Gas pressure cell for electroluminescence and photoconductivity measurements

High-pressure studies of electroluminescence and photoconductivity are comm only carried out using liquid pressure systems. The wider application of a gas pressure system (with its substantial advantages) in this kind of studi es is limited by the difficulties in the construction of a suitable sample cell. Such a cell, in addition to electric and optical access, must be prov ided with a high-pressure inlet, and the overall dimension of the cell shou ld allow it to fit most standard cryostats. In this paper a high gas pressu re optical cell is described which enables electroluminescence or photocond uctivity measurements at pressures up to 1.0 GPa and at temperatures down t o 1K.