Yoann Jestin received his PhD (2002) in solid state chemistry from the “Université du Maine” (France) working on a project supported by the French National Network in Research and Telecommunications. His work was related to the design, manufacturing and testing of large numerical aperture fluoride based optical fibers for the realization of an optical amplifier prototype working in the S-band telecommunication window. In 2003 he joined the research center on laser and application at the University of Lille as a postdoctoral student to study and characterize semiconductor quantum dots in amorphous thin films. After this period he joined the CNR-IFN (Trento, Italy) with a grant from the local government of province of Trento, to work on the development of ultra-transparent glass ceramics waveguides for the demonstration of an optical single frequency amplifier in the C-band telecommunication window. In 2009 he worked as a researcher at the Bruno Kessler Foundation (Trento, Italy) to conduct research on the micro-fabrication of nanocrystalline based silicon solar cells. Since 2013 he won a mobility fellowship to visit the INRS-EMT and experiment new materials and structures for integrated nonlinear optics.

Research interest

Optical spectroscopy, Photonic Band Gap materials, Sol-gel Chemistry, Rare earth spectroscopy, nonlinear optic, optical fibres, planar waveguides, micro resonators, plasmonic, optical sensors, integrated optic, solar cells

Book Chapters

1. Down-Shifting of the Incident Light for Photovoltaic Applications. Jestin Yoann (2012) In: Sayigh A, (ed.) Comprehensive Renewable Energy, Vol 1, pp. 563–585. Oxford: Elsevier.
2. Silicon Quantum Dots for Photovoltaics: A Review, Georg Pucker, Enrico Serra and Yoann Jestin (2012). Quantum Dots – A Variety of New Applications, Dr. Ameenah Al-Ahmadi (Ed.), ISBN: 978-953-51-0483-4, InTech, Available from: http://www.intechopen.com/books/quantum-dots-a-variety-of-new-applications/silicon-quantum-dots-for-photovoltaics

International Journals

1. Quantum effects in silicon photovoltaics P. Ingenhoven, A. Anopchenko, A. Tengattini, D. Gandolfi, F. Sgrignuoli, G. Pucker, Y. Jestin, L. Pavesi and R. Balboni, Physica Status Solidi (A), (in press).
2. Structural analysis and depth profiling of nanometric SiO2/SRO multilayers. M. Barozzi, S. Gennaro, M. Bersani, L. Vanzetti, Y. Jestin, G. Pucker, S. Milita, R. Balboni, Surface and interface analysis 45(1)(2013) pp 373-375.
3. Silicon nanocrystals as a photoluminescence downshifter for solar cells. Z. Yuan, G. Pucker, A. Marconi, F. Sgrignuoli, O. Anopchenko, Y. Jestin, L. Ferrario, P. Bellutti, L. Pavesi, Solar Energy Materials & Solar Cells, 94(4) (2011) pp 1224-1227.
4. Spherical Whispering Gallery Mode Microresonators. A. Chiasera, Y. Dumeige, P. Féron, M. Ferrari, Y. Jestin, G. Nunzi Conti, S. Pelli, S. Soria, G.C. Righini, Laser and photonics reviews, 4 (2010) pp 457-482.
5. Photonic properties and applications of glass micro- and nanospheres. G.C. Righini, F. Cosi, G. Nunzi Conti, S. Pelli, S. Soria, E. Moser, Y. Jestin, M. Ferrari, P. Féron, A. Chiasera, A. Chiappini, C. Armellini, Phys. Status Solidi A, 206 (2009) pp 898-903.
6. An alternative method to obtain direct opal photonic crystal structures. A. Chiappini, C. Armellini, A. Chiasera, M. Ferrari, L. Fortes, M. Clara Gonçalves, R. Guider, Y. Jestin, R. Retoux, G. Nunzi Conti, S. Pelli, Rui M. Almeida, G.C. Righini, Journal of Non-Crystalline Solids, 355 (2009) pp. 1167-1170.
7. Er3+/Yb3+-activated silica-hafnia planar waveguides for photonics fabricated by rf-sputtering. A. Chiasera, C. Armellini, S.N.B. Bhaktha, A. Chiappini, Y. Jestin, M. Ferrari, E. Moser, A. Coppa, V. Foglietti, P.T. Huy, K. Tran Ngoc, G. Nunzi Conti, S. Pelli, G.C. Righini, G. Speranza, Journal of Non-Crystalline Solids, 355 (2009) pp. 1176–1179.
8. Preparation and characterization of ZnO particles embedded in organic–inorganic planar waveguide by sol–gel route. A. Chiappini, C. Armellini, A. Chiasera, M. Ferrari, R. Guider, Y. Jestin, L. Minati, E. Moser, G. Nunzi Conti, S. Pelli, R. Retoux, G.C. Righini, G. Speranza, Journal of Non-Crystalline Solids, 355 (2009) pp. 1132–1135.
9. Characterization of Er3+-doped fluoride glass ceramics waveguides containing LaF3 nanocrystals. B. Boulard, O. Péron, Y. Jestin, M. Ferrari, C. Duverger-Arfuso, Journal of Luminescence, 129 (2009) pp. 1637-1639.
10. X-ray photoelectron spectroscopy of Er3+-activated SiO2–HfO2 glass-ceramic waveguides. L Minati, G Speranza, V Micheli, M Ferrari and Y Jestin, Journal Of Physics D: Applied Physics, 42 (2009) 015408.
11. Structural investigation of photonic materials at the nanolevel using XPS. G. Speranza, L. Minati, A. Chiasera, A. Chiappini, Y. Jestin, M. Ferrari, G.C. Righini, Journal of Non-Crystalline Solids, 355 (2009) pp. 1157–1159.
12. Er3+-activated sol–gel silica confined structures for photonic applications. A. Chiappini, C. Armellini, A. Chiasera, Y. Jestin, M. Ferrari, E. Moser, G. Nunzi Conti, S. Pelli, R. Retoux, G.C. Righini, Optical Materials, 31 (2009) pp. 1275–1279.
13. Raman and Er3+ spectroscopy of hafnia single crystals and nanocrystals. M. Mattarelli, M. Montagna, F. Rossi, C. Tosello, N.D. Afify, M. Bettinelli, A. Speghini, C. Armellini, Y. Jestin, F. Rocca, S. Gialanella Optical Materials, 129 (2009) pp. 1362-1365.
14. Enhanced spectroscopic properties in Er3+/Yb3+-activated fluoride glass–ceramics planar waveguides. O. Péron, C. Duverger-Arfuso, Y. Jestin, B. Boulard, M. Ferrari, Optical Materials, 129 (2009) pp. 1288-1291.
15. Er3+-activated nanocomposite photonic glasses and confined structures. C. Armellin, A. Chiappini, A. Chiasera, M. Ferrari, Y. Jestin, E. Moser, G. Nunzi Conti, S. Pelli, A. Quandt, G.C. Righini, C. Tosello, Optical Materials, 31 (2009) pp1071-1074.
16. Relationship between structure and optical properties in rare-earth-doped hafnium and silicon oxides: modeling and spectroscopic measurements. A. Monteil, M. El-Jouad, G. Alombert-Goget, S. Chaussedent, N. Gaumer, A. Mahot, A. Chiasera, Y. Jestin, M. Ferrari, Journal of Non-Crystalline Solids 354 (2008) pp. 4719-4722.

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1. Silicon solar cells with nano-crystalline silicon down shifter: experiment and modelling. Y. Jestin, G. Pucker, M. Ghulinyan, L. Ferrario, P. Bellutti, A. Picciotto, A. Collini, A. Marconi, O. Anopchenko, Z. Yuan, L. Pavesi, Proc SPIE Vol 7772 (2010) 77720B.
2. Improving resonant photonics devices with sol-gel coatings. Y. Jestin, A.B. Matsko, A.A. Savchenkov, L. Maleki, Proc SPIE Vol 7194 (2009) 71940O-1.
3. Photonic properties of erbium activated coated microspheres. Y. Jestin, C. Armellini, A. Chiappini, A. Chiasera, Y. Dumeige, M. Ferrari, P. Féron, L. Ghisa, G. Nunzi Conti, S. Trebaol, and G. C. Righini, Proc. SPIE Vol. 6890 (2008) 689008
4. Ceramization of erbium activated planar waveguides by bottom-up technique Y. Jestin, C. Arfuso-Duverger, C. Armellini, B. Boulard, A. Chiappini, A. Chiasera, M. Ferrari, E. Moser, G. Nunzi Conti, S. Pelli, O. Peron, R. Retoux, GC. Righini, Proceding SPIE 6469-08 (2007).
5. Erbium activated HfO2 based glass-ceramics waveguides for photonics Y. Jestin, C. Armellini, A. Chiappini, A. Chiasera, M. Ferrari, C.Goyes, M. Montagna, E. Moser, G. Nunzi Conti, S. Pelli, R. Retoux, G.C. Righini, G. Speranza, SiO2006 6th symposium SiO2 advanced dielecrics and related devices
6. Er 3+ activated silica-hafnia glass-ceramics planar waveguides. Y. Jestin, N. Afify, C. Armellini, S. Berneschi, S.N.B. Bhaktha, B. Boulard, A. Chiappini, A. Chiasera, G. Dalba, C. Duverger, M. Ferrari, C.E. Goyes Lopez, M. Mattarelli, M. Montagna, E. Moser, G. Nunzi Conti, S. Pelli, G.C. Righini, F. Rocca. Proc SPIE 6183 (2006) 1W1-1W8.
7. Fabrication of monosized silica spheres with customized diameter by sol-gel route. Y. Jestin, C. Armellini, A. Chiappini, A. Chiasera, M. Ferrari, M. Montagna, E. Moser, G.C. Righini, Proceedings – 13th International Workshop on Sol-Gel Science and Technology, Los Angeles, California, August 21-26, 2005, P85 pp.297-298.
8. Er3+-activated silica-hafnia transparent glass-ceramics planar waveguides. Y. Jestin, N.D. Afify, C. Armellini, S.N.B. Bhatka, B. Boulard, A. Chiappini, A. Chiasera, G.Dalba, C. Duverger, M. Ferrari, M. Mattarelli, M. Montagna, E. Moser, G. Nunzi Conti, S. Pelli, G.C. Righini, F. Rocca, C. Tosello, K.C. Vishunubhatla, L. Zampedri, Proceedings – 13th International Workshop on Sol-Gel Science and Technology, Los Angeles, California, August 21-26, 2005, P84 pp.295-296.