Journal
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS
Volume 40, Issue 1, Pages 59-63Publisher
JAPAN SOC APPLIED PHYSICS
DOI: 10.1143/JJAP.40.59
Keywords
CuGaSe2 crystals; electron paramagnetic resonance (EPR); photoluminescence (PL); selenium vacancy (V-Se(+)); complex defects
Categories
Ask authors/readers for more resources
Electron paramagnetic resonance (EPR) at T = 4.2 K and photoluminescence (PL) spectra at T = 20 K have been employed to elucidate point defect features in CuGaSe2 crystals grown by the traveling heater method. Isotropic and anisotropic paramagnetic centers have been found in crystals as-grown and annealed in various gas mediums. Three PL bands have been observed and the influence of H-2, O-2 and Se-2 annealing has been studied. The presence of donor singlet V-se(+) has been evidenced in as-grown and H-2 annealed crystals. Complex study of EPR, PL spectra and defect physics models have allowed the addition of the point defect ensemble in CuGaSe2 with defect pairs (2V(cu)(-) + Ga-cu(2+)). V-cu and other defect complexes, according to treatments used in this work.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available