Search Results - "Kim Dae Hyeon"

High-efficiency electroluminescence and amplified spontaneous emission from a thermally activated delayed fluorescent near-infrared emitter by Kim, Dae-Hyeon, D’Aléo, Anthony, Chen, Xian-Kai, Sandanayaka, Atula D. S., Yao, Dandan, Zhao, Li, Komino, Takeshi, Zaborova, Elena, Canard, Gabriel, Tsuchiya, Youichi, Choi, Eunyoung, Wu, Jeong Weon, Fages, Frédéric, Brédas, Jean-Luc, Ribierre, Jean-Charles, Adachi, Chihaya

“…Near-infrared organic light-emitting diodes and semiconductor lasers could benefit a variety of applications including night-vision displays, sensors and…”
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Synaptic Plasticity and Metaplasticity of Biological Synapse Realized in a KNbO3 Memristor for Application to Artificial Synapse by Lee, Tae-Ho, Hwang, Hyun-Gyu, Woo, Jong-Un, Kim, Dae-Hyeon, Kim, Tae-Wook, Nahm, Sahn

“…Amorphous KNbO3 (KN) films were grown on a TiN/SiO2/Si substrate to synthesize a KN memristor as a potential artificial synapse. The Pt/KN/TiN memristor…”
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8.2 A 96.9%-Peak-Efficiency Bilaterally-Symmetrical Hybrid Buck-Boost Converter Featuring Seamless Single-Mode Operation, Always-Reduced Inductor Current, and the Use of All CMOS Switches by Kim, Dae-Hyeon, Kim, Hyun-Sik

“…The buck-boost converter is essential for managing power on mobile devices that use batteries. It works by regulating the output voltage \left(V_{0}=3.4…”
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Dithia[3.3]paracyclophane Core: A Versatile Platform for Triplet State Fine‐Tuning and Through‐Space TADF Emission by Auffray, Morgan, Kim, Dae Hyeon, Kim, Jong Uk, Bencheikh, Fatima, Kreher, David, Zhang, Qisheng, D'Aléo, Anthony, Ribierre, Jean‐Charles, Mathevet, Fabrice, Adachi, Chihaya

“…Thermally activated delayed fluorescence (TADF) based on through‐space donor and acceptor interactions constitute a recent and promising approach to develop…”
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Robust Design Optimization Considering Static Eccentricity Fault of Six-Phase IPMSM by Kang, Jun-Kyu, Kim, Dae-Hyeon, Heo, Jun-Hyeok, Hur, Jin

“…Static eccentricity fault (SEF) primarily occurs due to external mechanical shocks and incorrect manufacturing processes. In the case of SEF condition,…”
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Thermally stable large strain in low‐loss (Na0.2K0.8)NbO3‐BaZrO3 for multilayer actuators by Kim, Sun‐Woo, Lee, Tae‐Gon, Kim, Dae‐Hyeon, Kim, Eun‐Ji, Kim, Dae Su, Kang, Woo‐Seok, Jo, Wook, Lee, Sang Jin, Han, Seung Ho, Kang, Hyung‐Won, Hong, Youn‐Woo, Nahm, Sahn

“…CuO‐doped (1–x)(Na0.2K0.8)NbO3‐xBaZrO3 ceramics (0.0 ≤ x ≤ 0.06) were densified at 960°C. The ceramic with x = 0 exhibited a large sprout‐shaped strain vs…”
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Structural and piezoelectric properties of textured PZT‐PZNN piezoelectric ceramics by Lee, Tae‐Gon, Lee, Ho‐Jun, Park, Su‐jin, Lee, Tae‐Ho, Kim, Dae‐hyeon, Hong, Chang‐Hyo, Xu, HaiBo, Kang, Chong‐Yun, Nahm, Sahn

“…Rhombohedral 0.69Pb(Zr0.47Ti0.53)‐0.31Pb(Zn0.6Ni0.4)NbO3 (PZT‐PZNN) ceramics were textured using 10.0 vol. % BaTiO3 (BT) platelets along the direction at 950°C…”
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Enhanced near-infrared electroluminescence from a neodymium complex in organic light-emitting diodes with a solution-processed exciplex host by Shahalizad, Afshin, Kim, Dae-Hyeon, Rao Bobbara, Sanyasi, Tsuchiya, Youichi, D'Aléo, Anthony, Andraud, Chantal, Ribierre, Jean-Charles, Nunzi, Jean-Michel, Adachi, Chihaya

“…We report enhanced near-infrared (NIR) electroluminescence from a Nd3+-complex with thenoyltrifluoroacetone and 1,10-phenanthroline ligands. The NIR-emitting…”
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Orthorhombic‐pseudocubic phase transition and piezoelectric properties of (Na0.5K0.5)(Nb1−xSbx)‐SrZrO3 ceramics by Lee, Ku‐Tak, Kim, Dae‐Hyeon, Park, Jong‐Seong, Lee, Tae‐Gon, Cho, Sung‐Hoon, Park, Su‐Jin, Kang, Jong‐Yoon, Nahm, Sahn

“…0.96(Na0.5K0.5)(Nb1−xSbx)‐0.04SrZrO3 ceramics with 0.0≤x≤0.06 were well sintered at 1060°C for 6 hours without a secondary phase. Orthorhombic‐tetragonal…”
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Large Electrostrain in K(Nb1−xMnx)O3 Lead-Free Piezoelectric Ceramics by Kim, Jong-Hyun, Kim, Dae-Hyeon, Lee, Tae-Ho, Lee, Tae-Gon, Lee, Ji-Hyun, Kim, Bo-Yun, Nahm, Sahn, Kang, Chong-Yun, Ryu, Jungho

“…K(Nb1−xMnx)O3 (KN1−xMx) ceramics with 0.005 ≤ x ≤ 0.015 were sintered at 1020°C through a normal sintering process without the formation of a liquid phase…”
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Piezoelectric properties of (Na0.5K0.5)(Nb1‐xSbx)O3‐SrTiO3 ceramics with tetragonal‐pseudocubic PPB structure by Kim, Dae‐Hyeon, Lee, Tae‐Gon, Cho, Sung‐Hoon, Lee, Ku‐Tak, Lee, Tae‐Ho, Hong, Youn‐Woo, Hong, Chang‐Hyo, Kim, Jeong‐Seog, Nahm, Sahn

“…CuO‐added 0.96(Na0.5K0.5)(Nb1‐xSbx)O3‐0.04SrTiO3 ceramics sintered at the low temperature of 960°C for 10 hours showed dense microstructures and high relative…”
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Piezoelectric properties of (Na1−xKx)NbO3‐based lead‐free piezoelectric ceramics and their application in knocking sensor by Kim, Dae‐Hyeon, Lee, Tae‐Gon, Cho, Sung‐Hoon, Lee, Ku‐Tak, Kang, Chong‐Yun, Lee, Won‐Kyoung, Lee, Chung‐Kook, Nahm, Sahn

“…Piezoelectric knocking sensors with a dense microstructure were fabricated at 960°C for 2 hours using various CuO‐added (Na0.5K0.5)NbO3 (NKN)‐based…”
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Influence of sintering conditions on piezoelectric properties of KNbO3 ceramics by Kim, Dae-Hyeon, Joung, Mi-Ri, Seo, In-Tae, Hur, Joon, Kim, Jong-Hyun, Kim, Bo-Yun, Lee, Hwack-Joo, Nahm, Sahn

“…A homogeneous KNbO3 (KN) phase was formed in specimens that were sintered at 1020°C and 1040°C, without formation of the K2O-deficient secondary phase,…”
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Large Strain in CuO-added (Na0.2K0.8)NbO3 Ceramic for Use in Piezoelectric Multilayer Actuators by Lee, Ji-Hyun, Kim, Dae-Hyeon, Seo, In-Tae, Kim, Jong-Hyun, Park, Jong-Seong, Ryu, Jungho, Han, Seung Ho, Jang, Bo-yun, Nahm, Sahn

“…In this study, 1.0 mol% CuO‐added (NaxK1−x)NbO3 (CNxK1−xN) ceramics with 0.0 ≤ x ≤ 0.5 were sintered at a relatively low temperature of 960°C. A large Qm value…”
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CuO‐added KNbO3‐BaZrO3 lead‐free piezoelectric ceramics with low loss and large electric field‐induced strain by Park, Jongseong, Kim, Dae‐Hyeon, Lee, Tae‐Gon, Cho, Sung‐Hoon, Park, Su‐Jin, Ryu, Jungho, Nahm, Sahn

“…CuO‐added (1‐x)KNbO3‐x mol%BaZrO3 ceramics with 0.0≤x≤7.0 were sintered at 960°C. Large double polarization vs electric field (P‐E) and sprout‐shaped strain vs…”
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Effect of Li2O on the defect polarization in CuO‐added (K0.9Na0.1)NbO3 piezoelectric ceramics by Kim, Dae‐Hyeon, Park, Jongseong, Lee, Tae‐Gon, Cho, Sung‐Hoon, Park, Su‐Jin, Lee, Ku‐Tak, Kim, Jong‐Hyun, Nahm, Sahn

“…CuO‐added (LixK0.9−xNa0.1)NbO3 [C(LxK0.9−xN0.1)N] ceramics with 0.0≤x≤0.05 were well‐sintered at 960°C for 6 hours. The lattice parameters of the specimens…”
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Low-Temperature Sintering and Piezoelectric Properties of CuO-Added KNbO3 Ceramics by Kim, Dae-Hyeon, Joung, Mi-Ri, Seo, In-Tae, Hur, Joon, Kim, Jong-Hyun, Kim, Bo-Yun, Lee, Hwack-Joo, Nahm, Sahn

“…Dielectric and piezoelectric properties of CuO‐added KNbO3 (KN) ceramics were investigated. The CuO reacted with the Nb2O5, formed a CuO–Nb2O5‐related liquid…”
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Structural and Piezoelectric Properties of (1−x)Pb(Zr1−yTiy)O3-xPb(Zn0.4Ni0.6)1/3Nb2/3O3 Ceramics Near Triple Point by Hur, Joon, Kim, Jong-Hyun, Lee, Tae-Gon, Seo, In-Tae, Kim, Dae-Hyeon, Nahm, Sahn, Kang, Chong-Yun

“…The crystal structure and piezoelectric properties of (1−x)Pb(Zr1−yTiy)O3‐xPb(Zn0.4Ni0.6)1/3Nb2/3O3 [(1−x)PZ1−yTy‐xPZNN] ceramics were investigated. The…”
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Effects of K2O Evaporation on the Structural Properties of KSbO3 Compounds by Park, Jongseong, Kim, Dae-Hyeon, Park, Su-Jin, Lee, Tae-gon, Im, Mir, Kim, Jeong-Seog, Nahm, Sahn

“…A specimen having a stoichiometric composition of KSbO3·(KSb) calcined at 800°C has an R3¯ rhombohedral structure (RS), and changes to a Pn3¯ cubic structure…”
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Synthesis by a Cost-Effective Method and Electroluminescence of a Novel Efficient Yellowish-Green Thermally Activated Delayed Fluorescent Molecule by Marghad, Ikbal, Kim, Dae Hyeon, Tian, Xiaohui, Mathevet, Fabrice, Gosmini, Corinne, Ribierre, Jean-Charles, Adachi, Chihaya

“…A new thermally activated delayed fluorescent molecule, TRZ 3­(Ph-PTZ), containing three phenothiazines as donor units and a 2,4,6-triphenyl-1,3,5-triazine as…”
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