In Situ Biomineralization of CuxZnySnzS4 Nanocrystals within TiO2-Based Quantum Dot Sensitized Solar Cell Anodes
| Autor: | Li Lu, Abdolhamid Sadeghnejad, Mark Snyder, Joseph P. Cline, Christopher J. Kiely, Steven McIntosh, Nur Koncuy Ozdemir |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Anode law.invention chemistry.chemical_compound Nanocrystal Chemical engineering chemistry law Quantum dot Solar cell General Materials Science CZTS 0210 nano-technology Mesoporous material Biomineralization |
| Zdroj: | ACS Applied Materials & Interfaces. 11:45656-45664 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | CuZnSnS (CZTS) quantum dots (QDs) have potential application in quantum dot sensitized solar cells (QDSSCs); however, traditional synthesis approaches typically require elevated temperatures, expensive precursors, and organic solvents that can hinder large-scale application. Herein we develop and utilize an enzymatic, aqueous-phase, ambient temperature route to prepare CZTS nanocrystals with good compositional control. Nanoparticle synthesis occurs in a minimal buffered solution containing only the enzyme, metal chloride and acetate salts, and l-cysteine as a capping agent and sulfur source. Beyond isolated nanocrystal synthesis, we further demonstrate biomineralization of these particles within a preformed mesoporous TiO2 anode template where the formed nanocrystals bind to the TiO2 surface. This in situ biomineralization approach facilitates enhanced distribution of the nanocrystals in the anode and, through this, enhanced QDSSC performance. |
| Databáze: | OpenAIRE |
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