Experimental and theoretical insights into enhanced light harvesting in dye-sensitized solar cells via Au@TiO2 core-shell and BaTiO3 nanoparticles

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2024-09-24 DOI:10.1016/j.jtice.2024.105778

Vijayakumar Paranthaman , K.S. Shalini Devi , K.B. Bhojanaa , V. Aravindan , Gurusamy Raman , Raju Suresh Kumar , Camellia Doroody , Reji kumar Rajamony , Prajindra Sankar Krishnan

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引用次数: 0

Abstract

Background

Dye-sensitized solar cells (DSSCs) are an attractive choice among third-generation solar cells due to their affordability and eco-friendliness, making them a promising solution for sustainable energy production. Enhancing the light-capturing efficiency of photoanodes is crucial for improving the power conversion efficiency (PCE) of DSSCs.

Methods

In this study, we developed core-shell Au@TiO₂ (ATO) particles to enhance light harvesting and BaTiO₃ (BTO) nanoparticles to act as a scattering layer. These nanoparticles were incorporated into a photoanode, paired with a commercial N719 sensitizer, an iodide/triiodide redox liquid electrolyte, and a Pt cathode. The performance of the assembled DSSC was compared with traditional TiO₂ photoanodes, and further theoretical analysis was conducted using the solar cell capacitance simulator (SCAPS-1D) to examine PCE variations with ATO layer thickness (2–20 μm).

Significant findings

The DSSC with an ATO/BTO-based photoanode achieved a PCE of 8.76 %, significantly higher than the 6.72 % PCE of cells using bare TiO₂ photoanodes. This efficiency enhancement is attributed to improved light scattering, reduced charge recombination, and minimized core particle corrosion due to the perovskite oxide layer. Enhanced plasmonic effects also led to superior light absorption and improved charge carrier generation and separation.

Abstract Image

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通过 Au@TiO2 核壳和 BaTiO3 纳米粒子增强染料敏化太阳能电池采光的实验和理论见解

背景染料敏化太阳能电池（DSSC）是第三代太阳能电池中颇具吸引力的选择，因为其价格低廉、生态友好，使其成为可持续能源生产的一种有前途的解决方案。在这项研究中，我们开发了核壳 Au@TiO2 (ATO) 颗粒来增强光收集，并开发了 BaTiO3 (BTO) 纳米颗粒作为散射层。这些纳米粒子与商用 N719 增感剂、碘/三碘氧化还原液态电解质和铂阴极配对后被纳入光阳极。将组装好的 DSSC 的性能与传统的 TiO2 光阳极进行了比较，并使用太阳能电池电容模拟器（SCAPS-1D）进行了进一步的理论分析，以研究 PCE 随 ATO 层厚度（2-20 μm）的变化。效率的提高归功于光散射的改善、电荷重组的减少以及包晶体氧化物层对芯颗粒腐蚀的最小化。增强的等离子效应也带来了出色的光吸收效果，并改善了电荷载流子的产生和分离。

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

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.