Broadband and omnidirectional anti-reflection coating for III/V multi-junction solar cells

S.L. Diedenhofen, G. Vecchi, G. Bauhuis, J.G. Rivas

Research output: Chapter in Book/Report/Conference proceedingChapterAcademicpeer-review

2 Citations (Scopus)


Graded refractive index layers reduce the reflection and increase the coupling of light into a substrate by optical impedance matching at the interfaces. Due to the optical impedance matching, reflections at the interfaces are not possible for a broad wavelength range, rendering this type of anti-reflection coating a promising candidate for III/V multi-junction solar cells. Graded refractive index layers can be modeled using a transfer-matrix method for isotropic layered media. We derive the transfer-matrix method and we show calculations of the reflection from and the transmission into an AlInP layer coated with different anti-reflection coatings. We describe a new type of anti-reflection coating based on tapered semiconductor nanowires and we show reflection and transmission measurements of those kind of anti-reflection coatings on top of different substrates.

Original languageEnglish
Title of host publicationHigh-Efficiency Solar Cells
Subtitle of host publicationPhysics, Materials, and Devices
EditorsX. Wang, Zh.M. Wang
Place of PublicationBerlin
Number of pages25
ISBN (Electronic)978-3-319-01988-8
ISBN (Print)978-3-319-01987-1
Publication statusPublished - 2014

Publication series

NameSpringer Series in Materials Science
ISSN (Print)0933-033X


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