Perovskite-germanium heterostructure with periodical nanoparticles for broadband light harvesting

Yangxi Chen; Chaoling Du; Jing Wang; Xiaohui Zou

doi:10.1117/12.2687498

7 December 2023 Perovskite-germanium heterostructure with periodical nanoparticles for broadband light harvesting

Yangxi Chen, Chaoling Du, Jing Wang, Xiaohui Zou

Proceedings Volume 12763, Photonics for Energy III; 127630R (2023) https://doi.org/10.1117/12.2687498
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Abstract

The optical properties of the methylammonium lead iodide (CH₃NH₃PbI₃) - Germanium (Ge) heterojunction with a layer of periodical nanoparticles was investigated to achieve broadband light harvesting by 3D Finite Element Method (FEM). The constructed heterojunction device showed a broad bandwidth from 300nm to 1600nm. Under the AM(1.5) illumination, the maximal energy absorbed by the heterojunction device was 776.64W/m² after optimizing thickness of perovskite and Ge, as well as radius of metallic or dielectric nanospheres (Au, Ag, Al, Si₃N₄, TiO₂, Ta₂O₅). The improved optical performance was further demonstrated by comparing calculated electric fields and charge carrier generation rates of the optimized heterojunction with periodical nanoparticles layer with that of corresponding flat device.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yangxi Chen, Chaoling Du, Jing Wang, and Xiaohui Zou "Perovskite-germanium heterostructure with periodical nanoparticles for broadband light harvesting", Proc. SPIE 12763, Photonics for Energy III, 127630R (7 December 2023); https://doi.org/10.1117/12.2687498

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KEYWORDS

Heterojunctions

Germanium

Perovskite

Titanium dioxide

Finite element methods

Light absorption

Metals

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