Electron irradiation effects in CuInSe2 and CuInGaSe2 were investigated using electron spin resonance (ESR) method. ESR signal caused by electron irradiation was found in irradiated samples. The ESR spectra of irradiated samples were well reproduced by a computer simulation of powder spectrum assuming Cu2+ ion. Electron irradiation effects in CuInSe2 and CuInGaSe2 are discussed based on present ESR study together with previous deep level transient spectroscopy (DLTS) and Hall effect measurements.
Bibliographical noteFunding Information:
Thanks are due to the Research Center for Molecular-scale Nanoscience, the Institute for Molecular Science (IMS), for assistance in obtaining the ESR spectra. Authors would like to thank Dr. M. Sakai of IMS and Dr. N. Morishita of Japan Atomic Energy Research Institute for their valuable help and discussion on ESR measurement. This work was financially supported in part by 21st century COE program “Intelligent Human Sensing” from Ministry of Education, Science, Sports and Culture. This work was also supported in part by Japan Space Forum as a ‘Ground Research Announcement for Space Utilization’.
- Electron spin resonance
- High-energy electron irradiation
- Irradiation effects
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Renewable Energy, Sustainability and the Environment
- Surfaces, Coatings and Films