The influence of the exciton non-radiative recombination in silicon on the photoconversion efficiency. 1. The case of a long Shockley–Read–Hall lifetime - A. V. Sachenko; V. P. Kostylyov; V. M. Vlasiuk; I. O. Sokolovskyi; M. Evstigneev (Semiconductor Physics, Quantum Electronics and Optoelectronics, 2016)