Molecular Monolayers for Electrical Passivation and Functionalization of Silicon-Based Solar Energy Devices
| Autor: | Janneke Veerbeek, Han Gardeniers, Nienke J. Firet, Rick Elbersen, Jurriaan Huskens, Wouter Vijselaar |
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| Přispěvatelé: | Molecular Nanofabrication, Mesoscale Chemical Systems |
| Rok vydání: | 2016 |
| Předmět: |
inorganic chemicals
Materials science Passivation Silicon Hydrosilylation chemistry.chemical_element Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences Organic monolayers chemistry.chemical_compound Silicon solar cells General Materials Science Silicon oxide business.industry Shunt resistance Dangling bond 021001 nanoscience & nanotechnology Solar energy Solar fuel 0104 chemical sciences chemistry 2023 OA procedure Optoelectronics Surface modification 0210 nano-technology business Electrical passivation |
| Zdroj: | ACS applied materials & interfaces, 9(1), 413-421. American Chemical Society |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | Silicon-based solar fuel devices require passivation for optimal performance yet at the same time need functionalization with (photo)catalysts for efficient solar fuel production. Here, we use molecular monolayers to enable electrical passivation and simultaneous functionalization of silicon-based solar cells. Organic monolayers were coupled to silicon surfaces by hydrosilylation in order to avoid an insulating silicon oxide layer at the surface. Monolayers of 1-tetradecyne were shown to passivate silicon micropillar-based solar cells with radial junctions, by which the efficiency increased from 8.7% to 9.9% for n+/p junctions and from 7.8% to 8.8% for p+/n junctions. This electrical passivation of the surface, most likely by removal of dangling bonds, is reflected in a higher shunt resistance in the J–V measurements. Monolayers of 1,8-nonadiyne were still reactive for click chemistry with a model catalyst, thus enabling simultaneous passivation and future catalyst coupling. |
| Databáze: | OpenAIRE |
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