Upconversion Nanophosphors /

Upconversion Nanophosphors provides detailed information about various lanthanide-based upconversion nanoparticles and their application in different fields. It will also help solve fundamental and applied problems of inorganic phosphor materials showing upconversion behavior, as well as generate in...

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Bibliographic Details
Call Number:Libro Electrónico
Other Authors: Thomas, Sabu (Editor), Upadhyay, Kanchan (Editor), Tamrakar, Raunak Kumar (Editor), Kalarikkal, Nandakumar (Editor)
Format: Electronic eBook
Language:Inglés
Published: Amsterdam, Netherlands ; Oxford, United Kingdom ; Cambridge, MA : Elsevier, [2022]
Series:Micro & nano technologies.
Subjects:
Nanoparticles.
Nanoparticles
Nanoparticules.
Online Access:Texto completo
Table of Contents:
  • Front cover
  • Half title
  • Full title
  • Copyright
  • Contents
  • Contributors
  • 1
  • Photoluminescent rare-earth nanocrystal-based characterization methods: Advancements in photophysical applications
  • 1.1 Introduction
  • 1.2 Diffused reflectance spectroscopy
  • 1.3 Photoluminescence spectroscopy
  • 1.4 Down-conversion
  • 1.5 A mechanism of down-conversion
  • 1.6 Upconversion
  • 1.6.1 Upconversion mechanisms and properties
  • 1.6.1.1 Upconversion phosphor system
  • 1.6.2 Host lattice
  • 1.6.3 Dopant system
  • 1.7 Photoluminescence quantum yield
  • 1.8 Challenges and future perspectives
  • References
  • 2
  • What are upconversion nanophosphors: Basic concepts and mechanisms
  • 2.1 Introduction
  • 2.2 Fundamental concepts of photon upconversion
  • 2.2.1 Optical properties of rare-earth ions
  • 2.2.2 Dopant ions: activators and sensitizers
  • 2.2.3 Host material
  • 2.2.4 Modulation of upconversion emissions
  • 2.2.4.1 Controlling Ln 3+ doping concentration
  • 2.2.4.2 Introducing multiple activators
  • 2.2.4.3 Screening the host matrix
  • 2.2.4.4 Luminescence resonance energy transfer
  • 2.3 Upconversion mechanisms
  • 2.4 Excited-state dynamics
  • 2.5 Basic understanding of photophysics
  • 2.6 Applications
  • 2.6.1 Bio-imaging
  • 2.6.2 Bio-sensing and detection
  • 2.6.3 Drug delivery and therapy
  • 2.6.4 Security printing
  • 2.6.5 Thermographic phosphors
  • 2.7 Conclusions
  • References
  • 3
  • Physics of inorganic upconverting nanophosphors and their relevance in applications
  • 3.1 Introduction
  • 3.1.1 Background knowledge and nomenclature
  • 3.1.2 From the Stokes principle to upconversion
  • 3.1.3 Rare-earth elements
  • 3.2 Inorganic phosphors: Hosts and dopants
  • 3.2.1 Host crystals
  • 3.2.2 Activator and sensitizer ions
  • 3.3 Building-block ion-ion interaction mechanisms
  • 3.3.1 Energy transfer
  • 3.3.2 Cross-relaxation
  • 3.3.3 Luminescence quenching
  • 3.4 Upconversion: Fundamentals and dynamics
  • 3.4.1 Mechanisms/pathways leading to upconversion emission
  • 3.4.2 Examples
  • 3.4.2.1 Single doping: Er 3+ ion
  • 3.4.2.2 Co-doping: Yb 3+ -Er 3+ and Yb 3+ -Tm 3+ pairs
  • 3.5 Nanoupconverters
  • 3.5.1 Introduction and relevant applications
  • 3.5.2 Spatial-confinement-related phenomena/effects
  • 3.5.3 Quenching effects
  • 3.5.4 Core-shell architectures
  • 3.5.5 Excited state dynamics
  • 3.6 Conclusions
  • References
  • 4
  • Upconversion photoluminescence properties of ZrO 2 : Ln 3+ /Yb 3+ (Ln = Er, Ho, Tm) films formed by plasma electrolyt ...
  • 4.1 Introduction
  • 4.2 Experimental section
  • 4.2.1 Sample preparation
  • 4.2.2 Measurements and characterization
  • 4.3 Results and discussion
  • 4.3.1 Morphology, chemical, and phase composition of ZrO 2 :Ln 3+ /Yb 3+ films
  • 4.3.2 Upconversion PL of ZrO 2 :Er 3+ /Yb 3+ films
  • 4.3.3 Upconversion PL of ZrO 2 :Ho 3+ /Yb 3+ films
  • 4.3.4 Upconversion PL of ZrO 2 :Tm 3+ /Yb 3+ films

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