Solid-State Photon Upconversion Materials: Structural Integrity and Triplet-Singlet Dual Energy Migration

Research output: Contribution to journalReview article

10 Citations (Scopus)

Abstract

Triplet-triplet annihilation-based photon upconversion (TTA-UC) is a process wherein longer-wavelength light (lower-energy photons) is converted into shorter-wavelength light (higher-energy photons) under low excitation intensity in multichromophore systems. There have been many reports on highly efficient TTA-UC in solution; however, significant challenges remain in the development of solid-state upconverters in order to explore real-world applications. In this Perspective, we discuss the advantages and challenges of different approaches for TTA-UC in solvent-free solid systems. We consider that the energy migration-based TTA-UC has the potential to achieve ideal materials with high UC efficiency at weak solar irradiance. While the UC performance of such systems is still limited at this moment, we introduce recently developed important concepts to improve it, including kinetic/thermodynamic donor dispersion in acceptor assemblies, defectless crystals, and triplet-singlet dual energy migration. Future integration of these concepts into a single material would realize the ideal TTA-UC system.

Original languageEnglish
Pages (from-to)4613-4624
Number of pages12
JournalJournal of Physical Chemistry Letters
Volume9
Issue number16
DOIs
Publication statusPublished - Aug 16 2018

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Structural integrity
integrity
Photons
solid state
photons
energy
Wavelength
irradiance
wavelengths
assemblies
Thermodynamics
moments
thermodynamics
Crystals
Kinetics
kinetics
excitation
crystals

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physical and Theoretical Chemistry

Cite this

Solid-State Photon Upconversion Materials : Structural Integrity and Triplet-Singlet Dual Energy Migration. / Joarder, Biplab; Yanai, Nobuhiro; Kimizuka, Nobuo.

In: Journal of Physical Chemistry Letters, Vol. 9, No. 16, 16.08.2018, p. 4613-4624.

Research output: Contribution to journalReview article

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