Infrared absorption spectra for self-assembled monolayer of p-nitrothiophenol on Pulsed Laser Deposited (PLD) silver films have been measured at normal incidence of radiation. For a PLD film grown in non-equilibrium conditions, it was confirmed that the particle diameter and the interparticle distance were small compared with those of a vacuum-evaporated film. A film with such morphology is advantageous for infrared absorption enhancement. Results show that the best film for the infrared absorption enhancement is probably that generated with PLD. (C) 2013 Elsevier B.V. All rights reserved.