GESNAPHOTO, M.ERA.NET, "Nano-Structured GeSn Coatings for Photonics, 2016-2019

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M.ERA.NET "Nano-Structured GeSn Coatings for Photonics GESNAPHOTO

Project Program: M-ERA.NET Transnational Call 2015

Funded by: UEFISCDI, project number 58/2016, within PNCDI III - Program 3: European and international cooperation, Subprogram 3.2. Horizon 2020

Consortium:

P1 - National Institute of Materials Physics Romania (Project Coordinator); Project Coordinator: Dr. Toma Stoica

P2 - National Institute for Research and Development in Optoelectronics INOE 2000 Romania (Partner); Project Responsible: Dr. Mariana Braic

P3 - Forschungszentrum Jlich, Peter Grnberg Institute (PGI-9) -Germany (Partner); Project Responsible: Prof. Detlev Grtzmacher

P4 -OPTOELECTRONICA-2001 S.A Romania (Partner); Project Responsible: Dr. Alexandra Enuica

P5 - nanoplus Nanosystems and Technologies GmbH -Germany (Partner); Project Responsible: Dr. Johannes Koeth

Abstract

The project has as a main objective the manufacturing of nano-structured GeSn films for optical detection and light emission in the short-wave infrared (SWIR) range. The novelty of the project consists in nano-structuring of layers containing GeSn in order to create GeSn quantum dots (nano-crystals) for increased sensitivity. GeSn is a new group IV advanced coating material based on alloying Ge and Sn elements which extends the IR photonic range of Ge. The most important property is the transition into direct bandgap semiconductor for moderate Sn concentration, of critical importance for photonics of group IV semiconductors. Thus, the project deals with an alternative solution to the present III-V IR technology, a solution which is less expensive, environmentally friendly and compatible with Si technology. The IR detection has many practical applications as for example night vision, medical applications, automotive, aviation, etc.

Objectives and Workpackages

O.1. Synthesis of functionalized coatings (films and multilayers) with nano-structured GeSn;

O.2. Optical and electrical properties tuning for detection and emission in SWIR;

O.3. Fabrication of demonstrators with optimal material parameters.

INOE 2000 is involved in:
WP I  Synthesis by magnetron sputtering of nanostructured GeSn coatings and preliminary characterizations 

WP II Optimization of nanostructured GeSn coatings

WP III  Fabrication of multilayer structures based on GeSn nanocrystals by magnetron sputtering method to be used for optoelectronic demonstrators

WP IV Fabrication of optoelectronic demonstrators based on nanostructured GeSn  

Disemination

Published papers:

  1. GeSn nanocrystals in GeSnSiO2 layers obtained by magnetron sputtering for SWIR detection, A. Slav, C. Palade, C.Logofatu, I. Dascalescu, A. M. Lepadatu, I. Stavarache, S. Iftimie, S. Antohe, S. Lazanu, V. S. Teodorescu, D. Buca, M. L. Ciurea, M. Braic, T. Stoica, ACS Applied Nano Materials (2019), 2. 3626, DOI: 10.1021/acsanm.9b00571.
  2. Epitaxial GeSn obtained by high power impulse magnetron sputtering and the heterojunction with embedded GeSn nanocrystals for shortwave infrared detection, I. Dascalescu, N.C. Zoita, A. Slav, E. Matei, S. Iftimie, F. Comanescu, A.M. Lepadatu, C. Palade, S. Lazanu, D. Bucu, V.S. Teodorescu, M.L. Ciurea, M. Braic, T. Stoica, ACS Applied Materials & Interfaces (2020) 1-22, doi: 10.1021/acsami.0c06212
  3. GeSn/SiO2 multilayers by magnetron sputtering deposition for short-wave infrared photonics, A. Slav, I. Dascalescu, A.M. Lepadatu, C. Palade, N.C. Zoita, H. Stroescu, S. Iftimie, S. Lazanu, M. Gartner, D. Buca, V.S. Teodorescu, M.L. Ciurea, M. Braic, T. Stoica, ACS Applied Materials & Interfaces 12 (2020) 56161-56171, doi: 10.1021/acsami.0c15887

Conference papers

  1. Nanocrystals of GeSn alloys in oxide matrix for optoelectronic applications, I. Stavarache, A. Slav, M. Braic, V. S. Teodorescu, P. Prepelita, C. Palade, A.-M. Lepadatu, S. Lazanu, M. L. Ciurea, D. Stange, D. Buca, T.Stoica, Applied Nanotechnology And Nanoscience International Conference - ANNIC2017, Oct 18-20, 2017-Rome (oral presentation)
  2. Nanocrystals of GeSn alloys in oxide matrix for optoelectronic applications, I. Stavarache, A. Slav, M. Braic, V. S. Teodorescu, P. Prepelita, C. Palade, A.-M. Lepadatu, S. Lazanu, M. L. Ciurea, D. Stange, D. Buca, T.Stoica, Applied Nanotechnology And Nanoscience International Conference - ANNIC2017, Oct 18-20, 2017-Rome (oral presentation).
  3. Ge1-xSnx nanocrystal formation in (Ge1-xSnx)1-y(SiO2)y layers obtained by sputtering deposition, T. Stoica, M. Braic, V.S. Teodorescu, A. Slav, C. Palade, I. Stavarache, M.P. Prepelita, A. Lepadatu, S. Lazanu, M.L. Ciurea, I. Povstugar, D. Stange, D. Grtzmacher, D. Buca, proceedings pp.119120, 1st Joint ISTDM/ICSI 2018 Conference Potsdam, May 27-31, (oral presentation).
  4. "GeSn nanocrystals in GeSn-SiO2 composite films obtained by magnetron sputtering deposition, A. Slav, M. Braic, V.S. Teodorescu, C. Palade, A. Lepadatu, I. Stavarache, M.P. Prepelita, C Logofatu, S. Lazanu, M.L. Ciurea, T. Stoica, EXMATEC 2018 IMT, Bucharest, (oral presentation).
  5. Magnetron sputtering growth of epitaxial GeSn films on Ge buffered Si wafers, N.C. Zoita, I. Pana, A. Kiss, I. Dascalescu, A. Slav, O. Muresan, C. Palade, D. Buca, T. Stoica, M.Braic, E-MRS May 27 - 31, 2019, Nice, France (poster).
  6. GeSnSiO2 layers with embedded GeSn nanocristals for sensing in SWIR, A. Slav, C. Palade, C. Logofatu, I. Dascalescu, A.M. Lepadatu, I. Stavarache, S. Iftimie, V. Braic, S. Antohe, S. Lazanu, V. S. Teodorescu, D. Buca, M. L. Ciurea, T. Stoica, M. Braic, E-MRS May 27 to 31, 2019, Nice, France (oral presentation).
  7. Extension of short-wave infrared detection by Sn alloying of Ge nanocrystals I. Dăscălescu, A. Slav, C. Palade, C. Logofătu, A.M. Lepădatu, F. Comănescu, S. Iftimie, S. Lazanu, V.S. Teodorescu, M.L. Ciurea, M. Braic, T. Stoica, 19 th  International Balkan Workshop on Applied Physics and Materials Science, 16-19.07.2019, Constanța, Romnia (oral presentation).
  8. Nano-structured GeSn coatings for detection and emission of short-wave infrared light, T. Stoica, A. Slav, I. Dascalescu, A.-M. Lepadatu, M. L. Ciurea, D. Buca, D. Stange, N. von den Driesch, D. Grtzmacher, M. Braic, A.E. Kiss, A. Enuica, G. Stan, S. Caramizoiu, N. Schaefer, R. Weih, C. Kistner, J. Koeth, EuroNanoForum, Bucharest from 12-14 June, 2019 (poster)