Crystal structure of CuInSe2 under high pressure

Abstract

The CulnSe2 has recently emerged as a very promising material for photovoltaic solar-energy application, due partially to the fact that it is probably the strongest absorbing semiconductor under sunlight. Furthermore, CuInSe2 is also widely used in optical laboratories. Since the chemical and physical properties of materials are governed by the temperature and pressure. The crystal structure of this material is studied under various thermodynamic conditions. Because of the advancement in technology, the structure studies of this material under high pressure are interested for various fields of work. In 1996, the crystal structure of CuInSe2 and their structural phase transitions under high pressure were investigated by T.Tinoco et al. They studied the crystal structure of CuInSe2 under the maximum pressure of 290 kbar by using energy dispersive x-rays diffraction with synchrotron radiation and Merill-Bassett diamond anvil cell. In this research, the Angle Dispersive X-rays Powder Diffraction is used with Image-Plate method and x-rays with =0.4654 A on station 9.1 at Synchrotron Radiation Source, Daresbury, UK for high quality data. DXR-6 Diamond anvil cell is used for generating pressure up to 532 kbar which the structural studies of this material at this pressure have never been done before. Ruby fluorescence technique is used for pressure calibration