Novel Application of Phosphorescent Material for Non-Volatile Flash Photomemory and Artificial Photonic Synapse

Lukius Denny Wiyanto, Bo Ju You, Li Jen Chiang, Dong Lin Yang, Jung Yao Chen

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Phosphorescent materials have received considerable attention in organic solar cells (OSCs) due to their long emission lifetime and inhibited geminate recombination. Motivated by its particular photophysical property, herein, the spatially addressable bis(2-benzo[b]thiophen-2-ylpyridine)(acetylacetonate)iridium(III) (Ir(bt)2(acac))/polystyrene-b-poly(4-vinylpyridine) (PS-b-P4VP) as a photoactive floating-gate is first demonstrated to explore the application of phosphorescent material on the photo-responsive characteristics of photomemory and artificial photonic synapse. By manipulating the interfacial area between Ir(bt)2(acac)/PS-b-P4VP and active channel by a solvent annealing process, an ON/OFF current ratio of 103 and a low programming time of 700 ms can be achieved. The current study addresses the exciton lifetime of photoactive material functions in photomemory and highlights the interfacial area between photoactive materials and charge-carrier transporting materials in reducing photo-programming time.

Original languageEnglish
Article number2206040
JournalAdvanced Functional Materials
Volume32
Issue number40
DOIs
Publication statusPublished - 2022 Oct 5

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • General Chemistry
  • Condensed Matter Physics
  • General Materials Science
  • Electrochemistry
  • Biomaterials

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