• 2019

  • Sebastian Hahn, Julian Butscher, Qingzhi An, Angelina Jocic, Olena Tverskoy, Marcus Richter, Xinliang Feng, Frank Rominger, Yana Vaynzof, Uwe H. F. Bunz, "Azaarene Dimers" , In Chemistry – A European Journal, Wiley, vol. 25, no. 30, pp. 7285–7291, May 2019. [doi] [Bibtex & Downloads]

Former Publications

 

2020

99) "Inkjet-Printed Micrometer-Thick Perovskite Solar Cells with large Columnar Grains" E. Eggers, F. Schackmar, T. Abzieher, Q. Sun, U. Lemmer, Y. Vaynzof B. S. Richards, G. Hernansez-Sosa and U. W. Paetzold, Adv. Energy Mater., just accepted (2020).

98) "Fluorination of Organic Spaer Impacts on the Structural and Optical Response of 2D Perovskites" I. Garcia Benito, C. Quarti, V. I. E. Queloz, Y. J. Hofstetter, D. Becker-Koch, P. Caprioglio, D. Neger, S. Orlandi, M. Cavazzini, G. Pozzi, J. Even, M. K. Nazeeruddin, Y. Vaynzof and G. Grancini, Front. Chem., just accepted (2020).

97) "Tuning Spin Current Injection at Ferromagnet-Nonmagnet Interfaces by Molecular Design" A. Wittmann, G. Schweicher, K. Broch, J. Novak, V. Lami, D. Cornil, E. R. McNellis, O. Zadvorna, D. Venkateshvaran, K. Takimiya, Y. H. Geerts, J. Cornil, Y. Vaynzof, J. Sinova, S. Watanave and H. Sirringhaus, Phys. Rev. Lett., just accepted (2020).

96) "Enhancing the Open-Circuit Voltage of Perovskite Solar Cells by Embedding Molecular Dipoles within Their Hole-Blocking Layer" J. F. Butscher, S. Introrp, J. Kress, Q. An, Y. J. Hofstetter, N. Hoppchen, F. Paulus, U. H. F. Bunz, N. Tessler and Y. Vaynzof, ACS Appl. Mater. Interfaces, just accepted (2020).

95) "Ligand Dependent Oxidation Dictates the Performance Evolution of High Efficiency PbS Quantum Dot Solar Cells" D. Becker-Koch, M. Albaladejo Siguan, V. Lami, F. Paulus, X. Xiang, Z. Chen and Y. Vaynzof, Sustainable Energy Fuels, just accepted (2020).

 

2019

94) "Efficient and Stable PbS Quantum Dot Solar Cells by Triple Cation Perovskite Passivation'"  M. Albaladejo Siguan, D. Becker-Koch, A. D. Taylor, Q. Sun, V. Lami, P. Goldberg-Oppenheimer, F. Paulus and Y. Vaynzof, ACS Nano, just accepted (2019).

93) "Azaacene Dimers - Novel Acceptor Materials with a 'Twist'" L. Ahrens, J. F. Butscher, V. Brosius, F. Rominger, J. Freudenberg, Y. Vaynzof and U. H. F. Bunz, Chem. Eur. J., just accepted (2019).

92) "Energy Transfer to a Stable Donor Suppresses Degradation in Organic Solar Cells" A. Weu, R. Kumar, J. F. Butscher, V. Lami, F. Paulus, A. A. Bakulin and Y. Vaynzof, Adv. Funct. Mater., just accepted (2019).

91) "Liquid Exfoliation of Ni2P2S6: Structural Characterisation, Size-Dependent Properties and Degradation" K. Synnatschke, S. Shao, J. van Dinter, Y. J. Hofstetter, D. J. Kelly, S. Grieger, S. J. Haigh, Y. Vaynzof, W. Bensch and C. Backes, Chem. Mater., just accepted (2019).

90) "Sequentially Deposited versus Conventional Nonfullerene Organic Solar Cells: Interfacial Trap States, Vertical Stratification and Exciton Dissociation" J. Zhang, M. H. Futscher, V. Lami, F. U. Kosasih, C. Cho, Q. Gu, A. Sadhanala, A. J. Pearson, B. Kan, G. Divitini, X. Wan, D. Credgington, N. C. Greenham, Y. Chen, C. Ducati, B. Ehrler, Y. Vaynzof, R. H. Friend and A. Bakulin, Adv. Energy Materials, just accepted (2019).

89) "The effect of Side-Chain Length on the Microstructure and Processing Window of Zone-cast Naphthalene-Based Bispentalenes" K. P. Goetz, K. Sekinec, F. Paulus, Y. Zhong, D. Roth, D. Becker-Koch, Y. Hofstetter, E. Michel, L. Reichert, F. Rominger, M. Rudolph, S. Huettner, Y. Vaynzof, E. M. Herzig, A. S. K. Hashmi and J. Zaumseil, J. Mater. Chem, C., just accepted (2019).

88) "Stability of Chemically Doped Nanotube-Silicon Heterjunction Solar Cells: Role of Oxides at the Carbon-Silicon Interface" D. Tune, H. Hiroyuki, V. Lami, R. Headrick, M. Pasqualli, Y. Vaynzof, S. Noda, H. Suguru, E. Hobbie, B. Flavel, ACS. Appl. Energy Mater., in press (2019).

87) “Metal-Assisted Salphen Organic Frameworks (MaSOFs) with Trinuclear Metal Units for Synergic Gas Sorption" S. Elbert, W.-S. Zhang, Y. Vaynzof, N. Oberhof, M. Bernhardt, M. Pernpointner, F. Rominger, R. Schroeder and M. Mastalerz, Chem. Mater., in press (2019).

86) “Room Temperature Stimulated Emission and Lasing in Recrystallized Cesium Lead Bromide Perovkite Thin Films" N. Pourdavoud, T. Haeger, A. Mayer, P. J. Cegielski, A. L. Giesecke, R. Heiderhoff, S. Olthof, S. Zaefferer, I. Shutsko, A. Henkel, D. Becker-Koch, M. Stein, M. Cehovski, O. Charfi, H.-H. Johannes, D. Rogalla, M. Lemme, M. Koch, Y. Vaynzof, K. Meerholz, W. Kowalsky, H.-C. Scheer, P. Görrn and T. Riedl, Adv. Mater., in press (2019).

85) “Effect of Precursor Stoichiometry on the Performance and Stability of MAPbBr3 Photovoltaic Devices" L. Falk, K. Goetz, V. Lami, Q. An, P. Fassl, J. Herkel, F. Thome, A. Taylor, F. Paulus and Y. Vaynzof, Energy Technol., in press (2019).

84) “Visualising the Vertical Energetic Landscape in Organic Photovoltaics" V. Lami, A. Weu, J. Zhang, Y. Chen, Z. Fei, M. Heeney, R. H. Friend and Y. Vaynzof, Joule, in press (2019).

83) “Enhancing the Open-Circuit Voltage of Perovskite Solar Cells by up to 120 mV using π-Extended Phosphoniumfluorene Electrolytes as Hole Blocking Layers" Q. An, Q. Sun, A. WeuD. Becker-Koch, F. Paulus, S. Arndt, F. Stuck, A. S. K. Hashmi, N. Tessler and Y. Vaynzof, Adv. Energy Materials, just accepted (2019).

82) “Quantifying the Damage Induced by XPS Depth Profiling of Organic Conjugated Polymers" Y. J. Hofstetter and Y. Vaynzof, ACS Appl. Polymer Mater., just accepted (2019).

81) “Azaarene-dimers" S. Hahn, J. ButscherQ. An, A. Jocic, O. Tverskoy, M. Richter, X. Feng, R. Rominger, Y. Vaynzof and U. H. F. Bunz, Chem. Eur. J., just accepted (2019).

80) “Hierarchical MoS2-Carbon Porous Nanorods towards Atomic Interfacial Engineering for High Performance Lithium Storage" Z. Li, A. Ottmann, Q. Sun, A. Kast, K. Wang, T. Zhang, H.-P. Meyer, C. Backes, C. Kuebel, R. Schroeder, J. Xiang, Y. Vaynzof and R. Klingeler, J. Mater. Chem. A, just accepted (2019).

79) “Oxygen-induced Doping as a Degradation Mechanism in Highly Efficient Polymer Organic Solar Cells" A. Weu, J. KressF. PaulusD. Becker-Koch, V. Lami, A. Bakulin and Y. Vaynzof, ACS Appl. Energy Mater., just accepted (2019).

78) “Effect of Density of Surface Defects on Photoluminescence Properties of MAPbI3 Perovskite Films" P. Fassl, Y. Zakharko, L. M. Falk, K. Goetz, F. Paulus, A. Taylor, J. Zaumseil and Y. Vaynzof, J. Mater. Chem C, just accepted (2019).

77) “Doping Induced Performance Enhancement in Inverted Small Molecule Organic Photodiodes Operating below 1V Reverse Bias - Towards Compatibility with CMOS for Imaging Applications" H. Schekhar, V. Lami, O. Solomeshch, A. Fenigstein, L. Tomer, L. Becky, Y. Vaynzof and N. Tessler, Org. Electron. 67, 1 (2019).

76) “Probing Charge Transfer States at Organic and Hybrid Internal Interfaces by Photothermal Deflection Spectroscopy" D. Becker-KochB. RivkinF. Paulus, H. Xiang, Y. Dong, Z. Chen, A. Bakulin and Y. Vaynzof, J. Phys. Condens. Mater. 31, 124001 (2019).

75) “The Effect of Crystal Grain Orientation on the Rate of Ionic Transport in Perovskite Polycrystalline Thin Films" P. FasslS. Ternes, V. Lami, Y. Zakharko, D. Heimfarth, P. Hopkinson, F. Paulus, A. Taylor, J. Zaumseil and Y. Vaynzof, ACS Appl. Mater. Interfaces 11 (2), 2490 (2019).

 

2018

74) “Electroluminescence from Solution-Processed Pinhole-Free nm-Thickness Layers of Conjugated Polymers" C. Newby, T. Piachaud, Y. Vaynzof, J.-K. Lee, S.-H. Jung, A. Sadhanala, C. Ober and R. Friend, Nano Lett. 18 (9), 5382 (2018).

73) “Fractional Deviations in Precursor Stoichiometry Dictate the Properties, Performance and Stability of Perovskite Photovoltaic Devices" P. Fassl, V. Lami, A. Bausch, Z. Wang, M. Klug, H. Snaith and Y. Vaynzof, Energy Environ. Sci. 11, 3380 (2018).

72) “Effect of Ion Migration Induced Electrode Degradation on the Operational Stability of Perovskite Solar Cells" B. RivkinP. FasslQ. SunA. Taylor, Z. Chen and Y. Vaynzof, ACS Omega 3 (8), 10042 (2018).

71) “Large-Scale Compositional and Electronic Inhomogeneities in CH3NH3PbI3 Perovskites and Their Effect on Device Performance" Q. Sun, P. Fassl and Y. Vaynzof, ACS Appl. Energy Mater. 1 (6), 2410 (2018).

70) “Efficient n-Doping and Hole-Blocking in Single-Walled Carbon Nanotube Transistors with 1,2,4,5-Tetrakis(tetramethyl-guanidino)benzene" S. Schneider, M. Brohmann, R. Lorenz, Y. J. Hofstetter, M. Rother, E. Sauter, M. Zharnikov, Y. Vaynzof, H.-J. Himmel and J. Zaumseil, ACS Nano 12 (6), 5895 (2018).

69) “Monolayer-Enriched Production of Au-decorated WSNanosheets via Defect Engineering" J. R. Dunkin, P. Lafargue, T. M. Higgins, G. T. Forcherio, M. Benamara, N. McEvoy, D. K. Roper, J. N. Coleman, Y. Vaynzof and C. Backes, MRS Advances  1-6 (2018).

68) “Field-Assisted Dissociation in Highly Efficient PffBT4T-2OD:Fullerene Organic Solar Cells" A. Weu, T. Hopper, V. Lami, J. Kress, A. Bakulin and Y. Vaynzof, Chem. Mater. 30, 8, 2660 (2018).

67) “Triptycene-based Porous Metal-Assisted Salphen Organic Frameworks - Influence of the Metal-Ions on Formation and Gas-sorption" D. Reinhard, W.-S. Zhang, Y. Vaynzof, F. Rominger, R. R. Schroeder and M. Mastalerz, Chem. Mater. 30, 8, 2781 (2018).

66) “The Gold(I)-Mediated Domino Reaction to Fused Diphenyl Phosphoniumfluorenes: Mechanistic Consequaences for Gold-Catalyzed Hydroarylations and the Application in Solar Cells" S. Arndt, J. Borstelmann, R. E. Saatlo, P. W. Antoni, F. Rominger, M. Rudolph, Q. AnY. Vaynzof, and A. S. Hashmi, Chem. Eur. J. 24, 7882 (2018).

65) “Triptycenyl-phenazino-thiadiazole as Acceptor in Organic Bulk-Heterojunction Solar Cells" D. Leibold, V. Lami, Y. J. Hofstetter, D. Becker-Koch, A. Weu, P. Biegger, F. Paulus, U. Bunz, P. E. Hopkinson, A. Bakulin and Y. Vaynzof, Org. Electron. 57, 285 (2018).

64) “Preventing Hysteresis in Perovskite Solar Cells by Undoped Charge Blocking Layers" N. Tessler and Y. Vaynzof, ACS Appl. Energy Mater. 1 (2), 676 (2018).

63) “Production of monolayer-rich gold-decorated 2H-WSnanosheets by defect engineering" J. R. Dunkin, P. Lafargue, T. M. Higgins, G. T. Forcherio, M. Benamara, N. McEvoy, D. K. Roper, J. N. Coleman, Y. Vaynzof and C. Backes, Nature 2D Materials and Applications 1, 43 (2018).

 

2017

62) “Triptycene-Bisaroyleneimidazoles as Non-Fullerene Acceptors - The Missing Links" E. H. Menke, D. Leibold, F. J. Rominger, Y. Vaynzof and M. Mastalerz, ChemPlusChem 82 (12), 1390.

61) “Gold Nanoparticles Physicochemically Bonded onto Tungsten Disulfide Nanosheet Edges Exhibit Augmented Plasmon Damping" G. T. Forcherio, J. R. Dunklin, C. Bakes, Y. Vaynzof, M. Benamara and D. K. Roper, AIP Advances 7, 075103 (2017).

60) “High Performance Planar Perovskite Solar Cells by ZnO Electron Transport Layer Engineering" Q. An, P. Fassl, Y. J. HofstetterD. Becker-Koch, A. Bausch, P. E. Hopkinson and Y. Vaynzof, Nano Energy 39, 400 (2017).

 

2012

17) “Immobilization of a molecular cobaloxime catalyst for hydrogen evolution on a mesoporous metal oxide electrode”, N. M. Muresan, J. Willkomm, D. Mersch, Y. Vaynzof and E. Reisner, Angew. Chem. 124 (51), 12921 (2012)

16) “White-light bias external quantum efficiency measurements of standard and inverted P3HT: PCBM photovoltaic cells”, T. J. K. Brenner, Y. Vaynzof, Z. Li, D. Kabra, R.H. Friend, and C.R. McNeill, J. Phys. D: Appl. Phys. 45 (41), 415101 (2012)

15) “Compositional and morphological studies of polythiophene/polyfluorene blends in inverted architecture hybrid solar cells”, Y. Vaynzof, T. J. K. Brenner, D. Kabra, H. Sirringhaus and R. H. Friend, Adv. Funct. Mater. 22, 2418 (2012)

14) “Recent advances in hybrid organic-inorganic optoelectronics”, Y. Vaynzof, D. Kabra, T. J. K. Brenner, H. Sirringhaus and R. H. Friend, Isr. J. Chem. 52 (6), 496 (2012) (invited paper)

13) “Direct observation of photoinduced bound charge-pair states at organic-inorganic semiconductor interface”Y. Vaynzof, A. Bakulin, S. Geniles, H. Sirringhaus and R. H. Friend, Phys. Rev. Lett. 108 (24), 246605 (2012)

12) “In situ measurement of exciton energy in hybrid-singlet fission solar cells”, B. Ehler, B. J. Walker, M. Bohm, M. W. B. Wilson, Y. Vaynzof, R. H. Friend and N. C. Greenham, Nat. Commun. 3, 1019 (2012)

 

2011

11) “Surface directed spinodal decomposition in poly[3-hexylthiophene] and C61-butyric acid methyl ester blends”, Y. Vaynzof, D. Kabra, L. Zhao, L. L. Chua, U. Steiner and R. H. Friend, ACS Nano 5, 329 (2011).

10) “Improved electron injection in poly(9,9′-dioctylfluorene)- co-benzothiodiazole via cesium carbonate by means of coannealing”, Y. Vaynzof, D. Kabra, L. L. Chua o and R. H. Friend, Appl. Phys. Lett. 98, 113306 (2011).

9) “Doping of organic semiconductors using molybdenum trioxide: a quantitative time-dependant electrical and spectroscopic study”, M. Gwinner, R. Di Pietro, Y. Vaynzof, K. J. Greenberg, P. K. H. Ho, R. H. Friend and H. Sirringhaus, , Adv. Funct. Mater. 21, 1432 (2011).

8) “Excitonic Materials for Hybrid Solar Cells and Energy Efficient Lighting”, D. Kabra, L. P. Lu, Y. Vaynzof, M. Song, H. J. Snaith and R. H. Friend, AIP Conference Proceedings 1349, 60 (2011).

 

2010

7) “Solution-processed zinc oxide as high-performance air-stable electron injector in organic ambipolar light-emitting field-effect transistors”, M. C. Gwinner, Y. Vaynzof, K. K. Banger, P. K. H. Ho, R. H. Friend and H. Sirringhaus, Adv. Funct. Mater. 20, 3457 (2010).

6) “Improved photoinduced charge carriers separation in organic-inorganic hybrid photovoltaic devices”, Y. Vaynzof, D. Kabra, L. Zhao, P. K. H. Ho, A. T.-S. Wee and R. H. Friend, Appl. Phys. Lett. 97, 033309 (2010)

5) “Target detection and verification via airborne hyperspectral and high-resolution imagery processing and fusion”, D. E. Bar, K. Wolowelsky, Y. Swirski, Z. Figov, A. Michaeli, Y. Vaynzof, Y. Abramovitz, A. Ben-Dov, O. Yaron, L. Weizman and R. Adar, IEEE Sensors 10, 3, 707 (2010).

 

2009

4) “Current voltage relation of amorphous materials based pn diodes—the effect of degeneracy in organic polymers/molecules”, Y. Vaynzof, Y. Preezant and N.  Tessler, J. Appl. Phys. 8, 084503 (2009).

3) “How photoelectron spectroscopy and quantum chemical studies can help understanding the magnetic properties of molecules: an example from the class of Cu(II)−bis(oxamato) complexes”, B. Bräuer, M. Grobosch, M. Knupfer, F. Weigend, Y. Vaynzof, A. Kahn, T. Rüffer and G. Salvan,  J. Phys. Chem. B 113 10051 (2009).

2) “Electronic and magnetic properties of Ni nanoparticles embedded in various organic semiconductor matrices”, B. Bräuer, Y. Vaynzof, W. Zhao, A. Kahn, W. Li, D. R. T. Zahn, C. J. Fernández, C. Sangregorio and G. Salvan,  J. Phys. Chem. B 113 4565 (2009).

 

2008

1) “Enhancement of electron injection into a light-emitting polymer from an aluminum oxide cathode modified by a self-assembled monolayer”, Y. Vaynzof, J. T. Dennes, J. Schwartz and A. Kahn, Appl. Phys. Lett. 93, 103305 (2008).