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Improving efficiency of quantum dot infrared photodetector by using photonic crystal framework in the active layer
KTH, Skolan för bioteknologi (BIO), Teoretisk kemi och biologi.
KTH, Skolan för bioteknologi (BIO), Teoretisk kemi och biologi.ORCID-id: 0000-0002-2442-1809
2011 (engelsk)Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Photonic crystal structure as a framework in both substrate and active layer in quantum dot infrared photodetector is used to improve the interaction between photons and QDs.

sted, utgiver, år, opplag, sider
2011. s. 5942866-
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-94106DOI: 10.1109/CLEOE.2011.5942866Scopus ID: 2-s2.0-80052289144ISBN: 978-145770533-5 (tryckt)OAI: oai:DiVA.org:kth-94106DiVA, id: diva2:525316
Konferanse
2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011; Munich; Germany; 22-26 May 2011
Merknad

QC 20140916

Tilgjengelig fra: 2012-05-07 Laget: 2012-05-07 Sist oppdatert: 2014-09-16bibliografisk kontrollert
Inngår i avhandling
1. Light manipulation in micro and nano photonic materials and structures
Åpne denne publikasjonen i ny fane eller vindu >>Light manipulation in micro and nano photonic materials and structures
2012 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Light manipulation is an important method to enhance the light-matter interactions in micro and nano photonic materials and structures by generating usefulelectric field components and increasing time and pathways of light propagationthrough the micro and nano materials and structures. For example, quantum wellinfrared photodetector (QWIP) cannot absorb normal incident radiation so thatthe generation of an electric field component which is parallel to the original incident direction is a necessity for the function of QWIP. Furthermore, the increaseof time and pathways of light propagation in the light-absorbing quantum wellregion will increase the chance of absorbing the photons.The thesis presents the theoretical studies of light manipulation and light-matter interaction in micro and nano photonic materials and structures, aiming atimproving the performance of optical communication devices, photonic integrateddevices and photovoltaic devices.To design efficient micro and nano photonic devices, it is essential to knowthe time evolution of the electromagnetic (EM) field. Two-dimensional and three-dimensional finite-difference time-domain (FDTD) methods have been adopted inthe thesis to numerically solve the Maxwell equations in micro and nano photonicmaterials and structures.Light manipulation in micro and nano material and structures studied in thisthesis includes: (1) light transport in the photonic crystal (PhC) waveguide, (2)light diffraction by the micro-scale dielectric PhC and metallic PhC structures(gratings); and (3) exciton-polaritons of semiconductor quantum dots, (4) surfaceplasmon polaritons at semiconductor-metallic material interface for subwavelengthlight control. All these aspects are found to be useful in optical devices of multiplebeam splitter, quantum well/dot infrared photodetectors, and solar cells.

sted, utgiver, år, opplag, sider
Stockholm: KTH Royal Institute of Technology, 2012. s. 72
Serie
Trita-BIO-Report, ISSN 1654-2312 ; 2012:13
Emneord
Photonic crystal, quantum dot, light-matter interaction
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-94081 (URN)978-91-7501-353-4 (ISBN)
Disputas
2012-06-01, FD51, AlbaNova Universitetscentrum, Roslagstullsbacken 21, Stockholm, 10:00 (engelsk)
Opponent
Veileder
Merknad
QC 20120507Tilgjengelig fra: 2012-05-07 Laget: 2012-05-07 Sist oppdatert: 2012-05-07bibliografisk kontrollert

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