Band dispersion and electronic lifetimes in crystalline organic semiconductors

Abstract

The consequences of several microscopic interactions on the photoemission spectra of crystalline organic semiconductors (OSC) are studied theoretically. It is argued that their relative roles can be disentangled by analyzing both their temperature and their momentum/energy dependence. Our analysis shows that the polaronic thermal band narrowing, that is the foundation of most theories of electrical transport in OSC, is inconsistent in the range of microscopic parameters appropriate for these materials. An alternative scenario is proposed to explain the experimental trends.

4+ pages, revised conclusions; accepted for publication in Phys. Rev. Lett

References in corpus (8)

• The trap DOS in small molecule organic semiconductors: A quantitative comparison of thin-film transistors with single crystals
• Band-like motion and mobility saturation in organic molecular semiconductors
• Transient localization in crystalline organic semiconductors
• The Green's Function of the Holstein Polaron
• Electron-phonon coupling in crystalline Pentacene films
• Large Negative Thermal Expansion in Pentacene due to Steric Hindrance
• HOMO band structure and anisotropic effective hole mass in thin crystalline Pentacene films
• Holstein polaron in the presence of disorder

Cited by in corpus (27)

• The transient localization scenario for charge transport in crystalline organic materials
• A General Charge Transport Picture for Organic Semiconductors with Nonlocal Electron-Phonon Couplings
• Electronic transport and quantum localization effects in organic semiconductors
• Thermal Narrowing of the Electronic Bandwidths in Organic Molecular Semiconductors: Impact of the Crystal Thermal Expansion
• Molecular fingerprints in the electronic properties of crystalline organic semiconductors: from experiment to theory
• Vibrational spectrum and electron-phonon coupling of doped solid picene from first principles
• A unification of the Holstein polaron and dynamic disorder pictures of charge transport in organic semiconductors
• Investigating polaron transitions with polar molecules
• Symmetry Effects on Nonlocal Electron-Phonon Coupling in Organic Semiconductors
• Electron-phonon coupling in crystalline organic semiconductors: Microscopic evidence for nonpolaronic charge carriers
• Band gap renormalization, carrier mobilities, and the electron-phonon self-energy in crystalline naphthalene
• Transmon-based simulator of nonlocal electron-phonon coupling: A platform for observing sharp small-polaron transitions
• Trapping of three-dimensional Holstein polarons by various impurities
• Going beyond the linear approximation in describing electron- phonon coupling: relevance for the Holstein model
• Single polaron properties for double-well electron-phonon coupling
• Optical conductivity and optical effective mass in a high-mobility organic semiconductor: Implications for the nature of charge transport
• Quantum dynamics of the small-polaron formation in a superconducting analog simulator
• The effects of non-linear electron-phonon interactions on superconductivity and charge-density-wave correlations
• Effects of electron coupling to intra- and inter-molecular vibrational modes on the transport properties of single crystal organic semiconductors
• Strongly bound yet light bipolarons for double-well electron-phonon coupling
• Dynamical control of electron-phonon interactions with high-frequency light
• Decoherence and Energy Relaxation in the Quantum-Classical Dynamics for Charge Transport in Organic Semiconducting Crystals: an Instantaneous Decoherence Correction Approach
• Effects of different electron-phonon couplings on spectral and transport properties of small molecule single-crystal organic semiconductors
• Two-dimensional electronic transport in rubrene: the impact of inter-chain coupling
• Spectral features of polaronic excitations in a superconducting analog simulator
• Anderson localization versus charge-density-wave formation in disordered electron systems
• Surface doping of rubrene single crystals by molecular electron donors and acceptors