{ "meta": { "api_type": "NWO Projects API", "version": "1.0.2", "licence": { "name": "CC0 1.0 Universal", "url": "https://creativecommons.org/publicdomain/zero/1.0", "description": "To the extent possible under law, all copyright and related or neighbouring rights have been waived worldwide to the data made available through this API." }, "documentation": "https://doi.org/10.5281/zenodo.14918287", "release_date": "2025-08-20T00:00:00", "funder": "https://doi.org/10.13039/501100003246", "ror_id": "https://ror.org/04jsz6e67", "date": "2026-11-05T00:00:00", "count": 1, "per_page": 100, "pages": 1, "page": 1 }, "projects": [ { "project_id": "10016", "title": "Fluidized Bed ALD for Core-Shell Quantum Dots", "funding_scheme_id": 121, "funding_scheme": "Perspectief Thin Film Nanomanufacturing (TFN) 2007 STW", "department": "Toegepaste en Technische Wetenschappen", "sub_department": "Technologiestichting STW", "start_date": "2008-03-01T00:00:00", "end_date": "2012-02-28T00:00:00", "reporting_year": 2007, "summary_nl": "The aim of this project is to develop Fluidized Bed Atomic Layer Deposition (FB-ALD) technology for coating semiconducting quantum dots (Q-dots) with ultra-thin functional coatings. FB-ALD is a novel nano-manufacturing technique in which a fluidized bed is created via a gas flow through a bed of (dry) nanoparticles. By pulsed dosing of precursor chemicals in the gas flow, thin coatings can be deposited in a controlled, layer-by-layer manner, and uniform coating of the Q-dots can be achieved. The resulting core-shell quantum dots form the building blocks for next generation opto-electronic devices, such as photovoltaic solar cells and photo-catalysts. As a result of quantum confinement effects in the core, strong modification of the optical and electronic characteristics can occur. One example is the generation of multiple electron-hole pairs upon absorption of a single photon, so-called impact ionisation. Enormous efficiency enhancements can be achieved due to these effects, forming the basis for 3rd generation photovoltaic solar cells with theoretical efficiencies of up to 66%. The function of the surrounding ultra-thin shell is to offer chemical protection for the Q-dot and to enable fast and efficient extraction of the charge carriers. The structure of the core-shell interface and the extent of carrier multiplication and similar effects will be studied with high-resolution electron microscopy and spectroscopic techniques, respectively. Active participation of our industrial partners in the design and construction of the FB-ALD reactor and with analysis of the synthesized materials ensures efficient knowledge transfer and utilisation. The FB-ALD technology that we propose to develop may become a key enabler for large-scale manufacturing of core-shell nanosystems, and aims to bridge the gap between fundamental research and device development. As such, it potentially gives Dutch companies a head start and may help them to secure and maintain leading positions in the highly competitive international field of opto-electronic devices based on semiconductor nanocrystals, such as 3rd generation PV cells.", "summary_en": "The aim of this project is to develop Fluidized Bed Atomic Layer Deposition (FB-ALD) technology for coating semiconducting quantum dots (Q-dots) with ultra-thin functional coatings. FB-ALD is a novel nano-manufacturing technique in which a fluidized bed is created via a gas flow through a bed of (dry) nanoparticles. By pulsed dosing of precursor chemicals in the gas flow, thin coatings can be deposited in a controlled, layer-by-layer manner, and uniform coating of the Q-dots can be achieved. The resulting core-shell quantum dots form the building blocks for next generation opto-electronic devices, such as photovoltaic solar cells and photo-catalysts. As a result of quantum confinement effects in the core, strong modification of the optical and electronic characteristics can occur. One example is the generation of multiple electron-hole pairs upon absorption of a single photon, so-called impact ionisation. Enormous efficiency enhancements can be achieved due to these effects, forming the basis for 3rd generation photovoltaic solar cells with theoretical efficiencies of up to 66%. The function of the surrounding ultra-thin shell is to offer chemical protection for the Q-dot and to enable fast and efficient extraction of the charge carriers. The structure of the core-shell interface and the extent of carrier multiplication and similar effects will be studied with high-resolution electron microscopy and spectroscopic techniques, respectively. Active participation of our industrial partners in the design and construction of the FB-ALD reactor and with analysis of the synthesized materials ensures efficient knowledge transfer and utilisation. The FB-ALD technology that we propose to develop may become a key enabler for large-scale manufacturing of core-shell nanosystems, and aims to bridge the gap between fundamental research and device development. As such, it potentially gives Dutch companies a head start and may help them to secure and maintain leading positions in the highly competitive international field of opto-electronic devices based on semiconductor nanocrystals, such as 3rd generation PV cells.", "project_members": [ { "role": "Researcher", "member_id": 205207, "last_name": "Didden", "degree_pre_nominal": "dr. ir.", "initials": "A.P.", "first_name": "Arjen", "organisation": "Technische Universiteit Delft||Faculteit Technische Natuurwetenschappen||Chemical Engineering||Anorganische Chemie", "organisation_id": 81244, "ror": "https://ror.org/02e2c7k09", "active": false }, { "role": "Co-applicant", "member_id": 175661, "last_name": "Goossens", "degree_pre_nominal": "dr.", "initials": "A.P.L.M.", "first_name": "Albert", "organisation": "Technische Universiteit Delft||Faculteit Technische Natuurwetenschappen||Chemical Engineering||Anorganische Chemie", "organisation_id": 81244, "ror": "https://ror.org/02e2c7k09", "active": true }, { "role": "Co-applicant", "member_id": 232092, "last_name": "Dam", "degree_pre_nominal": "prof. dr.", "initials": "B.", "first_name": "Bernard", "organisation": "Technische Universiteit Delft||Faculteit Technische Natuurwetenschappen||Chemical Engineering||Materials for Energy Conversion and Storage (MECS)", "organisation_id": 80237, "ror": "https://ror.org/02e2c7k09", "active": true }, { "role": "Main Applicant", "member_id": 109506, "last_name": "Krol", "degree_pre_nominal": "prof. dr.", "initials": "R.", "first_name": "Roel", "prefix": "van de", "organisation": "Helmholtz-Zentrum Berlin für Materialen und Energie||Institute Solar Fuels (E-I6)", "organisation_id": 2989, "ror": "-", "active": true }, { "role": "Project leader", "member_id": 109506, "last_name": "Krol", "degree_pre_nominal": "prof. dr.", "initials": "R.", "first_name": "Roel", "prefix": "van de", "organisation": "Helmholtz-Zentrum Berlin für Materialen und Energie||Institute Solar Fuels (E-I6)", "organisation_id": 2989, "ror": "-", "active": true } ], "products": [ { "title": "Titanium nitride: A new Ohmic contact material for n-type CdS\n", "year": 2011, "edition": "10", "start": 33717, "type": "Wetenschappelijk artikel", "journal_title": "Journal of Applied Physics", "authors": [ { "last_name": "Didden", "initials": "A.P.", "first_name": "Arjen", "role": "Auteur", "index_number": 1 }, { "last_name": "Dam", "initials": "B.", "first_name": "Bernard", "role": "Auteur", "index_number": 4 }, { "last_name": "Battjes", "initials": "H.", "first_name": "Hemme", "role": "Auteur", "index_number": 2 }, { "last_name": "Krol", "initials": "R.", "first_name": "Roel", "prefix": "van de", "role": "Auteur", "index_number": 5 }, { "last_name": "Machunze", "initials": "R.", "role": "Auteur", "index_number": 3 } ] } ] } ] }