BAND-GAP CALCULATION OF THE HYDROGENATED AMORPHOUS-GERMANIUM TIN ALLOYS

Authors
AVENDANOLOPEZ J CASTILLOALVARADO FL BARRIO RA
Citation
J. Avendanolopez et al., BAND-GAP CALCULATION OF THE HYDROGENATED AMORPHOUS-GERMANIUM TIN ALLOYS, Revista Mexicana de Fisica, 40(5), 1994, pp. 750-760
Citations number
12
Categorie Soggetti
Physics
Journal title
Revista Mexicana de Fisica → ACNP
ISSN journal
0035001X
Volume
40
Issue
5
Year of publication
1994
Pages
750 - 760
Database
ISI
SICI code
0035-001X(1994)40:5<750:BCOTHA>2.0.ZU;2-E
Abstract
The energy gap in hydrogenated amorphous germanium tin alloys is studi ed as a function of hydrogen and tin concentration. The theory used fo r the calculations is based on the nested coherent potential approxima tion (NCPA), using a tight binding hamiltonian in the Bethe lattice. T he results are discussed in terms of experimental data from optical ab sorption, Mossbauer, dark conductivity and infrared measurements.