Memorias de investigación
Research Publications in journals:
Refractive indexes and extinction coefficients of n- and p-type doped GainP and AlGaInP for Multijunction Solar Cells
Year:2017

Research Areas
  • Solar cells

Information
Abstract
The optical properties of p-type, n-type and nominally undoped (AlxGa1?x)yIn1?yP layers have been determined in a wide spectral range. The layers under study have been chosen with compositions and dopant concentrations which make them interesting for their use in III-V multijunction solar cells. The layers have been measured by variable angle spectroscopic ellipsometry and, irrespective of composition and doping, their optical response has been modelled using the same model dielectric function consisting of two asymmetric Tauc-Lorentz oscillators and a 3D-M0 Adachi term. The results show that transition energy values change with layer composition, whilst for layers of the same material (i.e. GaInP or AlInP), the band-gap transition energy E0 shows a strong dependence on the order parameter. The refractive indexes and extinction coefficients deduced from the ellipsometric data have been used to fit reflectance measurements for the same layers and an excellent agreement has been achieved, thus validating the model dielectric function proposed for this kind of materials.
International
Si
JCR
Si
Title
Solar Energy Materials And Solar Cells
ISBN
0927-0248
Impact factor JCR
4,732
Impact info
Datos JCR del año 2015
Volume
174
Journal number
From page
388
To page
396
Month
SIN MES
Ranking
Participants

Research Group, Departaments and Institutes related
  • Creador: Departamento: Electrónica Física, Ingeniería Eléctrica y Física Aplicada