Nickel-polyimide-nickel based ultra-wideband octagonal solar absorber as a thermal emitter

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-05-10 DOI:10.1016/j.materresbull.2025.113545

Vikram Maurya, Sarthak Singhal

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引用次数: 0

Abstract

This paper presents a highly efficient ultrathin compact nickel-polyimide-nickel (Ni-Pi-Ni) based thermal emitter using an ultrawideband circular slot loaded corner notched octagonal solar absorber operating from infrared to ultraviolet (UV) spectrum. The total volume of the absorber is 90 × 90 × 11 nm³. Absorption (A)≥90 % is achieved across 133.4347–4252.739 THz (70.543–2248.29 nm) with an average of 98.37 %. The proposed symmetric structure is polarization insensitive and has A≥90 % for incident angles up to θ≤50° and ≥80 % for incident angles up to θ≤60°. It covers some parts of the infrared region and the complete visible and ultraviolet range, making it suitable for a wide range of solar applications. As a solar absorber, its solar absorption efficiency (η_A) is 98.4 %, and thermal emission efficiency (η_E) is 85.49 %, 89.79 %, 93.19 %, 95.46 %, 96.89 %, 97.8 %, 98.37 % at 500 K, 1000 K, 1500 K, 2000 K, 2500 K, 3000 K & 3500 K respectively. Maximum 69.19 % Solar to Electrical Conversion Efficiency (

η_{sol - electrical}

) is achieved using the proposed solar absorber.

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镍-聚酰亚胺-镍基超宽带八角形太阳能吸收体作为热发射器

本文提出了一种高效的超薄紧凑镍-聚酰亚胺-镍（Ni-Pi-Ni）基热发射器，该热发射器采用超宽带圆形槽加载角缺口八角形太阳能吸收体，工作于红外到紫外（UV）光谱。吸收器的总体积为90 × 90 × 11 nm3。在133.4347 ~ 4252.739 THz （70.543 ~ 2248.29 nm）范围内的吸光度(A)≥90%，平均为98.37%。该对称结构对偏振不敏感，在θ≤50°入射角下A≥90%，在θ≤60°入射角下A≥80%。它覆盖了部分红外区域和完整的可见光和紫外线范围，使其适用于广泛的太阳能应用。作为太阳能吸收体，其500k、1000k、1500k、2000k、2500k、3000k &的太阳能吸收效率（ηA）为98.4%，热辐射效率（ηE）为85.49%、89.79%、93.19%、95.46%、96.89%、97.8%、98.37%；分别为3500k。利用所提出的太阳能吸收器，最大太阳能到电的转换效率（ηsol -电）达到了69.19%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.