Zobrazeno 1 - 9 of 9 pro vyhledávání: '"Sabrina R Johannsen"'
1
Plasmonically Enhanced Upconversion of 1500 nm Light in Er+3 Doped TiO2
Autor: Harish Lakhotiya, Peter Balling, Jeppe Christiansen, Brian Julsgaard, Emil H. Eriksen, B. Rolighed Jeppesen, Joakim Vester-Petersen, Adnan Nazir, Sabrina R. Johannsen, A. Nylandsted Larsen, S. Peder Madsen
Publikováno v: Light, Energy and the Environment.
Upconversion enhancement of 1500 nm light has been achieved using geometrically optimized Au nano-discs placed in close vicinity of Er+3 ions in a TiO2 matrix. A finite element modeling is compared to the experimental findings.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7f2d609a190eb049dfb27910649c7271
https://doi.org/10.1364/pv.2016.pth4a.6
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2
Influence of TiO2 host crystallinity on Er3+ light emission
Autor: Brian Julsgaard, Søren Roesgaard, Sabrina R. Johannsen, A. Nylandsted Larsen, Jacques Chevallier, Peter Balling, Sanjay K. Ram, R. A. S. Ferreira
Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Johannsen, S R, Nielsen, S R, Julsgaard, B, Ferreira, R A S, Chevallier, J, Balling, P, Ram, S & Larsen, A N 2016, ' Influence of TiO 2 host crystallinity on Er 3+ light emission ', Optical Materials Express, vol. 6, no. 5, pp. 1664-1678 . https://doi.org/10.1364/OME.6.001664
This work presents a study of the luminescence properties of Er3+ when included into two different TiO2 hosts: a polycrystalline and an amorphous host. The two host environments were produced by depositing two thin films with different Er3+ concentra
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22aae122ca299b09ebdf4d5896e2ce0e
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3
Directly patterned TiO2 nanostructures for efficient light harvesting in thin film solar cells
Autor: Kjeld Møller Pedersen, Peter Balling, Yao-Chung Tsao, Pekka T. Neuvonen, Sanjay K. Ram, Ivan Samatov, Thomas Garm Pedersen, Rita Rizzoli, Sabrina R. Johannsen, Arne Nylandsted Larsen, M. Bellettato, Rui N. Pereira, Derese Desta, Bjarke R. Jeppesen
Publikováno v: Journal of physics. D, Applied physics
48 (2015): 365101–365111. doi:10.1088/0022-3727/48/36/365101
info:cnr-pdr/source/autori:Ram, Sanjay K.; Rizzoli, Rita; Desta, Derese; Jeppesen, Bjarke R.; Bellettato, Michele; Samatov, Ivan; Tsao, Yao Chung; Johannsen, Sabrina R.; Neuvonen, Pekka T.; Pedersen, Thomas Garm; Pereira, Rui N.; Pereira, Rui N.; Pedersen, Kjeld; Balling, Peter; Larsen, Arne Nylandsted/titolo:Directly patterned TiO2<%2Finf> nanostructures for efficient light harvesting in thin film solar cells/doi:10.1088%2F0022-3727%2F48%2F36%2F365101/rivista:Journal of physics. D, Applied physics (Print)/anno:2015/pagina_da:365101/pagina_a:365111/intervallo_pagine:365101–365111/volume:48
Ram, S, Rizolli, R, Desta, D, Jeppesen, B R, Bellettato, M, Samatov, I, Tsao, Y-C, Johannsen, S R, Neuvonen, P T, Pedersen, T G, Marques Pereira, R N, Pedersen, K, Balling, P & Larsen, A N 2015, ' Directly patterned TiO2 nanostructures for efficient light harvesting in thin film solar cells ', Journal of Physics D: Applied Physics, vol. 48, no. 36 . https://doi.org/10.1088/0022-3727/48/36/365101
Ram, S K, Rizzoli, R, Desta, D, Jeppesen, B R, Bellettato, M, Samatov, I, Tsao, Y-C, Johannsen, S R, Neuvonen, P T, Pedersen, T G, Pereira, R N, Pedersen, K, Balling, P & Larsen, A N 2015, ' Directly patterned TiO 2 nanostructures for efficient light harvesting in thin film solar cells ', Journal of Physics D: Applied Physics, vol. 48, no. 36, 365101 . https://doi.org/10.1088/0022-3727/48/36/365101
A novel, scalable, and low-cost strategy for fabricating sub-wavelength scale hierarchical nanostructures by direct patterning of TiO2 nanoparticles on glass substrates is reported. Two nanostructural designs of light-trapping back-surface reflectors
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff309c2bc206306408cbfd4a1bd83023
https://publications.cnr.it/doc/348851
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4
Optimization of Er3 +-doped TiO2-thin films for infrared light up-conversion
Autor: Brian Julsgaard, Sanjay K. Ram, Lasse Rosenfeld Lauridsen, Sabrina R. Johannsen, Pekka T. Neuvonen, Arne Nylandsted Larsen
Publikováno v: Johannsen, S R, Lauridsen, L R, Julsgaard, B, Neuvonen, P T, Ram, S & Nylandsted Larsen, A 2014, ' Optimization of Er 3 +-doped TiO 2-thin films for infrared light up-conversion ', Thin Solid Films, bind 550, s. 499–503 . https://doi.org/10.1016/j.tsf.2013.10.123
We have studied up-conversion in TiO 2 thin films doped with Er 3 + deposited using radio frequency-magnetron sputtering. The TiO 2 host was optimized to achieve efficient up-conversion signal from Er 3 + . We controlled the TiO 2 microstructure by v
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f485c72146f567b306aeebca25cd207a
https://pure.au.dk/portal/da/publications/optimization-of-er3-doped-tio2thin-films-for-infrared-light-upconversion(99884acf-3e0b-42f0-8120-a5751c4bdfb0).html
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5
Plasmonically enhanced upconversion of 1500 nm light via trivalent Er in a TiO2 matrix
Autor: Arne Nylandsted Larsen, Brian Julsgaard, Bjarke R. Jeppesen, Emil H. Eriksen, Joakim Vester-Petersen, Harish Lakhotiya, Jeppe Christiansen, Sabrina R. Johannsen, Adnan Nazir, Søren Madsen, Peter Balling
Publikováno v: Lakhotiya, H, Nazir, A, Madsen, S P, Christiansen, J, Eriksen, E, Vester-Petersen, J, Johannsen, S R, Jeppesen, B R, Balling, P, Larsen, A N & Julsgaard, B 2016, ' Plasmonically enhanced upconversion of 1500 nm light via trivalent Er in a TiO2 matrix ', Applied Physics Letters, vol. 109, no. 26, 263102 . https://doi.org/10.1063/1.4972785
In this letter, we present a comparative experimental–simulation study of Au-nanodisc-enhanced upconversion of 1500 nm light in an Er3+ doped TiO2 thin film. The geometry of the Au nanodiscs was guided by finite-element simulations based on a singl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::847980af226a80a46f54282db945db7d
https://doi.org/10.1063/1.4972785
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6
Up-conversion enhancement in Er3+ doped TiO2 through plasmonic coupling: Experiments and finite-element modeling
Autor: Peter Balling, Søren Madsen, Bjarke R. Jeppesen, Arne Nylandsted Larsen, Sabrina R. Johannsen, Jens Vinge Nygaard, Brian Julsgaard
Publikováno v: Johannsen, S R, Madsen, S P, Jeppesen, B R, Nygaard, J V, Julsgaard, B, Balling, P & Nylandsted Larsen, A 2015, ' Up-conversion enhancement in Er3+ doped TiO2 through plasmonic coupling: Experiments and finite-element modeling ', Applied Physics Letters, vol. 106 . https://doi.org/10.1063/1.4907415
Silver nanoparticles, placed on top of an Er3+ doped TiO2 thin film, were investigated as a means of achieving enhanced up-conversion. Finite-element modeling was used to determine the nanoparticle dimensions (height and diameter) yielding the larges
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7bc3ab1f9018478589bc8d8f1254b987
https://doi.org/10.1063/1.4907415
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7
Infrared upconversion in radio frequency magnetron sputtered Er-doped zinc oxide thin films
Autor: Sanjay K. Ram, Arne Nylandsted Larsen, Pekka T. Neuvonen, Sabrina R. Johannsen, Jacques Chevallier, Kristian Sigvardt, Brian Julsgaard
Publikováno v: Neuvonen, P T, Sigvardt, K, Johannsen, S R, Chevallier, J, Julsgaard, B, Ram, S K & Nylandsted Larsen, A 2014, ' Infrared upconversion in radio frequency magnetron sputtered Er-doped zinc oxide thin films ', Applied Physics Letters, vol. 104, no. 10, 102106 . https://doi.org/10.1063/1.4868418
Upconversion in radio frequency magnetron sputtered Er-doped zinc oxide thin films on Si substrate has been demonstrated using 1550 nm cw laser excitation. As-sputtered thin films did not show any upconversion emission, and annealing was required to
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d59c5ce9fee52dae0fbd23298f0cf67
https://doi.org/10.1063/1.4868418
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8
Optimizing Plasmonically Enhanced Upconversion
Autor: Brian Julsgaard, Pia Jensen, Søren Madsen, Peter Balling, Jens Vinge Nygaard, Jacques Chevallier, Sabrina R. Johannsen, Bjarke R. Jeppesen, Arne Nylandsted Larsen
Publikováno v: Madsen, S P, Johannsen, S R, Jeppesen, B R, Nygaard, J V, Jensen, P B, Chevallier, J, Julsgaard, B, Balling, P & Larsen, A N 2015, ' Optimizing Plasmonically Enhanced Upconversion ', Konstanz, Germany, 23/03/2015-25/03/2015, .
Aarhus University
Madsen, S P, Johannsen, S R, Jeppesen, B R, Nygaard, J V, Jensen, P B, Chevallier, J, Julsgaard, B, Balling, P & Larsen, A N 2015, ' Optimizing Plasmonically Enhanced Upconversion ', Energy Procedia, vol. 77, pp. 478-486 . https://doi.org/10.1016/j.egypro.2015.07.068
The light-focusing capability of metal nanoparticles in a periodic square array on top of an upconverting thin film was modeled using the finite-element-frequency-domain method. The particle geometry was optimized for efficient concentration of an in
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57022fe69281b669d11f182bb0b5ff06
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