Pyroelectric behaviour of Langmuir-Blodgett films containing polar chromophores

The pyroelectric behaviour of Langmuir-Blodgett films containing several different polar chromophores was studied. Two distinct levels of activity are seen. By comparison with films containing no chromophores it is shown that the lower level of activity is likely to be due to a thermal expansion effect. A possible explanation for the higher level of activity is also suggested. © 1987