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Cui P, Xue Y. Effects of co-adsorption on interfacial charge transfer in a quantum dot@dye composite. NANOSCALE RESEARCH LETTERS 2021; 16:147. [PMID: 34542732 PMCID: PMC8452815 DOI: 10.1186/s11671-021-03604-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 09/12/2021] [Indexed: 06/13/2023]
Abstract
The sensitive electronic environment at the quantum dot (QD)-dye interface becomes a roadblock to enhancing the energy conversion efficiency of dye-functionalized quantum dots (QDs). Energy alignments and electronic couplings are the critical factors governing the directions and rates of different charge transfer pathways at the interface, which are tunable by changing the specific linkage groups that connect a dye to the QD surface. The variation of specific anchors changes the binding configurations of a dye on the QD surface. In addition, the presence of a co-adsorbent changes the dipole-dipole and electronic interactions between a QD and a dye, resulting in different electronic environments at the interface. In the present work, we performed density functional theory (DFT)-based calculations to study the different binding configurations of N719 dye on the surface of a Cd33Se33 QD with a co-adsorbent D131 dye. The results revealed that the electronic couplings for electron transfer were greater than for hole transfer when the structure involved isocyanate groups as anchors. Such strong electronic couplings significantly stabilize the occupied states of the dye, pushing them deep inside the valence band of the QD and making hole transfer in these structures thermodynamically unfavourable. When carboxylates were involved as anchors, the electronic couplings for hole transfer were comparable to electron transfer, implying efficient charge separation at the QD-dye interface and reduced electron-hole recombination within the QD. We also found that the electronic couplings for electron transfer were larger than those for back electron transfer, suggesting efficient charge separation in photoexcited QDs. Overall, the current computational study reveals some fundamental aspects of the relationship between the interfacial charge transfer for QD@dye composites and their morphologies which benefit the design of QD-based nanomaterials for photovoltaic applications.
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Affiliation(s)
- Peng Cui
- Nanotechnology Research Laboratory, School of Textile Science and Engineering, Jiangnan University, No.1800 Lihu Road, Wuxi, 214122, Jiangsu Province, People's Republic of China.
| | - Yuan Xue
- Nanotechnology Research Laboratory, School of Textile Science and Engineering, Jiangnan University, No.1800 Lihu Road, Wuxi, 214122, Jiangsu Province, People's Republic of China
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2
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Temperton RH, Gibson AJ, Handrup K, O'Shea JN. Adsorption and charge transfer interactions of bi-isonicotinic acid on Ag(111). J Chem Phys 2018; 147:054703. [PMID: 28789551 DOI: 10.1063/1.4996746] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The adsorption and charge transfer dynamics of the organic molecule bi-isonicotinic acid (4,4-dicarboxy-2,2-bipyridine) on single crystal Ag(111) has been studied using synchrotron radiation-based photoemission, x-ray absorption, and resonant core spectroscopies. Measurements for multilayer and monolayer coverage are used to determine the nature of the molecule-surface interactions and the molecular orientation. An experimental density of states for the monolayer with respect to the underlying metal surface is obtained by combining x-ray absorption spectroscopy at the N 1s edge and valence photoemission to measure the unoccupied and occupied valence states, respectively. This shows that the lowest unoccupied molecular orbital in the core-excited state lies energetically below the Fermi level of the surface allowing charge transfer from the metal into this orbital. Resonant photoelectron spectroscopy was used to probe this charge transfer in the context of super-spectator and super-Auger electron transitions. The results presented provide a novel interpretation of resonant core-level spectroscopy to explore ultra-fast charge transfer between an adsorbed organic molecule and a metal surface through the observation of electrons from the metal surface playing a direct role in the core-hole decay of the core-excited molecule.
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Affiliation(s)
- Robert H Temperton
- School of Physics, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Andrew J Gibson
- School of Physics, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Karsten Handrup
- Synchrotron Radiation Research, Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - James N O'Shea
- School of Physics, University of Nottingham, Nottingham NG7 2RD, United Kingdom
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3
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O’Shea JN, Handrup K, Temperton RH, Gibson AJ, Nicolaou A, Jaouen N, Taylor JB, Mayor LC, Swarbrick JC, Schnadt J. Ultra-fast intramolecular vibronic coupling revealed by RIXS and RPES maps of an aromatic adsorbate on TiO2(110). J Chem Phys 2018; 148:204705. [DOI: 10.1063/1.5024862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- James N. O’Shea
- School of Physics, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Karsten Handrup
- Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
| | - Robert H. Temperton
- School of Physics, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Andrew J. Gibson
- School of Physics, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | | | - Nicolas Jaouen
- Synchrotron SOLEIL, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette, France
| | - John B. Taylor
- School of Physics, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Louise C. Mayor
- School of Physics, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Janine C. Swarbrick
- School of Physics, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Joachim Schnadt
- Division of Synchrotron Radiation Research, Department of Physics, Lund University, P.O. Box 118, 221 00 Lund, Sweden
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O’Shea JN, Handrup K, Temperton RH, Gibson AJ, Nicolaou A, Jaouen N. Exploring ultra-fast charge transfer and vibronic coupling with N 1s RIXS maps of an aromatic molecule coupled to a semiconductor. J Chem Phys 2017; 147:134705. [DOI: 10.1063/1.4999135] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- James N. O’Shea
- School of Physics, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Karsten Handrup
- Synchrotron Radiation Research, Department of Physics, Lund University, Box 118, SE-221 00 Lund,
Sweden
| | - Robert H. Temperton
- School of Physics, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Andrew J. Gibson
- School of Physics, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | | | - Nicolas Jaouen
- SOLEIL, Saint-Aubin, BP 48, 91192
Gif-sur-Yvette, France
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5
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Alippi P, Lanzilotto V, Paoletti AM, Mattioli G, Zanotti G, Pennesi G, Filippone F, Cossaro A, Verdini A, Morgante A, Amore Bonapasta A. A Ru–Ru pair housed in ruthenium phthalocyanine: the role of a “cage” architecture in the molecule coupling with the Ag(111) surface. Phys Chem Chem Phys 2017; 19:1449-1457. [DOI: 10.1039/c6cp06094c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A combined experimental and theoretical study on the Ru–Pc dimer on Ag(111) proves surface-to-molecule charge transfer and predicts magnetic moment quenching.
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Affiliation(s)
- Paola Alippi
- CNR-ISM
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche
- I-00015 Monterotondo Scalo
- Italy
| | - Valeria Lanzilotto
- CNR-IOM
- Laboratorio Nazionale TASC
- I-34129 Trieste
- Italy
- Department of Physics
| | - Anna Maria Paoletti
- CNR-ISM
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche
- I-00015 Monterotondo Scalo
- Italy
| | - Giuseppe Mattioli
- CNR-ISM
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche
- I-00015 Monterotondo Scalo
- Italy
| | - Gloria Zanotti
- CNR-ISM
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche
- I-00015 Monterotondo Scalo
- Italy
| | - Giovanna Pennesi
- CNR-ISM
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche
- I-00015 Monterotondo Scalo
- Italy
| | - Francesco Filippone
- CNR-ISM
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche
- I-00015 Monterotondo Scalo
- Italy
| | | | | | - Alberto Morgante
- CNR-IOM
- Laboratorio Nazionale TASC
- I-34129 Trieste
- Italy
- Department of Physics
| | - Aldo Amore Bonapasta
- CNR-ISM
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche
- I-00015 Monterotondo Scalo
- Italy
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Thermal and UV Hydrosilylation of Alcohol-Based Bifunctional Alkynes on Si (111) surfaces: How surface radicals influence surface bond formation. Sci Rep 2015; 5:11299. [PMID: 26067470 PMCID: PMC4650888 DOI: 10.1038/srep11299] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 05/14/2015] [Indexed: 11/18/2022] Open
Abstract
Using two different hydrosilylation methods, low temperature thermal and UV initiation, silicon (111) hydrogenated surfaces were functionalized in presence of an OH-terminated alkyne, a CF3-terminated alkyne and a mixed equimolar ratio of the two alkynes. XPS studies revealed that in the absence of premeditated surface radical through low temperature hydrosilylation, the surface grafting proceeded to form a Si-O-C linkage via nucleophilic reaction through the OH group of the alkyne. This led to a small increase in surface roughness as well as an increase in hydrophobicity and this effect was attributed to the surficial etching of silicon to form nanosize pores (~1–3 nm) by residual water/oxygen as a result of changes to surface polarity from the grafting. Furthermore in the radical-free thermal environment, a mix in equimolar of these two short alkynes can achieve a high contact angle of ~102°, comparable to long alkyl chains grafting reported in literature although surface roughness was relatively mild (rms = ~1 nm). On the other hand, UV initiation on silicon totally reversed the chemical linkages to predominantly Si-C without further compromising the surface roughness, highlighting the importance of surface radicals determining the reactivity of the silicon surface to the selected alkynes.
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Gibson AJ, Temperton RH, Handrup K, Weston M, Mayor LC, O'Shea JN. Charge transfer from an adsorbed ruthenium-based photosensitizer through an ultra-thin aluminium oxide layer and into a metallic substrate. J Chem Phys 2015; 140:234708. [PMID: 24952561 DOI: 10.1063/1.4882867] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The interaction of the dye molecule N3 (cis-bis(isothiocyanato)bis(2,2-bipyridyl-4,4'-dicarbo-xylato)-ruthenium(II)) with the ultra-thin oxide layer on a AlNi(110) substrate, has been studied using synchrotron radiation based photoelectron spectroscopy, resonant photoemission spectroscopy, and near edge X-ray absorption fine structure spectroscopy. Calibrated X-ray absorption and valence band spectra of the monolayer and multilayer coverages reveal that charge transfer is possible from the molecule to the AlNi(110) substrate via tunnelling through the ultra-thin oxide layer and into the conduction band edge of the substrate. This charge transfer mechanism is possible from the LUMO+2 and 3 in the excited state but not from the LUMO, therefore enabling core-hole clock analysis, which gives an upper limit of 6.0 ± 2.5 fs for the transfer time. This indicates that ultra-thin oxide layers are a viable material for use in dye-sensitized solar cells, which may lead to reduced recombination effects and improved efficiencies of future devices.
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Affiliation(s)
- Andrew J Gibson
- School of Physics and Astronomy and Nottingham Nanotechnology and Nanoscience Centre (NNNC), University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Robert H Temperton
- School of Physics and Astronomy and Nottingham Nanotechnology and Nanoscience Centre (NNNC), University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Karsten Handrup
- School of Physics and Astronomy and Nottingham Nanotechnology and Nanoscience Centre (NNNC), University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Matthew Weston
- School of Physics and Astronomy and Nottingham Nanotechnology and Nanoscience Centre (NNNC), University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Louise C Mayor
- School of Physics and Astronomy and Nottingham Nanotechnology and Nanoscience Centre (NNNC), University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - James N O'Shea
- School of Physics and Astronomy and Nottingham Nanotechnology and Nanoscience Centre (NNNC), University of Nottingham, Nottingham NG7 2RD, United Kingdom
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8
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Khung YL, Ngalim SH, Scaccabarozzi A, Narducci D. Formation of stable Si-O-C submonolayers on hydrogen-terminated silicon(111) under low-temperature conditions. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2015; 6:19-26. [PMID: 25671148 PMCID: PMC4311582 DOI: 10.3762/bjnano.6.3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 11/28/2014] [Indexed: 05/30/2023]
Abstract
In this letter, we report results of a hydrosilylation carried out on bifunctional molecules by using two different approaches, namely through thermal treatment and photochemical treatment through UV irradiation. Previously, our group also demonstrated that in a mixed alkyne/alcohol solution, surface coupling is biased towards the formation of Si-O-C linkages instead of Si-C linkages, thus indirectly supporting the kinetic model of hydrogen abstraction from the Si-H surface (Khung, Y. L. et al. Chem. - Eur. J. 2014, 20, 15151-15158). To further examine the probability of this kinetic model we compare the results from reactions with bifunctional alkynes carried out under thermal treatment (<130 °C) and under UV irradiation, respectively. X-ray photoelectron spectroscopy and contact angle measurements showed that under thermal conditions, the Si-H surface predominately reacts to form Si-O-C bonds from ethynylbenzyl alcohol solution while the UV photochemical route ensures that the alcohol-based alkyne may also form Si-C bonds, thus producing a monolayer of mixed linkages. The results suggested the importance of surface radicals as well as the type of terminal group as being essential towards directing the nature of surface linkage.
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Affiliation(s)
- Yit Lung Khung
- University of Milan-Bicocca, Department of Materials Science, Via R. Cozzi 53, I-20125 Milan, Italy
| | - Siti Hawa Ngalim
- Regenerative Medicine Cluster, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, Penang, Malaysia
| | - Andrea Scaccabarozzi
- University of Milan-Bicocca, Department of Materials Science, Via R. Cozzi 53, I-20125 Milan, Italy
| | - Dario Narducci
- University of Milan-Bicocca, Department of Materials Science, Via R. Cozzi 53, I-20125 Milan, Italy
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9
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Cao L, Gao XY, Wee ATS, Qi DC. Quantitative femtosecond charge transfer dynamics at organic/electrode interfaces studied by core-hole clock spectroscopy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:7880-7888. [PMID: 24692009 DOI: 10.1002/adma.201305414] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 02/28/2014] [Indexed: 06/03/2023]
Abstract
Organic semiconductor materials have important applications in organic electronics and other novel hybrid devices. In these devices, the transport of charge carriers across the interfaces between organic molecules and electrodes plays an important role in determining the device performance. Charge transfer dynamics at the organic/electrode interface usually occurs at the several femtoseconds timescale, and quantitative charge transfer dynamics data can been inferred using synchrotron-based core-hole clock (CHC) spectroscopy. In this research news, we have reviewed recent progress in the applications of CHC spectroscopy on the quantitative characterization of charge transfer dynamics at organic/electrode interfaces. By examining charge transfer dynamics at different types of interface, from weakly interacting van der Waals-type interfaces to interfaces with strong covalent bonds, we discuss a few factors that have been found to affect the charge transfer dynamics. We also review the application of CHC spectroscopy to quantify through-bonds and through-space charge transport in organic molecules.
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Affiliation(s)
- Liang Cao
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117542, Singapore, Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
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10
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Honda M, Yanagida M, Han L, Miyano K. Investigation of the influence of coadsorbent dye upon the interfacial structure of dye-sensitized solar cells. J Chem Phys 2014; 141:174709. [PMID: 25381539 DOI: 10.1063/1.4900640] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The interface between Ru(tcterpy)(NCS)3TBA2 [black dye (BD); tcterpy = 4,4',4″-tricarboxy-2,2':6',2″-terpyridine, NCS = thiocyanato, TBA = tetrabutylammonium cation] and nanocrystalline TiO2, as found in dye-sensitized solar cells, is investigated by soft-X-ray synchrotron radiation and compared with the adsorption structure of cis-Ru(Hdcbpy)2(NCS)2TBA2 (N719; dcbpy = 4,4'-dicarboxy-2,2'-bipyridine) on TiO2 to elucidate the relationship between the adsorption mode of BD and the photocurrent with and without coadsorbed indoline dye D131. The depth profile is characterized with X-ray photoelectron spectroscopy and S K-edge X-ray absorption fine structure using synchrotron radiation. Both datasets indicate that one of the isothiocyanate groups of BD interacts with TiO2 via its S atom when the dye is adsorbed from a single-component solution. In contrast, the interaction is slightly suppressed when D131 is coadsorbed, indicated by the fact that the presence of D131 changes the adsorption mode of BD. Based upon these results, the number of BD dye molecules interacting with the substrate is shown to decrease by 10% when D131 is coadsorbed, and the dissociation is shown to be related to the short-circuit photocurrent in the 600-800 nm region. The design of a procedure to promote the preferential adsorption of D131 therefore leads to an improvement of the short-circuit current and conversion efficiency.
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Affiliation(s)
- M Honda
- Global Research Center for Environment and Energy based on Nanomaterials Science (GREEN), National Institute of Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - M Yanagida
- Global Research Center for Environment and Energy based on Nanomaterials Science (GREEN), National Institute of Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - L Han
- Photovoltaic Materials Unit, NIMS, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - K Miyano
- Global Research Center for Environment and Energy based on Nanomaterials Science (GREEN), National Institute of Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
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11
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Neppl S, Shavorskiy A, Zegkinoglou I, Fraund M, Slaughter DS, Troy T, Ziemkiewicz MP, Ahmed M, Gul S, Rude B, Zhang JZ, Tremsin AS, Glans PA, Liu YS, Wu CH, Guo J, Salmeron M, Bluhm H, Gessner O. Capturing interfacial photoelectrochemical dynamics with picosecond time-resolved X-ray photoelectron spectroscopy. Faraday Discuss 2014; 171:219-41. [DOI: 10.1039/c4fd00036f] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Time-resolved core-level spectroscopy using laser pulses to initiate and short X-ray pulses to trace photoinduced processes has the unique potential to provide electronic state- and atomic site-specific insight into fundamental electron dynamics in complex systems. Time-domain studies using transient X-ray absorption and emission techniques have proven extremely valuable to investigate electronic and structural dynamics in isolated and solvated molecules. Here, we describe the implementation of a picosecond time-resolved X-ray photoelectron spectroscopy (TRXPS) technique at the Advanced Light Source (ALS) and its application to monitor photoinduced electron dynamics at the technologically pertinent interface formed by N3 dye molecules anchored to nanoporous ZnO. Indications for a dynamical chemical shift of the Ru3d photoemission line originating from the N3 metal centre are observed ∼30 ps after resonant HOMO–LUMO excitation with a visible laser pump pulse. The transient changes in the TRXPS spectra are accompanied by a characteristic surface photovoltage (SPV) response of the ZnO substrate on a pico- to nanosecond time scale. The interplay between the two phenomena is discussed in the context of possible electronic relaxation and recombination pathways that lead to the neutralisation of the transiently oxidised dye after ultrafast electron injection. A detailed account of the experimental technique is given including an analysis of the chemical modification of the nano-structured ZnO substrate during extended periods of solution-based dye sensitisation and its relevance for studies using surface-sensitive spectroscopy techniques.
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Affiliation(s)
- Stefan Neppl
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley, USA
| | - Andrey Shavorskiy
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley, USA
| | - Ioannis Zegkinoglou
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley, USA
| | - Matthew Fraund
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley, USA
| | - Daniel S. Slaughter
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley, USA
| | - Tyler Troy
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley, USA
| | | | - Musahid Ahmed
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley, USA
| | - Sheraz Gul
- Advanced Light Source
- Lawrence Berkeley National Laboratory
- Berkeley, USA
- Department of Chemistry and Biochemistry
- University of California Santa Cruz
| | - Bruce Rude
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley, USA
| | - Jin Z. Zhang
- Department of Chemistry and Biochemistry
- University of California Santa Cruz
- Santa Cruz, USA
| | - Anton S. Tremsin
- Space Sciences Laboratory
- University of California Berkeley
- Berkeley, USA
| | - Per-Anders Glans
- Advanced Light Source
- Lawrence Berkeley National Laboratory
- Berkeley, USA
| | - Yi-Sheng Liu
- Advanced Light Source
- Lawrence Berkeley National Laboratory
- Berkeley, USA
| | - Cheng Hao Wu
- Materials Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley, USA
- Department of Chemistry
- University of California Berkeley
| | - Jinghua Guo
- Advanced Light Source
- Lawrence Berkeley National Laboratory
- Berkeley, USA
| | - Miquel Salmeron
- Materials Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley, USA
| | - Hendrik Bluhm
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley, USA
| | - Oliver Gessner
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley, USA
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Pastore M, De Angelis F. Modeling Materials and Processes in Dye-Sensitized Solar Cells: Understanding the Mechanism, Improving the Efficiency. Top Curr Chem (Cham) 2013; 352:151-236. [DOI: 10.1007/128_2013_468] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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13
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Hauptmann N, Hamann C, Tang H, Berndt R. Switching and charging of a ruthenium dye on Ag(111). Phys Chem Chem Phys 2013; 15:10326-30. [DOI: 10.1039/c3cp51023a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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14
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Weston M, Handrup K, Reade TJ, Champness NR, O'Shea JN. Experimental observation of sub-femtosecond charge transfer in a model water splitting dye-sensitized solar cell. J Chem Phys 2012; 137:224706. [DOI: 10.1063/1.4770496] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
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15
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Britton AJ, Weston M, O'Shea JN. Charge transfer from an aromatic adsorbate to a semiconductor TiO(2) surface probed on the femtosecond time scale with resonant inelastic x-ray scattering. PHYSICAL REVIEW LETTERS 2012; 109:017401. [PMID: 23031129 DOI: 10.1103/physrevlett.109.017401] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Indexed: 06/01/2023]
Abstract
The excited state charge transfer dynamics of an aromatic adsorbate to a rutile TiO(2) surface is studied using a core-hole clock (CHC) implementation of resonant inelastic x-ray scattering (RIXS) on the low femtosecond time scale. Comparing the abundance of the elastic and inelastic radiative N 1s core-hole decay channels provides a method for probing ultrafast injection of electrons resonantly excited to unoccupied molecular orbitals that lie above the conduction band of the substrate on the time scale of the core-hole lifetime. The method is analogous to the CHC implementation of resonant photoemission, but in the case of RIXS it is the emitted soft x-ray photons that are measured rather than photoelectrons, leaving the probed molecules in a neutral rather than ionized final state. The results reveal a charge transfer time of 2.8±1.5 fs from the lowest unoccupied molecular orbital +1 state of adsorbed bi-isonicotinic acid to the conduction band of the TiO(2) substrate.
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Affiliation(s)
- Andrew J Britton
- School of Physics and Astronomy and Nottingham Nanotechnology and Nanoscience Centre, University of Nottingham, Nottingham, NG7 2RD, United Kingdom
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16
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Martsinovich N, Ambrosio F, Troisi A. Adsorption and electron injection of the N3 metal–organic dye on the TiO2 rutile (110) surface. Phys Chem Chem Phys 2012; 14:16668-76. [DOI: 10.1039/c2cp42350b] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Cao L, Wang YZ, Chen TX, Zhang WH, Yu XJ, Ibrahim K, Wang JO, Qian HJ, Xu FQ, Qi DC, Wee ATS. Charge transfer dynamics of 3,4,9,10-perylene-tetracarboxylic-dianhydride molecules on Au(111) probed by resonant photoemission spectroscopy. J Chem Phys 2011; 135:174701. [DOI: 10.1063/1.3656834] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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18
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Britton AJ, Weston M, Taylor JB, Rienzo A, Mayor LC, O’Shea JN. Charge transfer interactions of a Ru(II) dye complex and related ligand molecules adsorbed on Au(111). J Chem Phys 2011; 135:164702. [DOI: 10.1063/1.3656682] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Weston M, Reade TJ, Britton AJ, Handrup K, Champness NR, O'Shea JN. A single centre water splitting dye complex adsorbed on rutile TiO2(110): Photoemission, x-ray absorption, and optical spectroscopy. J Chem Phys 2011; 135:114703. [DOI: 10.1063/1.3637497] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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