Recombination kinetics of photogenerated carriers in polymeric crystals with disorders (traps) was investigated. The distribution function and the survival probablility Ω n (τ) for a correlated pair of quasi-particles diffusing in a segment with absorbing ends are calculated. It is shown that the decay of Ω n (τ) follows the exponential dependence α exp (−τ), τ ≡ 5π 2 Wt/n 2 ⋙ 1 ( W is the diffusion rate, n is the segment length), unlike the power-law dependence ∞ (Wt/n) − 1 2 for an infinite ideal chain. Within the framework of a model of molecular chain with random traps the averaged survival probability for a pair of photogenerated charge carriers in a quasi-one-dimensional polymer crystal <Ω n (τ)> (which is shown to describe the transient photocurrent at low bias field) is calculated.