Skip to Content
Merck
  • Optical coupling from InGaAs subcell to InGaP subcell in InGaP/InGaAs/Ge multi-junction solar cells.

Optical coupling from InGaAs subcell to InGaP subcell in InGaP/InGaAs/Ge multi-junction solar cells.

Optics express (2013-02-15)
G W Shu, J Y Lin, H T Jian, J L Shen, S C Wang, C L Chou, W C Chou, C H Wu, C H Chiu, H C Kuo
ABSTRACT

Spatially-resolved electroluminescence (EL) images in the triple-junction InGaP/InGaAs/Ge solar cell have been investigated to demonstrate the subcell coupling effect. Upon irradiating the infrared light with an energy below bandgap of the active layer in the top subcell, but above that in the middle subcell, the EL of the top subcell quenches. By analysis of EL intensity as a function of irradiation level, it is found that the coupled p-n junction structure and the photovoltaic effect are responsible for the observed EL quenching. With optical coupling and photoswitching effects in the multi-junction diode, a concept of infrared image sensors is proposed.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Gallium arsenide, (single crystal substrate), <100>, diam. × thickness 2 in. × 0.5 mm
Sigma-Aldrich
Indium, foil, thickness 0.25 mm, 99.995% trace metals basis
Sigma-Aldrich
Indium, beads, diam. 2-5 mm, 99.999% trace metals basis
Sigma-Aldrich
Indium, wire, diam. 1.0 mm, 99.99% trace metals basis
Sigma-Aldrich
Indium, wire, diam. 0.45-0.55 mm, 99.995% trace metals basis
Sigma-Aldrich
Indium, pieces, 99.99% trace metals basis
Sigma-Aldrich
Indium, beads, diam. 2-5 mm, ≥99.9% trace metals basis
Sigma-Aldrich
Indium, powder, 99.99% trace metals basis
Sigma-Aldrich
Indium, foil, thickness 0.127 mm, 99.99% trace metals basis
Sigma-Aldrich
Indium, wire, diam. 2.0 mm, 99.995% trace metals basis
Sigma-Aldrich
Indium, foil, thickness 1.0 mm, 99.999% trace metals basis
Sigma-Aldrich
Indium, foil, thickness 0.1 mm, ≥99.995% trace metals basis
Sigma-Aldrich
Indium, foil, thickness 0.25 mm, 99.99% trace metals basis
Sigma-Aldrich
Indium, powder, −100 mesh, 99.99% trace metals basis
Sigma-Aldrich
Indium, rod, diam. 6 mm, ≥99.999% trace metals basis
Sigma-Aldrich
Indium, bars, 99.95%
Sigma-Aldrich
Indium, foil, thickness 0.5 mm, 99.99% trace metals basis
Sigma-Aldrich
Indium, wire, diam. 1.0 mm, 99.995% trace metals basis