A novel sodium alginate polysulfide gel electrolyte prepared by grinding method for highly efficient and stable quasi-solid-state quantum dot sensitized solar cells

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces Pub Date : 2025-02-02 DOI:10.1016/j.surfin.2025.105967

Senyang Wang , Yingdi Zhou , Bo Huang , Jingyi Qi , Mengting Hua , Xiaoshi Jin , Ling Li

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Abstract

The practical progression of quantum-dot sensitized solar cells (QDSSCs) due to the poor stability, which directly related to the leakage and volatileness of liquid electrolyte. Herein, the sodium alginate (SA) polysulfide gel electrolyte prepared by grinding method was first applied in the quasi-solid state QDSSCs. It has a pore structure which can elevate the rapid diffusion of ions. And the cross-linked interface with photoanode is smooth and non-adherent. The SA polysulfide gel electrolyte was used in Zn-Cu-In-Se (ZCISe) QDSSCs for standard experiments. The QDSSCs are able to materialize the photoelectric conversion efficiency (PCE) of 8.85% (V_oc is 0.63 V, J_sc is 26.16 mA·cm⁻², FF is 51.80), which is 6% higher than the liquid polysulfide QDSSCs (8.34%). Above all, the stability is 3.2 times higher than that of liquid polysulfide electrolyte. The research fulfilled the goal of both efficiency and stability, also environmentally friendly.

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来源期刊

Surfaces and Interfaces Chemistry-General Chemistry

CiteScore

8.50

自引率

6.50%

发文量

753

审稿时长

35 days

期刊介绍： The aim of the journal is to provide a respectful outlet for ''sound science'' papers in all research areas on surfaces and interfaces. We define sound science papers as papers that describe new and well-executed research, but that do not necessarily provide brand new insights or are merely a description of research results. Surfaces and Interfaces publishes research papers in all fields of surface science which may not always find the right home on first submission to our Elsevier sister journals (Applied Surface, Surface and Coatings Technology, Thin Solid Films)