michaeag

Kan ikke hente personopplysninger fra ekstern kilde

Akademiske Interesser

Funksjonelle Tynnfilmer, Nanomaterialer, Solceller, Sensorer, Luminescens, Neutrondetektorer, Optiske Materialer, Passivering

Jobber for tiden på følgende prosjekt: INDet (UiO/SINTEF)

Mål med prosjektet er å øke sensitiviteten til 3D neutrondetektorer ved å optimalisere geometri, materialer og struktur. Min del av prosjektet går ut på å deponere og karakterisere filmer som brukes til å passivere grenseflaten mellom silisium og det neutronabsorberende materialet.

Bakgrunn

Bachelor og master i materialer, energi og nanoteknologi fra Universitetet i Oslo. Doktorgrad innen lyskonverterende tynnfilmer fra Universitetet i Oslo. Jobbet et år som forsker med å utvikle en optisk temperatursensor. Jobbet et halvt år som forsker med deponering og karakterisering av superledende tynnfilmer.

Emneord: SMN, LENS

Getz, Michael Norderhaug; Povoli, Marco; Koybasi, Ozhan; Slavicek, Tomas & Monakhov, Eduard (2023). Gamma-radiation hardness and long-term stability of ALD-Al2O3 surface passivated Si. Journal of Applied Physics. ISSN 0021-8979. 133(15). doi: 10.1063/5.0143013. Fulltekst i vitenarkiv
Povoli, Marco; Kok, Angela Chun Ying; Koybasi, Ozhan; Getz, Michael Norderhaug; O'Neill, George & Röhrich, Dieter [Vis alle 15 forfattere av denne artikkelen] (2023). 3D silicon detectors for neutron imaging applications. Journal of Instrumentation (JINST). ISSN 1748-0221. 18, s. 1–12. doi: 10.1088/1748-0221/18/01/C01056. Fulltekst i vitenarkiv
Getz, Michael Norderhaug; Povoli, Marco & Monakhov, Eduard (2022). Improving ALD-Al2O3 Surface Passivation of Si Utilizing Pre-Existing SiOx. IEEE Journal of Photovoltaics. ISSN 2156-3381. 12(4), s. 929–936. doi: 10.1109/JPHOTOV.2022.3169985. Fulltekst i vitenarkiv
Koybasi, Ozhan; Nordseth, Ørnulf; Tran, Trinh; Povoli, Marco; Rajteri, Mauro & Pepe, Carlo [Vis alle 14 forfattere av denne artikkelen] (2021). High Performance Predictable Quantum Efficient Detector Based on Induced-Junction Photodiodes Passivated with SiO2/SiNx. Sensors. ISSN 1424-8220. 21(23). doi: 10.3390/s21237807. Fulltekst i vitenarkiv Vis sammendrag
We performed a systematic study involving simulation and experimental techniques to develop induced-junction silicon photodetectors passivated with thermally grown SiO2 and plasma-enhanced chemical vapor deposited (PECVD) SiNx thin films that show a record high quantum efficiency. We investigated PECVD SiNx passivation and optimized the film deposition conditions to minimize the recombination losses at the silicon–dielectric interface as well as optical losses. Depositions with varied process parameters were carried out on test samples, followed by measurements of minority carrier lifetime, fixed charge density, and optical absorbance and reflectance. Subsequently, the surface recombination velocity, which is the limiting factor for internal quantum deficiency (IQD), was obtained for different film depositions via 2D simulations where the measured effective lifetime, fixed charge density, and substrate parameters were used as input. The quantum deficiency of induced-junction photodiodes that would be fabricated with a surface passivation of given characteristics was then estimated using improved 3D simulation models. A batch of induced-junction photodiodes was fabricated based on the passivation optimizations performed on test samples and predictions of simulations. Photodiodes passivated with PECVD SiNx film as well as with a stack of thermally grown SiO2 and PECVD SiNx films were fabricated. The photodiodes were assembled as light-trap detector with 7-reflections and their efficiency was tested with respect to a reference Predictable Quantum Efficient Detector (PQED) of known external quantum deficiency. The preliminary measurement results show that PQEDs based on our improved photodiodes passivated with stack of SiO2/SiNx have negligible quantum deficiencies with IQDs down to 1 ppm within 30 ppm measurement uncertainty.
Getz, Michael; Povoli, Marco & Monakhov, Eduard (2021). Effect of the native oxide on the Surface Passivation of Si by Al2O3. Journal of Applied Physics. ISSN 0021-8979. 129(20). doi: 10.1063/5.0051215. Fulltekst i vitenarkiv
Getz, Michael; Nilsen, Ola & Hansen, Per-Anders Stensby (2019). Sensors for optical thermometry based on luminescence from layered YVO4: Ln3+ (Ln = Nd, Sm, Eu, Dy, Ho, Er, Tm, Yb) thin films made by atomic layer deposition. Scientific Reports. ISSN 2045-2322. 9(1). doi: 10.1038/s41598-019-46694-8.
Getz, Michael; Hansen, Per-Anders Stensby; Fjellvåg, Øystein Slagtern; Ahmed, Mohammed Amin Karim; Fjellvåg, Helmer & Nilsen, Ola (2017). Intense NIR emission in YVO4:Yb3+ thin films by atomic layer deposition. Journal of Materials Chemistry C. ISSN 2050-7526. 5(33), s. 8572–8578. doi: 10.1039/c7tc02135f. Fulltekst i vitenarkiv
Getz, Michael; Hansen, Per-Anders; Ahmed, Mohammed Amin Karim; Fjellvåg, Helmer & Nilsen, Ola (2017). Luminescent YbVO4 by atomic layer deposition. Dalton Transactions. ISSN 1477-9226. 46(9), s. 3008–3013. doi: 10.1039/c7dt00253j. Fulltekst i vitenarkiv
Getz, Michael; Hansen, Per-Anders; Fjellvåg, Helmer & Nilsen, Ola (2017). Luminescent properties of europium titanium phosphate thin films deposited by atomic layer deposition. RSC Advances. ISSN 2046-2069. 7(13), s. 8051–8059. doi: 10.1039/c6ra27644j. Fulltekst i vitenarkiv
Sønsteby, Henrik; Chernyshov, Dmitry; Getz, Michael; Nilsen, Ola & Fjellvåg, Helmer (2013). On the application of a single-crystal kappa-diffractometer and a CCD area detector for studies of thin films. Journal of Synchrotron Radiation. ISSN 0909-0495. 20, s. 644–647. doi: 10.1107/S0909049513009102.

Se alle arbeider i Cristin

Kok, Angela Chun Ying; Choolakkal, Arun Haridas; Röhrich, Dieter; Monakhov, Eduard; O'Neill, George & Pedersen, Henrik [Vis alle 15 forfattere av denne artikkelen] (2023). INDet: Lessons Learnt from Boron-coated 3-D Silicon Detector Production.
O'Neill, George; Povoli, Marco; Kok, Angela Chun Ying; Koybasi, Ozhan; Getz, Michael Norderhaug & Röhrich, Dieter [Vis alle 15 forfattere av denne artikkelen] (2022). Predicting Efficiency of INDet Detectors.
Povoli, Marco; Kok, Angela Chun Ying; Koybasi, Ozhan; Getz, Michael Norderhaug; Röhrich, Dieter & O'Neill, George [Vis alle 15 forfattere av denne artikkelen] (2022). 3D silicon detectors for neutron imaging applications.
O'Neill, George; Povoli, Marco; Kok, Angela Chun Ying; Koybasi, Ozhan; Getz, Michael Norderhaug & Röhrich, Dieter [Vis alle 15 forfattere av denne artikkelen] (2022). Simulations Using NCrystal & Geant4 for Innovative Solid-state Neutron Detectors .
Getz, Michael; Hansen, Per-Anders; Nilsen, Ola & Fjellvåg, Helmer (2015). Down Conversion in YbVO4 and YVO4:Yb3+ Thin Films Synthesized by Atomic Layer Deposition .
Getz, Michael; Hansen, Per-Anders; Nilsen, Ola & Fjellvåg, Helmer (2015). Down Conversion in YbVO4 and YVO4:Yb3+ Thin Films Synthesized by Atomic Layer Deposition .
Getz, Michael; Hansen, Per-Anders; Fjellvåg, Helmer & Nilsen, Ola (2014). Enhancing the Efficiency of Solar Cells Using Luminescent EuxTiyPzOw Thin Films Synthesized by ALD.
Getz, Michael; Hansen, Per-Anders; Nilsen, Ola & Fjellvåg, Helmer (2014). Properties of Luminescent Europium Titanium Phosphate Thin Films Synthesized by ALD.
Getz, Michael; Hansen, Per-Anders; Fjellvåg, Helmer & Nilsen, Ola (2013). Avoiding Concentration Quenching of Luminescencewith Thin Films Grown by ALD.
Sønsteby, Henrik; Getz, Michael; Chernyshov, Dmitry; Nilsen, Ola & Fjellvåg, Helmer (2012). Untangling Diffraction Contributions from Epitaxial Thin Films Becomes Easy – Results from Recent Experiments at SNBL.
Getz, Michael; Nilsen, Ola; Fjellvåg, Helmer & Hansen, Per-Anders Stensby (2017). Design and Growth of Luminescent Thin Films by Atomic Layer Deposition. Universitetet i Oslo. ISSN 1501-7710.

Se alle arbeider i Cristin

Publisert 17. mars 2020 16:58 - Sist endret 6. aug. 2020 12:02