Abstract
Self-assembled adlayers of conjugated organic molecules on metallic substrates have gained considerable attention due to promising applications in optoelectronic devices based on conjugated molecules. The performance of molecular electronic devices is significantly influenced by interfacial electronic properties at metal-molecule interfaces. The review summarizes significant findings of photoemission spectroscopy together with low energy electron diffraction and X-ray absorption spectroscopy utilized to characterize electronic properties at the metal-molecule interfaces, providing vital information about the charge transfer and charge injection barriers. The adsorption of transition metal complexes on surfaces with and without graphene buffer layers is another crucial issue for their interconnection between electromagnetic properties. Therefore, fine characterization of these interfaces is mandatory in their applications. Recent results of phthalocyanines deposited on ferromagnetic metal surfaces and graphene buffer layers revealed a substrate-molecular coupling mechanism, which shows a delicate interaction between long-range as well as local chemical bonds.
Keywords: summarizes significant findings of photoemission spectroscopy
References
1. T. Kroll, R. Kraus, R. Schönfelder, V. Yu. Aristov, J. Chem. Phys. 137, 054306 (2012)
2. Heiko Peisert, Johannes Uihlein, Fotini Petraki, Thomas Chassé, Journal of Electron Spectroscopy and Related Phenomena 204 , 49–60 (2015)
3. P. Gargiani, M. Angelucci, C. Mariani, and M. Grazia Betti, Physical Review B 81, 085412 (2010)
4. Xing Lu and K. W. Hipps, J. Phys. Chem. B 1997, 101, 5391-5396
5. F. Petraki,H. Peisert,U. Aygu, F. Latteyer, J. Uihlein, A. Vollmer,and T. Chasse J. Phys. Chem. C 2012, 116, 11110−11116
6. Marom, N., Hod, O., Scuseria, G. E., and Kronik, L. (2008) Electronic structure of copper phthalocyanine: a comparative density functional theory study. The Journal of chemical physics 128, 164107
7. T. Kroll, V.Y. Aristov, O.V. Molodtsova, Y.A. Ossipyan, D.V. Vyalikh, B. Buchner,M. Knupfer, J. Phys. Chem. A 113 (2009) 8917–8922.
8. T. Kroll, R. Kraus, R. Schonfelder, V.Y. Aristov, O.V. Molodtsova, P. Hoffmann,M. Knupfer, J. Chem. Phys. 137 (2012) 054306.
9. F. Evangelista, A. Ruocco, R. Gotter, A. Cossaro, L. Floreano, A. Morgante, F. Crispoldi, M. G. Betti, and C. Mariani, J. Chem. Phys. 131, 174710 2009.
10. Lorenzo Massimi, Simone Lisi, Daniela Pacilè, Carlo Mariani and Maria Grazia Betti ,Beilstein J. Nanotechnol. 2014, 5, 308–312.
11. F. Petraki,H. Peisert,U. Aygu, F. Latteyer, J. Uihlein,\ A. Vollmer,and T. Chasse J. Phys. Chem. C 2014, 118, 10106−10112
12 V. M. Karpan, G. Giovannetti, P. A. Khomyakov, M. Talanana, A. A. Starikov, M. Zwierzycki, J. van den Brink, G.Brocks, and P. J. Kelly, Graphite and Graphene as Perfect Spin Filters. Phys. Rev. Lett., 2007. 99, 176602.
13 Marocchi, S.; Ferriani, P.; Caffrey, N. M.; Manghi, F.; Heinze, S.; Bellini, V. Graphene-mediated exchange coupling between a molecular spin and magnetic substrates, Physical Review B.2018, 88, 14
14 V. M. Karpan, P. A. Khomyakov, A. A. Starikov, G. Giovannetti, M. Zwierzycki, M. Talanana, G. Brocks, J. van den Brink, and P. J. Kelly, Theoretical prediction of perfect spin filtering at interfaces between close-packed surfaces of Ni or Co and graphite or graphene. Phys. Rev. B, 2008. 78, 11
15 Giulia Avvisati, Pierluigi Gargiani, Pierluigi Mondelli, Francesco Presel, Alessandro Baraldi, and Maria Grazia Betti, Phys. Rev. B 2018, 98, 115412
16. K.-F. Braun, V. Iancu, N. Pertaya, K.-H. Rieder, and S.-W. Hla, Decompositional Incommensurate Growth of Ferrocene Molecules on a Au(111) Surface PHYSICAL REVIEW LETTERS PRL 96, 246102 (2006)
17 Dulip Welipitiya, A. Green, J. P. Woods,a) and P. A. Dowbenb Ultraviolet and electron radiation induced fragmentation of adsorbed ferrocene J. Appl. Phys. 79 (11), 1 June 1996
18. Maider Ormaza , Assembly of Ferrocene molecules on metal surfaces revisited, J. Phys. Chem. Lett. 2015, 6, 395−400.
19. K. Svensson, T.R. Bedson, R.E. Palmer Dissociation and desorption of ferrocene on graphite by low energy electron impact Surface Science 451 (2000) 250–254
20. Zhou, L.; Yang, S.-W.; Ng, M.-F.; Sullivan, M. B.; Tan; Shen, L.One-Dimensional Iron-Cyclopentadienyl Sandwich Molecular Wire with Half Metallic, Negative Differential Resistance and High-Spin Filter Efficiency Properties. J. Am. Chem. Soc. 2008, 130, 4023−4027.
21. Liu, R.; Ke, S.-H.; Baranger, H. U.; Yang, W. Organometallic Spintronics: A Dicobaltocene Switch. Nano Lett. 2005, 5, 1959−1962
22. P.A. Dowben, Chemical Physics Letters, 283, 1998. 44–50.