Improving Light Absorption in a Perovskite/Si Tandem Solar Cell via Light Scattering and UV-Down Shifting by a Mixture of SiO_2 Nanoparticles and Phosphors

Seongha Lee; Chan Ul Kim; Sumin BaeYulin LiuYoung Im NohZiyu ZhouPaul W LeuKyoung Jin ChoiJung-Kun Lee

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Improving Light Absorption in a Perovskite/Si Tandem Solar Cell via Light Scattering and UV-Down Shifting by a Mixture of SiO_2 Nanoparticles and Phosphors

机译：Improving Light Absorption in a Perovskite/Si Tandem Solar Cell via Light Scattering and UV-Down Shifting by a Mixture of SiO_2 Nanoparticles and Phosphors

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The optical properties of a textured antireflective coating (ARC) polymeric filmare engineered by combining the down-conversion effect of large phosphorparticles and the multiple scattering effect of SiO_2 nanoparticles. In orderto address the parasitic absorption of ultraviolet (UV) light, phosphors areadded to convert UV light to visible light. However, the embedded phosphorsincrease the reflectance of the ARC film, due to the large particle size (>5 μm)and high refractive index (n ≈ 1.9) of phosphors. Such a backward scatteringproblem of phosphors is compensated by adding spherical SiO_2 nanoparticles.Experimental and computational results show that SiO_2 nanoparticles inthe ARC film decrease the reflectance by increasing the diffuse transmittance.This optically engineered ARC film successfully promotes the light absorptionof the perovskite/silicon tandem solar cell, leading to the improvement ofpower conversion efficiency of the tandem cell from 22.48% to 23.50%.

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来源
《Advanced functional materials》 |2022年第35期|2204328.1-2204328.9|共9页
作者
Seongha Lee; Chan Ul Kim; Sumin BaeYulin LiuYoung Im NohZiyu ZhouPaul W LeuKyoung Jin ChoiJung-Kun Lee;
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Department of Industrial EngineeringUniversity of PittsburghPittsburgh, PA 15261, USA;

Department of Material Science and EngineeringUlsan National Institute of Science and Technology (UNIST)Ulsan 44919, Republic of Korea;

Department of Mechanical Engineering and Material ScienceUniversity of PittsburghPittsburgh, PA 15261, USA;

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正文语种英语
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antireflective coatings; phosphors; scattering; SiO_2 particles; tandem solar cells; UV down conversion;

Improving Light Absorption in a Perovskite/Si Tandem Solar Cell via Light Scattering and UV-Down Shifting by a Mixture of SiO_2 Nanoparticles and Phosphors

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