The incorporation of tricosanoic acid bilayers (TABs) at strategic points within the alternate-layer film has led to an enhancement of the pyroelectric response. The insertion of non-pyroelectric TABs is believed to screen one block of aligned material from another allowing the alignment of polysiloxane and eicosylamine to be maintained throughout the structure. The effect on the pyroelectricity of changing the number of TABs added into alternate-layer films containing 13 monolayers (7 polysiloxane/6 eicosylamine) has been investigated over a range of temperatures. The quasi-static pyroelectric coefficient is optimised when 3 TABs are incorporated into the alternate-layer assembly. At room temperature (25 degrees C) the effective pyroelectric activity is doubled due to the inclusion of the non-active TABs.