Zobrazeno 1 - 10
of 40
pro vyhledávání: '"H. G. Svavarsson"'
Autor:
Agust Valfells, Andrei Manolescu, H. G. Svavarsson, Hákon Örn Árnason, Movaffaq Kateb, M. T. Sultan
Publikováno v:
Nano Select, Vol 2, Iss 12, Pp 2346-2357 (2021)
The present work reports the evolution and growth of GeGaAs(O) polytype nanoislands over GaAs p‐type substrate with photoemission application in mind. Several morphological transformations from NIs to simultaneously present nanopits/holes are obser
Autor:
Magdalena Lidia Ciurea, Valentin S. Teodorescu, Ionel Stavarache, H. G. Svavarsson, Constantin Logofatu, Andrei Manolescu, M. T. Sultan
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-9 (2020)
Scientific Reports
Scientific Reports
Publisher's version (útgefin grein)
Films of SiGe nanocrystals (NCs) in oxide have the advantage of tuning the energy band gap by adjusting SiGe NCs composition and size. In this study, SiGe-SiO2 amorphous films were deposited by magnetron sput
Films of SiGe nanocrystals (NCs) in oxide have the advantage of tuning the energy band gap by adjusting SiGe NCs composition and size. In this study, SiGe-SiO2 amorphous films were deposited by magnetron sput
Autor:
H. G. Svavarsson, M. T. Sultan, S. Ingvarsson, Andrei Manolescu, Neculai Plugaru, R. Plugaru, E. Fakhri
Publikováno v:
2021 International Semiconductor Conference (CAS).
Silicon nanowires (SiNWs) hold potential applications in optoelectronics and SiNW-based optical sensors. Here, a photoluminescence study of SiNW arrays fabricated with a simple two-step silver (Ag) catalyzed etching of silicon wafers is presented. Th
Autor:
Andrei Manolescu, S. Ingvarsson, H. O. Arnason, U. B. Arnalds, Agust Valfells, H. G. Svavarsson, M. T. Sultan
Publikováno v:
2021 International Semiconductor Conference (CAS).
We investigate the formation and evolution of Ga droplets over GaAs (001) substrate with and without Ge top layer (8 nm). Various morphological transformation from holes to droplets formation were observed as a function of annealing parameters. It wa
Autor:
Snorri Ingvarsson, Andrei Manolescu, M. T. Sultan, Magdalena Lidia Ciurea, Jon Tomas Gudmundsson, H. G. Svavarsson
Publikováno v:
2021 International Semiconductor Conference (CAS).
We investigate the photoluminescence properties of structures comprising of Si1-xGex nanoparticles (NPs) within SiO2, GeO2, TiO2 and Ta2O5 oxide matrices. Of the investigated structures, it was observed that the structures with GeO2 and TiO2 matrices
Autor:
Jon Tomas Gudmundsson, A.V. Maraloiu, Ionel Stavarache, H. G. Svavarsson, Magdalena Lidia Ciurea, M. T. Sultan, Andrei Manolescu, Valentin S. Teodorescu
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 10, Iss 1, Pp 1873-1882 (2019)
Beilstein Journal of Nanotechnology
Beilstein Journal of Nanotechnology
Publisher's version (útgefin grein)
Multilayer structures comprising of SiO2/SiGe/SiO2 and containing SiGe nanoparticles were obtained by depositing SiO2 layers using reactive direct current magnetron sputtering (dcMS), whereas, Si and Ge were
Multilayer structures comprising of SiO2/SiGe/SiO2 and containing SiGe nanoparticles were obtained by depositing SiO2 layers using reactive direct current magnetron sputtering (dcMS), whereas, Si and Ge were
Autor:
Magdalena Lidia Ciurea, Jon Tomas Gudmundsson, H. G. Svavarsson, Andrei Manolescu, M. T. Sultan, Toma Stoica
Publikováno v:
Applied Surface Science. 479:403-409
We investigate the effect of room-temperature hydrogen-plasma treatment on the photoconductivity of SiGe nanoparticles sandwiched within SiO2 layers. An increase in photocurrent intensity of more than an order magnitude is observed after the hydrogen
Autor:
Kristinn Torfason, Ionel Stavarache, H. G. Svavarsson, Andrei Manolescu, Constantin Logofatu, George Alexandru Nemnes, Jon Tomas Gudmundsson, Valentin S. Teodorescu, Magdalena Lidia Ciurea, M. T. Sultan
Publikováno v:
Applied Surface Science. 469:870-878
Photosensitive films based on finely dispersed semiconductor nanocrystals (NCs) in dielectric films have great potential for sensor applications. Here we report on preparation and characterization ...
Publikováno v:
2020 IEEE Research and Applications of Photonics in Defense Conference (RAPID).
Hydrogenation is a widely used method to improve performance of electronic devices made from silicon but much less frequently to improve corresponding optical properties. Here, we study the possible use of hydrogenation to reduce inherent optical los
Autor:
Guðrún A. Sævarsdóttir, Bryndís Björnsdóttir, David C. Finger, Lea Lea Böhme, H. G. Svavarsson
Circular economy solutions reuse and upcycle waste streams in order to minimize the use of resources and mitigate the creation of waste and emissions. Accordingly, circular economy solutions are an essential tool to tackle the imminent challenges of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0cb6952bbbe761e0d0fd233b7cdfae7
https://doi.org/10.5194/egusphere-egu2020-18282
https://doi.org/10.5194/egusphere-egu2020-18282