A comprehensive review on deposition techniques and electrolytes in quantum dot sensitized solar cells: Insights into green chemistry considerations

Document Type

Review

Publication Date

2-1-2026

Abstract

Quantum Dot Sensitized Solar Cells (QDSSCs) are a promising technology for next-generation solar energy harvesting. They offer tunable electronic properties and potentially higher efficiencies than traditional photovoltaic systems. This review presents a comprehensive analysis of deposition techniques of quantum dots on the electron transport layer in QDSSCs and electrolyte advancements in the past decade that play a critical role in enhancing the performance of QDSSCs. Key deposition methods for quantum dots, including Successive Ionic Layer Adsorption and Deposition (SILAR), Chemical Bath Deposition (CBD), Linker-Assisted Techniques, and Electrophoretic Deposition (EPD), are discussed in detail. Each method is evaluated in terms of the photoconversion efficiency it results in, ease of fabrication, and ability to achieve uniform quantum dot deposition on photoanodes and long term stability. In addition to deposition techniques, the review explores the evolving landscape of electrolytes, which are vital to charge transport and stability in QDSSCs. The role of three types of electrolytes namely, liquid, quasi-solid-state, and solid-state electrolytes is critically examined, highlighting their impact on the overall performance and long-term stability of QDSSCs. Future research directions are proposed to overcome current limitations and pave the way for higher efficiency and commercial viability. Additionally, the review explores aspects of green chemistry in the context of deposition techniques and electrolyte advancements, highlighting sustainable approaches where applicable. The review concludes with insights on the potential of QDSSCs to transform the renewable energy sector through ongoing advancements in deposition techniques and electrolytes. This paper provides valuable insights for advancing the efficiency and durability of QDSSCs through innovations in deposition methods and electrolyte systems.

Publication Title

Inorganic Chemistry Communications

ISSN

13877003

DOI

10.1016/j.inoche.2025.115971

Volume

184

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