Comparative performance of single and binary metal selenides in dye-sensitized solar cells
Iron selenide (FeSe2), cobalt selenide (Co3Se4), and iron cobalt selenide (FeCo2Se4) have been synthesized via a two-step hydrothermal process. The formation of FeSe2, Co3Se4, and FeCo2Se4 has been proven by sample characterization to support their catalytic activity as the counter electrodes for dy...
| Published in: | JOURNAL OF SOLID STATE ELECTROCHEMISTRY |
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| Main Authors: | , , , , , , |
| Format: | Article; Early Access |
| Language: | English |
| Published: |
SPRINGER
2024
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| Subjects: | |
| Online Access: | https://www-webofscience-com.uitm.idm.oclc.org/wos/woscc/full-record/WOS:001161691000001 |
| Summary: | Iron selenide (FeSe2), cobalt selenide (Co3Se4), and iron cobalt selenide (FeCo2Se4) have been synthesized via a two-step hydrothermal process. The formation of FeSe2, Co3Se4, and FeCo2Se4 has been proven by sample characterization to support their catalytic activity as the counter electrodes for dye-sensitized solar cells (DSSCs). The poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP)/propylene carbonate (PC)/1,2-dimethoxyethane (DME)/1-methyl-3-propyl imidazolium iodide (MPII)/sodium iodide (NaI)/iodine (I-2) gel electrolytes were assembled into DSSCs with FeCo2Se4, FeSe2, Co3Se4, or platinum (Pt) as the counter electrode. The DSSC with FeCo2Se4 counter electrode shows an efficiency of 8.55%, whereas Pt counter electrode shows an efficiency of 7.06%. The highest performance of DSSC achieved with FeCo2Se4 can be attributed to its highest surface area and pore volume. Hence, FeCo2Se4 can be used as a Pt-free counter electrode for high-performance DSSCs. |
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| ISSN: | 1432-8488 1433-0768 |
| DOI: | 10.1007/s10008-024-05835-4 |