High‐low refractive index stacks as antireflection coatings on triple‐junction solar cells

• DOI: 10.1002/pip.3608
• Publication Date: 2022-07-14T06:09:52Z
• Authors: Guo Jiao Hou; Elisa García‐Tabarés; Iván García; Ignacio Rey‐Stolle
• Keywords: Triple junction; Reflection; Quantum Efficiency

Abstract Antireflection coatings (ARCs) are crucial components of high‐efficiency solar cells. A new ARC design philosophy, dubbed high‐low refractive index stacks, has demonstrated good potential to minimize reflection losses for triple‐junction and quadruple‐junction cells in simulations. We have implemented such novel ARCs on GaInP/InGaAs/Ge compared the experimental performances—external quantum efficiency reflectivity—with that identical devices equipping classic double‐layer ARC. For typical materials as MgF 2 /ZnS with ambient glass, results show improves short circuit current by 1.8% at normal incidence 1.6% 1% angles 30° 50°, respectively.