Waterbased electrically conductive adhesive for PERC-type shingled solar cells

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells Pub Date : 2025-02-27 DOI:10.1016/j.solmat.2025.113525

Hüseyin Utkucan Kayacı , Gurcan Utku Ozdemir , Meryem Ezgi Karahalli , Ahmet Hamdi Aksoy , Serdar Guler , Doga Doganay , Sahin Coskun , Talat Ozden , Simge Çınar Aygün , Rasit Turan , Husnu Emrah Unalan

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引用次数: 0

Abstract

This study explores the development of innovative, environmentally friendly water-based electrically conductive adhesives (ECAs) designed specifically for interconnecting shingled passivated emitter rear cell (PERC) solar cells. Formulated with silver (Ag) microflakes and optimized polymeric additives, these adhesives aim to enhance electrical conductivity, adhesion strength, and reliability under real-world operating conditions of solar cells. By reducing reliance on conventional solvent-based adhesives, the water-based ECAs offer significant environmental benefits, including reduced volatile organic compound (VOC) emissions and improved handling safety, aligning with sustainable manufacturing practices. Through systematic experimental analysis and detailed characterization, the water-based adhesives demonstrated a yield stress of 4.8 MPa and a low volume resistivity of 22 μOhm-cm at a film thickness of 25 μm. A 0.4 % increase in power conversion efficiency is obtained compared to commercial counterparts. This efficiency improvement is attributed to the uniform dispersion and stabilization of Ag microflakes within the adhesive matrix, enabled by water-based dispersion techniques. These findings highlight the feasibility and effectiveness of water-based ECAs as a viable interconnection method, providing a balance of high conductivity and eco-friendliness. This research advances sustainable, cost-effective adhesive solutions in photovoltaic technology and beyond, aiding the industry's shift toward cleaner and more efficient solar cell production.

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来源期刊

Solar Energy Materials and Solar Cells 工程技术-材料科学：综合

CiteScore

12.60

自引率

11.60%

发文量

513

审稿时长

47 days

期刊介绍： Solar Energy Materials & Solar Cells is intended as a vehicle for the dissemination of research results on materials science and technology related to photovoltaic, photothermal and photoelectrochemical solar energy conversion. Materials science is taken in the broadest possible sense and encompasses physics, chemistry, optics, materials fabrication and analysis for all types of materials.