Abstract
Interaction of holes with excitons has been investigated in tetracene crystals at room temperature. It is found that the annihilation of triplet excitons by trapped holes is characterised by a rate constant KT = (1.5 ± 0.5) × 10−10 cm3 s−l. For the rate constant for singlet exciton‐hole annihilation an upper limit of Ks ≤ 1 × 10−7 cm3 s−l is estimated.