Dielectric nanopillar array anti-reflectors for GaSb thermophotovoltaic cells

IF 3.4 3区物理与天体物理 Q2 INSTRUMENTS & INSTRUMENTATION Infrared Physics & Technology Pub Date : 2025-03-01 Epub Date: 2024-12-10 DOI:10.1016/j.infrared.2024.105654

Siyuan Liu , Xincun Peng , Jijun Zou , Wenjuan Deng , Liangliang Tang , Lei Huang , Qi Chen , Linlin Jiang , Chaoyan Zhong , Yu Wang

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Abstract

Dielectric Si₃N₄ nanopillar arrays (NPA) fabricated by the low-cost nanosphere lithography method are employed as the anti-reflectors for the GaSb thermophotovoltaic (TPV) cells, which show the excellent light management performance. For the broad GaSb intrinsic absorption waveband of 800–1700 nm, the ultra-low flux-spectrum-weighted reflection of 2.68 % is obtained by the NPA. A tungsten thermal radiator with the temperature of 1200 °C is used and the light source to test the photoelectric conversion performances of the TPV cells. Compared to the normal Si₃N₄ film anti-reflective coating GaSb TPV cells, the 1.93-fold increase in short-circuit current density, the 1.1-fold increase in open-circuit voltage. The conversion efficiency is increased from 14.31 % to 25.19 %. Given these properties, dielectric NPA represent a promising anti-reflector to provide the TPV cells with high energy conversion efficiency.

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GaSb热光伏电池用介电纳米柱阵列防反射器

采用低成本纳米球光刻方法制备的介电Si3N4纳米柱阵列（NPA）作为GaSb热光伏（TPV）电池的抗反射材料，具有良好的光管理性能。在800 ~ 1700 nm宽的GaSb本征吸收波段，NPA获得了2.68%的超低通量谱加权反射率。采用温度为1200℃的钨热散热器和光源对TPV电池的光电转换性能进行测试。与普通的Si3N4膜增透镀膜GaSb TPV电池相比，短路电流密度提高1.93倍，开路电压提高1.1倍。转换效率由14.31%提高到25.19%。鉴于这些特性，介电NPA是一种很有前途的抗反射材料，可以为TPV电池提供高能量转换效率。

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来源期刊

Infrared Physics & Technology 物理-光学

CiteScore

5.70

自引率

12.10%

发文量

400

审稿时长

67 days

期刊介绍： The Journal covers the entire field of infrared physics and technology: theory, experiment, application, devices and instrumentation. Infrared'' is defined as covering the near, mid and far infrared (terahertz) regions from 0.75um (750nm) to 1mm (300GHz.) Submissions in the 300GHz to 100GHz region may be accepted at the editors discretion if their content is relevant to shorter wavelengths. Submissions must be primarily concerned with and directly relevant to this spectral region. Its core topics can be summarized as the generation, propagation and detection, of infrared radiation; the associated optics, materials and devices; and its use in all fields of science, industry, engineering and medicine. Infrared techniques occur in many different fields, notably spectroscopy and interferometry; material characterization and processing; atmospheric physics, astronomy and space research. Scientific aspects include lasers, quantum optics, quantum electronics, image processing and semiconductor physics. Some important applications are medical diagnostics and treatment, industrial inspection and environmental monitoring.