Premium
On the Interaction of Electrons and Holes in a Molecular Crystal
Author(s) -
Jurgis A.,
Silinsh E. A.
Publication year - 1972
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220530234
Subject(s) - anthracene , electron , naphthalene , atomic physics , chemistry , polarization (electrochemistry) , charge carrier , molecular physics , materials science , condensed matter physics , physics , photochemistry , organic chemistry , quantum mechanics
A self‐consistent polarization field (SCPF) method is used in the framework of a classical electrostatic model to compute single charge carrier polarization energies and electron‐hole interaction energies in naphthalene and anthracene crystals. The crystal polarization energy P e‐h of an electron‐hole pair localized on specific sites and the energy of the respective charge transfer (CT) states E CT have been calculated for nearest‐neighbour states in naphthalene and five specific sites in anthracene. The estimated polarization energy of a single charge carrier is 1.27 eV for naphthalene, 0.07 eV below the mean reported experimental value, and 1.52 eV for anthracene, 0.06 eV below the mean experimental value. The energy of the nearest‐neighbour CT state is estimated to be 4.29 eV for naphthalene, 0.09 eV below the reported experimental value, and 3.19 eV for anthracene, 0.26 eV below the reported experimental value. The energy of the first conductivity level for electrons E' C is estimated to be 3.96 eV for anthracene, 0.06 eV above the reported threshold for intrinsic photoconductivity. The validity and perspectives of the SCPF method are discussed.