TY - JOUR
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
N1 - Funding Information:
The authors thank the financial support from the Ministry of Science and Technology (MOST) in Taiwan (MOST 109‐2636‐E‐006‐027‐, MOST 110‐2636‐E‐006‐025‐ and MOST 111‐2636‐E‐006‐020‐). This research was also supported by Higher Education Sprout Project, Ministry of Education to the Headquarters of University Advancement at National Cheng Kung University. The authors acknowledge the use of JEOL JEM‐2100F Cs STEM[EM000800] and HITACHI SU8000 [EM003600] of MOST 110‐2731‐M‐006‐001 belonging to the Core Facility Center of National Cheng Kung University. The authors also gratefully appreciate the Precision Instruments Center, National Sun Yat‐sen University for transmission electron microscopy analysis.
Funding Information:
The authors thank the financial support from the Ministry of Science and Technology (MOST) in Taiwan (MOST 109-2636-E-006-027-, MOST 110-2636-E-006-025- and MOST 111-2636-E-006-020-). This research was also supported by Higher Education Sprout Project, Ministry of Education to the Headquarters of University Advancement at National Cheng Kung University. The authors acknowledge the use of JEOL JEM-2100F Cs STEM[EM000800] and HITACHI SU8000 [EM003600] of MOST 110-2731-M-006-001 belonging to the Core Facility Center of National Cheng Kung University. The authors also gratefully appreciate the Precision Instruments Center, National Sun Yat-sen University for transmission electron microscopy analysis.
Publisher Copyright:
© 2022 Wiley-VCH GmbH.
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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U2 - 10.1002/adfm.202206040
DO - 10.1002/adfm.202206040
M3 - Article
AN - SCOPUS:85135251869
SN - 1616-301X
VL - 32
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 40
M1 - 2206040
ER -