Phosphors & Nanospectroscopy (PhosNanoSp)5 ECTS
(englische Bezeichnung: Phosphors & Nanospectroscopy)
(Prüfungsordnungsmodul: Phosphors and Nanospectroscopy)

Lehrveranstaltungen:

• • Leuchtstoffe / Phosphors (SS 2019)
    (Vorlesung, 2 SWS, Miroslaw Batentschuk et al., Di, 8:45 - 10:15, 3.71)
  • Nanospektroskopie (WS 2019/2020)
    (Vorlesung, 2 SWS, Wolfgang Heiß et al., Di, 8:30 - 10:00, 3.71)

Inhalt:

The module deals with the basics of phosphor manufacturing and their investigation as well as with new trends in research on this material class. Characterization of phosphors in nano-scale is a part of this module. Moreover, in-depth understanding of several methods used in optical spectroscopy of nano-particles and nano-structures, including spectroscopy with a spatial resolution below the diffraction limit, is one of the most important goals of this module. It is attended to demonstrate the far-reaching possibilities in development of new phosphors and other optical materials as well as importance of investigations with different optical methods for the material engineering and characterization in nano-scale. The lecture Phosphors gives participants a possibility to learn classification of these materials according to their principle of operation and by field of application. The focus of this lecture is on establishing the relationships between crystal structure of phosphors as well as their composition and the desirable absorption and emission properties. Energy transfer between the crystal lattice and active ions as well as between these ions leading to an effective emission are analyzed in details, with consideration of several examples from the literature and by a deep analysis of the own research. Theoretical analysis of phosphor engineering with the purpose to reach maximal energy efficiency during transformation of the ionizing radiation in light is a part of this lecture. Special attention is paid to basics and to methods of storage phosphor manufacturing for biology and medicine: x-ray image plates and nano-markers. Analysis of requirements to the properties and new trends in development of phosphors for white light emitting diodes and for adaptation of the sun light spectrum to the sensitivity of solar cells and plants is an important part of this lecture. The lecture Nanospectroscopy is divided into three main parts: (i) optical spectroscopy, with a spatial resolution below the diffraction limit of visible light; (ii) optical spectroscopy on individual nanostructures, and (iii) optical microscopy with nanometer resolution. It also gives an overview of methods used in optical spectroscopy, including time-resolved laser spectroscopy and scattering measurements. In addition, there is a short introduction to the physics of phosphorus materials. Explicitly, topics such as nanospectroscopy using photothermally induced resonance, nanospectroscopy using X-rays and nanospectroscopy using plasmonic amplification are discussed. The lecture will be complemented by numerous small chapters on optical basics, such as the description of light and fundamental optical effects.

Lernziele und Kompetenzen:

• Learn in-depth the relationships between crystal structure of phosphors as well as their composition and the desirable properties.

• Understanding the basics of energy transfer and its role in the development of phosphors.

• Learn in-depth the phosphor engineering, including phosphors for photovoltaics and storage phosphors for medical application.

• Understanding the processes in phosphors during irradiation with ionizing quanta.

• In-depth understanding of optical measurement methods, which are used for the investigation of nanostructures.

• In-depth learning of optical fundamentals

• Extension of the knowledge horizon by applied examples.

• Acquire knowledge concerning how to perform spectroscopy on materials with high resolution.

• Deepening the knowledge of quantum mechanical descriptions of quantum dots and their optical properties.
  

Literatur:

Lecture notes Books: G. Blasse, B.C. Grabmaier. Luminescent Materials, Springer-Verlag, ISBN 3-540-58019-0 Fundamentals of Flourescence Microscopy: Exploring Life with Light, P. P. Mondal, A. Diaspro-Springer Optical Properties and Spectroscopy of Nanomaterials, Jin Zhong Zhang, World Scientific Nanocrystal quantum dots, 2nd Edition, CRC Press, Chapter 2 Far-Field Optical Nanoscopy, P. Tinnefeld, C. Eggeling, S. W. Hell, Springer

Verwendbarkeit des Moduls / Einpassung in den Musterstudienplan:

1. Advanced Optical Technologies (Master of Science)
   (Po-Vers. 2018w | TechFak | Advanced Optical Technologies (Master of Science) | Gesamtkonto | Major Topics | Optical Metrology | Phosphors and Nanospectroscopy)
2. Advanced Optical Technologies (Master of Science)
   (Po-Vers. 2018w | TechFak | Advanced Optical Technologies (Master of Science) | Gesamtkonto | Major Topics | Optical Materials and Systems | Phosphors and Nanospectroscopy)

Studien-/Prüfungsleistungen:

Phosphors / Leuchtstoffe (Prüfungsnummer: 21501)

(englischer Titel: Phosphors)

Prüfungsleistung, mündliche Prüfung, Dauer (in Minuten): 40, benotet, 2 ECTS

Anteil an der Berechnung der Modulnote: 40.0 %

Erstablegung: SS 2019, 1. Wdh.: WS 2019/2020

1. Prüfer:

Miroslaw Batentschuk

Nanospectroscopy (Prüfungsnummer: 21502)

(englischer Titel: Nanospectroscopy)

Prüfungsleistung, mündliche Prüfung, Dauer (in Minuten): 30, benotet, 3 ECTS

Anteil an der Berechnung der Modulnote: 60.0 %

Erstablegung: WS 2019/2020, 1. Wdh.: SS 2020

1. Prüfer:

Wolfgang Heiß