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

doi:10.1002/adfm.202206040

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

Department of Photonics

Research output: Contribution to journal › Article › peer-review

15 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 language	English
Article number	2206040
Journal	Advanced Functional Materials
Volume	32
Issue number	40
DOIs	https://doi.org/10.1002/adfm.202206040
Publication status	Published - 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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title = "Novel Application of Phosphorescent Material for Non-Volatile Flash Photomemory and Artificial Photonic Synapse",

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.",

author = "Wiyanto, {Lukius Denny} and You, {Bo Ju} and Chiang, {Li Jen} and Yang, {Dong Lin} and Chen, {Jung Yao}",

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T1 - Novel Application of Phosphorescent Material for Non-Volatile Flash Photomemory and Artificial Photonic Synapse

AU - Wiyanto, Lukius Denny

AU - You, Bo Ju

AU - Chiang, Li Jen

AU - Yang, Dong Lin

AU - Chen, Jung Yao

PY - 2022/10/5

Y1 - 2022/10/5

N2 - 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.

AB - 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.

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

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