Journal
ADVANCED ENERGY AND SUSTAINABILITY RESEARCH
Volume 2, Issue 10, Pages -Publisher
WILEY
DOI: 10.1002/aesr.202100056
Keywords
counter electrodes; dye-sensitized solar cells; metal chalcogenides; metal selenides; metal sulfides; metal tellurides
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Funding
- National Natural Science Foundation of China [51972255, 51502224]
- Scientific Leadership Training Program of Hubei Province
- Students Innovation and Entrepreneurship Training Program [20171049701024]
- Chinese Scholarship Council (CSC) [2016GF147]
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Fundamental Research Funds for the Central Universities [GK202102001]
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The development and application of metal chalcogenides as counter electrodes (CEs) in dye-sensitized solar cells (DSSCs) have received significant attention due to their low cost and unique electrocatalytic performance. However, further research is needed to explore the mechanism and practical application of these materials. Additionally, efforts to improve power conversion efficiencies (PCEs) in DSSCs utilizing metal chalcogenides as CEs are crucial for the advancement of this technology.
The dye-sensitized solar cell (DSSC), a third-generation photovoltaic technology, has gained considerable attention since the achievement of around 7% efficiency in 1991. To reduce the cost of the commonly used platinum (Pt) counter electrode (CE), different materials with good electrocatalytic activities have been applied as CEs for DSSCs. Recently, transition metal chalcogenides, such as metal sulfides, metal selenides, and metal tellurides, have been investigated because of their low cost, unique electrocatalytic performance, and electronic structure similar to Pt. However, more efforts remain to be made on the mechanism and application of these metal chalcogenides as CEs for DSSCs. Herein, an overview and guidelines are given on recent advances in binary and multinary metal chalcogenides used as CEs in DSSCs. The synthesis techniques and the effect of morphology optimization and stoichiometric ratios are briefly described. The development of composites made of metal chalcogenides combined with highly electrocatalytic materials, especially carbon-based materials, is also briefly discussed. Some suggestions and methods to improve the power conversion efficiencies (PCEs) of DSSCs designed with metal chalcogenides as CEs are also provided.
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