Thick films of photoconducting CdS reveal superior photosensitivity of the
order of 10(8)-10(9) which is the highest reported so far for CdS photocond
uctors. In this article (a) general theory of photoconductivity is presente
d initially for the ready reference of the readers, (b) salient aspects of
the preparation of thick films of photoconducting CdS are mentioned, and (c
) photoconducting and allied properties of CdS thick films are reviewed. (C
) 1999 Elsevier Science S.A. All rights reserved.