - Boiko Cohen
- Departamento
de Quimica Fisica, Facultad de Ciencias Ambientales y Bioquimica,
and INAMOL, Universidad de Castilla-La Mancha, Avenida Carlos III, S/N, 45071 Toledo, Spain
| | - Torbjörn Pascher
- Division
of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Abderrazzak Douhal
- Departamento
de Quimica Fisica, Facultad de Ciencias Ambientales y Bioquimica,
and INAMOL, Universidad de Castilla-La Mancha, Avenida Carlos III, S/N, 45071 Toledo, Spain
| | - Arkady Yartsev
- Division
of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Villy Sundström
- Division
of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Tom J. Savenije
- Department
of Chemical Engineering, Delft University of Technology, 2628 BL Delft, The Netherlands
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10
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Tian Y, Merdasa A, Peter M, Abdellah M, Zheng K, Ponseca CS, Pullerits T, Yartsev A, Sundström V, Scheblykin IG. Giant photoluminescence blinking of perovskite nanocrystals reveals single-trap control of luminescence. Nano Lett 2015; 15:1603-8. [PMID: 25706329 DOI: 10.1021/nl5041397] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Fluorescence super-resolution microscopy showed correlated fluctuations of photoluminescence intensity and spatial localization of individual perovskite (CH3NH3PbI3) nanocrystals of size ∼200 × 30 × 30 nm(3). The photoluminescence blinking amplitude caused by a single quencher was a hundred thousand times larger than that of a typical dye molecule at the same excitation power density. The quencher is proposed to be a chemical or structural defect that traps free charges leading to nonradiative recombination. These trapping sites can be activated and deactivated by light.
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Affiliation(s)
- Yuxi Tian
- Chemical Physics, Lund University , Box 124, SE-22100, Lund, Sweden
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11
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Pranculis V, Infahsaeng Y, Tang Z, Devižis A, Vithanage DA, Ponseca CS, Inganäs O, Yartsev AP, Gulbinas V, Sundström V. Charge carrier generation and transport in different stoichiometry APFO3:PC61BM solar cells. J Am Chem Soc 2014; 136:11331-8. [PMID: 25025885 DOI: 10.1021/ja503301m] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
In this paper we studied carrier drift dynamics in APFO3:PC61BM solar cells of varied stoichiometry (2:1, 1:1, and 1:4 APFO3:PC61BM) over a wide time range, from subpicoseconds to microseconds with a combination of ultrafast optical electric field probing and conventional transient integrated photocurrent techniques. Carrier drift and extraction dynamics are strongly stoichiometry dependent: the speed of electron or hole drift increases with higher concentration of PC61BM or polymer, respectively. The electron extraction from a sample with 80% PC61BM takes place during hundreds of picoseconds, but slows down to sub-microseconds in a sample with 33% PC61BM. The hole extraction is less stoichiometry dependent: it varies form sub-nanoseconds to tens of nanoseconds when the PC61BM concentration changes from 33% to 80%. The electron extraction rate correlates with the conversion efficiency of solar cells, leading to the conclusion that fast electron motion is essential for efficient charge carrier separation preventing their geminate recombination.
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Affiliation(s)
- Vytenis Pranculis
- Center for Physical Sciences and Technology , Savanoriu 231, LT-02300 Vilnius, Lithuania
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12
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Savenije TJ, Ponseca CS, Kunneman L, Abdellah M, Zheng K, Tian Y, Zhu Q, Canton SE, Scheblykin IG, Pullerits T, Yartsev A, Sundström V. Thermally Activated Exciton Dissociation and Recombination Control the Carrier Dynamics in Organometal Halide Perovskite. J Phys Chem Lett 2014; 5:2189-94. [PMID: 26279532 DOI: 10.1021/jz500858a] [Citation(s) in RCA: 207] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Solar cells based on organometal halide perovskites have seen rapidly increasing efficiencies, now exceeding 15%. Despite this progress, there is still limited knowledge on the fundamental photophysics. Here we use microwave photoconductance and photoluminescence measurements to investigate the temperature dependence of the carrier generation, mobility, and recombination in (CH3NH3)PbI3. At temperatures maintaining the tetragonal crystal phase of the perovskite, we find an exciton binding energy of about 32 meV, leading to a temperature-dependent yield of highly mobile (6.2 cm(2)/(V s) at 300 K) charge carriers. At higher laser intensities, second-order recombination with a rate constant of γ = 13 × 10(-10) cm(3) s(-1) becomes apparent. Reducing the temperature results in increasing charge carrier mobilities following a T(-1.6) dependence, which we attribute to a reduction in phonon scattering (Σμ = 16 cm(2)/(V s) at 165 K). Despite the fact that Σμ increases, γ diminishes with a factor six, implying that charge recombination in (CH3NH3)PbI3 is temperature activated. The results underline the importance of the perovskite crystal structure, the exciton binding energy, and the activation energy for recombination as key factors in optimizing new perovskite materials.
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Affiliation(s)
- Tom J Savenije
- †Optoelectronic Materials Section, Department of Chemical Engineering, Delft University of Technology, 2628 CN Delft, The Netherlands
| | | | - Lucas Kunneman
- †Optoelectronic Materials Section, Department of Chemical Engineering, Delft University of Technology, 2628 CN Delft, The Netherlands
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13
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Ponseca CS, Savenije TJ, Abdellah M, Zheng K, Yartsev A, Pascher T, Harlang T, Chabera P, Pullerits T, Stepanov A, Wolf JP, Sundström V. Organometal Halide Perovskite Solar Cell Materials Rationalized: Ultrafast Charge Generation, High and Microsecond-Long Balanced Mobilities, and Slow Recombination. J Am Chem Soc 2014; 136:5189-92. [DOI: 10.1021/ja412583t] [Citation(s) in RCA: 977] [Impact Index Per Article: 97.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Carlito S. Ponseca
- Division
of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Tom J. Savenije
- Department
of Chemical Engineering, Delft University of Technology, 2628 BL Delft, The Netherlands
| | - Mohamed Abdellah
- Division
of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
- Department
of Chemistry, Qena Faculty of Science, South Valley University, Qena 83523, Egypt
| | - Kaibo Zheng
- Division
of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Arkady Yartsev
- Division
of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Tobjörn Pascher
- Division
of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Tobias Harlang
- Division
of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Pavel Chabera
- Division
of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Tonu Pullerits
- Division
of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Andrey Stepanov
- GAP-Biophotonics, University of Geneva, 1211 Geneva 4, Switzerland
| | - Jean-Pierre Wolf
- GAP-Biophotonics, University of Geneva, 1211 Geneva 4, Switzerland
| | - Villy Sundström
- Division
of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
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14
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Ponseca CS, Němec H, Vukmirović N, Fusco S, Wang E, Andersson MR, Chabera P, Yartsev A, Sundström V. Electron and Hole Contributions to the Terahertz Photoconductivity of a Conjugated Polymer:Fullerene Blend Identified. J Phys Chem Lett 2012; 3:2442-2446. [PMID: 26292130 DOI: 10.1021/jz301013u] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Time-resolved terahertz spectroscopy was employed for the investigation of charge-transport dynamics in benzothiadiazolo-dithiophene polyfluorene ([2,7-(9,9-dioctyl-fluorene)-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)]) (APFO-3) polymers with various chain lengths and in its monomer form, all blended with an electron acceptor ([6,6]-phenyl-C61-butyric acid methyl ester, PCBM). Upon photoexcitation, charged polaron pairs are created, negative charges are transferred to fullerenes, while positive polarons remain on polymers/monomers. Vastly different hole mobility in polymer and monomer blends allows us to distinguish the hole and electron contributions to the carrier mobility.
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Affiliation(s)
- Carlito S Ponseca
- †Division of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Hynek Němec
- ‡Institute of Physics, Academy of Sciences of the Czech Republic, 182 21 Prague, Czech Republic
| | - Nenad Vukmirović
- §Scientific Computing Laboratory, Institute of Physics Belgrade, University of Belgrade, Pregrevica 118, 11080 Belgrade, Serbia
| | - Sandra Fusco
- ∥Department of Chemical and Biological Engineering, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Ergang Wang
- ∥Department of Chemical and Biological Engineering, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Mats R Andersson
- ∥Department of Chemical and Biological Engineering, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Pavel Chabera
- †Division of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Arkady Yartsev
- †Division of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Villy Sundström
- †Division of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
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Žídek K, Zheng K, Ponseca CS, Messing ME, Wallenberg LR, Chábera P, Abdellah M, Sundström V, Pullerits T. Electron Transfer in Quantum-Dot-Sensitized ZnO Nanowires: Ultrafast Time-Resolved Absorption and Terahertz Study. J Am Chem Soc 2012; 134:12110-7. [DOI: 10.1021/ja3029679] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Karel Žídek
- Department
of Chemical Physics, Lund University, Box 124, 22100 Lund, Sweden
- Solid
State Physics, Lund University, Box 118, 22100 Lund, Sweden
- Center
for Analysis and Synthesis/nCHREM, Lund University, Box 124, 22100 Lund, Sweden
| | - Kaibo Zheng
- Department
of Chemical Physics, Lund University, Box 124, 22100 Lund, Sweden
- Solid
State Physics, Lund University, Box 118, 22100 Lund, Sweden
- Center
for Analysis and Synthesis/nCHREM, Lund University, Box 124, 22100 Lund, Sweden
| | - Carlito S. Ponseca
- Department
of Chemical Physics, Lund University, Box 124, 22100 Lund, Sweden
- Solid
State Physics, Lund University, Box 118, 22100 Lund, Sweden
- Center
for Analysis and Synthesis/nCHREM, Lund University, Box 124, 22100 Lund, Sweden
| | - Maria E. Messing
- Department
of Chemical Physics, Lund University, Box 124, 22100 Lund, Sweden
- Solid
State Physics, Lund University, Box 118, 22100 Lund, Sweden
- Center
for Analysis and Synthesis/nCHREM, Lund University, Box 124, 22100 Lund, Sweden
| | - L. Reine Wallenberg
- Department
of Chemical Physics, Lund University, Box 124, 22100 Lund, Sweden
- Solid
State Physics, Lund University, Box 118, 22100 Lund, Sweden
- Center
for Analysis and Synthesis/nCHREM, Lund University, Box 124, 22100 Lund, Sweden
| | - Pavel Chábera
- Department
of Chemical Physics, Lund University, Box 124, 22100 Lund, Sweden
- Solid
State Physics, Lund University, Box 118, 22100 Lund, Sweden
- Center
for Analysis and Synthesis/nCHREM, Lund University, Box 124, 22100 Lund, Sweden
| | - Mohamed Abdellah
- Department
of Chemical Physics, Lund University, Box 124, 22100 Lund, Sweden
- Solid
State Physics, Lund University, Box 118, 22100 Lund, Sweden
- Center
for Analysis and Synthesis/nCHREM, Lund University, Box 124, 22100 Lund, Sweden
| | - Villy Sundström
- Department
of Chemical Physics, Lund University, Box 124, 22100 Lund, Sweden
- Solid
State Physics, Lund University, Box 118, 22100 Lund, Sweden
- Center
for Analysis and Synthesis/nCHREM, Lund University, Box 124, 22100 Lund, Sweden
| | - Tõnu Pullerits
- Department
of Chemical Physics, Lund University, Box 124, 22100 Lund, Sweden
- Solid
State Physics, Lund University, Box 118, 22100 Lund, Sweden
- Center
for Analysis and Synthesis/nCHREM, Lund University, Box 124, 22100 Lund, Sweden
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Ponseca CS, Yartsev A, Wang E, Andersson MR, Vithanage D, Sundström V. Ultrafast Terahertz Photoconductivity of Bulk Heterojunction Materials Reveals High Carrier Mobility up to Nanosecond Time Scale. J Am Chem Soc 2012; 134:11836-9. [DOI: 10.1021/ja301757y] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Carlito S. Ponseca
- Division of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Arkady Yartsev
- Division of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Ergang Wang
- Department of Chemical and Biological
Engineering/Polymer Technology, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Mats R. Andersson
- Department of Chemical and Biological
Engineering/Polymer Technology, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Dimali Vithanage
- Division of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
| | - Villy Sundström
- Division of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
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Ponseca CS, Pobre R, Estacio E, Sarukura N, Argyros A, Large MC, van Eijkelenborg MA. Transmission of terahertz radiation using a microstructured polymer optical fiber. Opt Lett 2008; 33:902-904. [PMID: 18451933 DOI: 10.1364/ol.33.000902] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A hollow-core microstructured polymer optical fiber was analyzed in the terahertz (THz) region. Spectral analysis of time domain data shows propagation of THz waves in both the hollow-core and the microstructured cladding with a time delay of approximately 20 ps. The frequency range and shift of the transmission bands between different sized waveguides suggested photonic bandgap or resonant guidance. Finite-difference time domain calculations agree relatively well to the experimental transmission results. Propagation losses were estimated to be as low as 0.9 dB/cm.
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Affiliation(s)
- Carlito S Ponseca
- Institute for Molecular Science, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan.
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