Work

Use of Cu/Ta2O5/Cu Fabry–Pérot cavities as large-area transparent electrodes for Si photovoltaic devices

Year: 2025

Type: article

Abstract: The authors propose a sputtered (Cu/Ta2O5/Cu)/Ta2O5 layered material for dual use as antireflective coating and as a large-area electrode for silicon photovoltaic devices. We experimentally demonstrate the transparency of this metallo-dielectric material in the UV-Vis band, which improves the amount of light collected even at large angles off-the-normal. Using numerical simulations, we subsequently discuss this transparency in terms of the overlap of the Fabry–Pérot resonances with the minimum of the absorption coefficient. Furthermore, we measured the photo-response of a (Cu/Ta2O5/Cu)/Ta2O5-coated Schottky diode using an AM1.5 spectrum supplied by a solar simulator. Measurements reveal that the structure acts as a large-area electrical electrode, which reduces the overall resistance of the Si/Cu interface and improves the collection of the photogenerated majority carriers.

Source: Journal of Applied Physics

DOI: 10.1063/5.0287420

Authors: Edgar Briones, Carlos Riolo, Joel Briones, Irving Cortes-Mestizo

Institutions: Instituto Tecnológico y de Estudios Superiores de Occidente, Centro de Investigaciones en Optica, Autonomous University of San Luis Potosí

Language: English

Topic: Optical Coatings and Gratings

Subfield: Surfaces, Coatings and Films

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,500

Funder: Sistema Nacional de Investigadores