General:* Developing new and improving upon existing processes and products, both internally and for external customers, a number of which I have been in the lead. * GreenBelt approach to process development such as DOE, FMEA, Control Plans, Root-Cause Analysis and 8D projects*Involved in the procurement of fabrication tools during the SMART Photonics ramp-up. * Translator of the meeting minutes between the Ondernemingsraad and CEO from Dutch to English. Fabrication & Characterisation Experience:A wide range of semiconductor fabrication techniques in a Class 10,000 cleanroom incl. lithography, wet etching, plasma deposition/etching, metal evaporation/sputtering, grinding & polishing, scribe & break, wafer bonding, SEM, et al.

Supervisors: dr. Sjoerd Veenstra (Solliance ECN), dr. Dong Zhang (Solliance ECN), dr. Wilfried van Sark (Utrecht)This internship involved investigating whether p-type a-SiOx:H could be used as a hole transport layer (HTL) in perovskite solar cells (PSCs). p-type a-SiOx:H layers were fabricated and characterised and later full solar cells fabricated and characterised. Different architectures and processes were tested. The results from this internship suggest that it is not possible to use p-type a-SiOx:H as a HTL in PSCs due to there being a large barrier to the extraction of the holes, leading to very low short-circuit currents, fill-factors and efficiencies.Fabrication: PECVD, RF Magnetron Sputtering, Spin-Coating, Thermal Evaporation.Characterisation: Hall probe, Kelvin probe, 4-point probe, surface profiling, reflectance/transmission, contact angle measurements, AFM, IV-curves.Other: Cleanroom (category 10,000) experience

Organised activities for the department such as a quiz, bowling, trip to the Nemo museum in Amsterdam and others.

Supervisors: prof. dr. Daniël Vanmaekelbergh, dr. Ingmar Swart & drs. Joep PetersThe project focused on the possibility of utilising cation exchange (CE) - a powerful emerging technique to post-synthetically modify the composition of a material - to convert honeycomb superlattices of PbSe formed through the oriented attachment of quantum dots into HgSe. Ultimately, it was not possible to perform CE on the superlattices due to them washing away from the solid support during the reaction. The focus was then shifted to performing CE on the individual QDs. PbSe QDs were completely converted to CdSe and then the CdSe QDs were mostly converted to HgSe.Synthesis: Quantum Dot synthesis, cation exchange, N2 glovebox.Primary characterisation: UV-Vis, TEM, ICP-OES.Secondary characterisation: EDX, AFM, FT-IR.

Supervisor: Dr Paul Thornton.Explored the prospect of applying ring opening polymerisation (ROP) chemistry to facilitate catalytic reactions.Characterisation: 1H NMR, FT-IR, SEM, Thermogravimetric analysis (TGA), Dynamic Light Scattering (DLS).

Supervisor: Prof Paul SeakinsExplored, by computer modelling, the kinetic processes in the combustion of dimethyl ether – a promising alternative green fuel candidate.Software: Kintecus, MS Excel.