The role of the density of interface states in interfacial energy level alignment of PTCDA

Gao, 2010, Surface analytical studies of interfaces in organic semiconductor devices, Mater. Sci. Eng. R., 68, 39, 10.1016/j.mser.2010.01.001 Gelinck, 2010, Organic transistors in optical displays and microelectronic applications, Adv. Mater., 22, 3778, 10.1002/adma.200903559 Guo, 2010, Functional organic field-effect transistors, Adv. Mater., 22, 4427, 10.1002/adma.201000740 Di, 2013, Multi-functional integration of organic field-effect transistors (OFETs): advances and perspectives, Adv. Mater., 25, 313, 10.1002/adma.201201502 Chen, 2010, Recent developments in top-emitting organic light-emitting diodes, Adv. Mater., 22, 5227, 10.1002/adma.201001167 Reineke, 2013, White organic light-emitting diodes: status and perspective, Rev. Mod. Phys., 85, 1245, 10.1103/RevModPhys.85.1245 Jou, 2015, Approaches for fabricating high efficiency organic light emitting diodes, J. Mater. Chem. C, 3, 3500, 10.1039/C5TC90053K Hains, 2010, Molecular semiconductors in organic photovoltaic cells, Chem. Rev., 110, 6689, 10.1021/cr9002984 Weickert, 2011, Nanostructured organic and hybrid solar cells, Adv. Mater., 23, 1810, 10.1002/adma.201003991 Kumar, 2012, Recent progress and future aspects of organic solar cells, Prog. Photovolt., 20, 377, 10.1002/pip.1141 Ameri, 2013, Organic ternary solar cells: a review, Adv. Mater., 25, 4245, 10.1002/adma.201300623 Krause, 2004, Temperature dependence of the 2D-3D transition in the growth of PTCDA on Ag(111): a real-time X-ray and kinetic monte carlo study, Europhys. Lett., 65, 372, 10.1209/epl/i2003-10090-6 Vazquez, 2004, Dipole formation at metal/PTCDA interfaces: role of the charge neutrality level, Europhys. Lett., 65, 802, 10.1209/epl/i2003-10131-2 Zou, 2006, Chemical bonding of PTCDA on Ag surfaces and the formation of interface states, Surf. Sci., 600, 1240, 10.1016/j.susc.2005.12.050 Duhm, 2008, PTCDA on Au(111), Ag(111) and Cu(111): correlation of interface charge transfer to bonding distance, Org. Electron., 9, 111, 10.1016/j.orgel.2007.10.004 Romaner, 2009, Theoretical study of PTCDA adsorbed on the coinage metal surfaces, Ag(111), Au(111) and Cu(111), New J. Phys., 11, 053010, 10.1088/1367-2630/11/5/053010 Zhong, 2012, The role of gap states in the energy level alignment at the organic-organic heterojunction interfaces, Phys. Chem. Chem. Phys., 14, 14127, 10.1039/c2cp41107e Kahn, 2003, Electronic structure and electrical properties of interfaces between metals and π-conjugated molecular films, J. Polym. Sci. Polym. Phys., 41, 2529, 10.1002/polb.10642 Hill, 1998, Molecular level alignment at organic semiconductor-metal interfaces, Appl. Phys. Lett., 73, 662, 10.1063/1.121940 Braun, 2007, Influence of the electrode work function on the energy level alignment at organic-organic interfaces, Appl. Phys. Lett., 91, 202108, 10.1063/1.2806938 Ishii, 1999, Energy level alignment and interfacial electronic structures at organic/metal and organic/organic interfaces, Adv. Mater., 11, 605, 10.1002/(SICI)1521-4095(199906)11:8<605::AID-ADMA605>3.0.CO;2-Q Knupfer, 2004, Electronic properties of interfaces between model organic semiconductors and metals, Phys. Status Solidi A, 201, 1055, 10.1002/pssa.200304332 Peisert, 2008, Charge transfer and polarization screening at organic/metal interfaces: distinguishing between the first layer and thin films, J. Phys. Chem. C, 112, 5703, 10.1021/jp800674z Peisert, 2009, Site-specific charge-transfer screening at organic/metal interfaces, J. Phys. Chem. C, 113, 19244, 10.1021/jp9057548 Verlaak, 2009, Electronic structure and geminate pair energetics at organic-organic interfaces: the case of Pentacene/C-60 heterojunctions, Adv. Funct. Mater., 19, 3809, 10.1002/adfm.200901233 Braun, 2009, Energy-level alignment at organic/metal and organic/organic interfaces, Adv. Mater., 21, 1450, 10.1002/adma.200802893 Braun, 2010, Fermi level equilibrium at donor-acceptor interfaces in multi-layered thin film stack of TTF and TCNQ, Org. Electron, 11, 212, 10.1016/j.orgel.2009.10.018 Bao, 2014, Trap-assisted recombination via integer charge transfer states in organic bulk heterojunction photovoltaics, Adv. Funct. Mater., 24, 6309, 10.1002/adfm.201401513 Akaike, 2014, Fermi level pinning induced electrostatic fields and band bending at organic heterojunctions, Appl. Phys. Lett., 105, 223303, 10.1063/1.4903360 Oehzelt, 2014, Organic semiconductor density of states controls the energy level alignment at electrode interfaces, Nat. Commun., 5, 4174, 10.1038/ncomms5174 Akaike, 2015, The impact of disorder on the energy level alignment at molecular donor–acceptor interfaces, Adv. Mater. Inter., 2, 1500232, 10.1002/admi.201500232 Mao, 2011, Mechanism of the Fermi level pinning at organic donor-acceptor heterojunction interfaces, Org. Electron, 12, 534, 10.1016/j.orgel.2011.01.003 Paasch, 2003, Mixing of interface dipole and band bending at organic/metal interfaces in the case of exponentially distributed transport states, J. Appl. Phys., 93, 6084, 10.1063/1.1562731 Vazquez, 2007, Energy level alignment at metal/organic semiconductor interfaces: "Pillow" effect, induced density of interface states, and charge neutrality level, J. Chem. Phys., 126, 144703, 10.1063/1.2717165 Vazquez, 2007, Induced density of states model for weakly-interacting organic semiconductor interfaces, Org. Electron, 8, 241, 10.1016/j.orgel.2006.07.006 Flores, 2009, Modelling energy level alignment at organic interfaces and density functional theory, Phys. Chem. Chem. Phys., 11, 8658, 10.1039/b902492c Hill, 2000, Organic semiconductor interfaces: electronic structure and transport properties, Appl. Surf. Sci., 166, 354, 10.1016/S0169-4332(00)00449-9 Peisert, 2002, Energy level alignment at organic/metal interfaces: dipole and ionization potential, Appl. Phys. Lett., 81, 2400, 10.1063/1.1509472 Koch, 2006, Electrode-molecular semiconductor contacts: work-function-dependent hole injection barriers versus fermi-level pinning, Appl. Phys. Lett., 89, 162107, 10.1063/1.2364166 Salomon, 2008, Photoemission studies of interfaces between a tris(thieno)hexaazatriphenylene derivative and metals, Org. Electron., 9, 944, 10.1016/j.orgel.2008.06.015 Hwang, 2009, Energetics of metal-organic interfaces: new experiments and assessment of the field, Mat. Sci. Eng. R., 64, 1, 10.1016/j.mser.2008.12.001 Bussolotti, 2013, Gap states in pentacene thin film induced by inert gas exposure, Phys. Rev. Lett., 110, 267602, 10.1103/PhysRevLett.110.267602 Vazquez, 2004, Barrier formation at metal-organic interfaces: dipole formation and the charge neutrality level, Appl. Surf. Sci., 234, 107, 10.1016/j.apsusc.2004.05.084