Search Results - "Jeong Hwan Lee"

Triptycene‐Fused Sterically Shielded Multi‐Resonance TADF Emitter Enables High‐Efficiency Deep Blue OLEDs with Reduced Dexter Energy Transfer by Mubarok, Hanif, Amin, Al, Lee, Taehwan, Jung, Jaehoon, Lee, Jeong‐Hwan, Lee, Min Hyung

“…Designing multi‐resonance (MR) emitters that can simultaneously achieve narrowband emission and suppressed intermolecular interactions is challenging for…”
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Dense Local Triplet States and Steric Shielding of a Multi‐Resonance TADF Emitter Enable High‐Performance Deep‐Blue OLEDs by Cheon, Hyung‐Jin, Woo, Seung‐Je, Baek, Seung‐Hyun, Lee, Jeong‐Hwan, Kim, Yun‐Hi

“…Multi‐resonance thermally activated delayed fluorescence (MR‐TADF) molecules based on boron and nitrogen atoms are emerging as next‐generation blue emitters…”
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Boron‐Based Multi‐Resonance TADF Emitter with Suppressed Intermolecular Interaction and Isomer Formation for Efficient Pure Blue OLEDs by Cheon, Hyung Jin, Shin, Youn‐Seob, Park, Noh‐Hwal, Lee, Jeong‐Hwan, Kim, Yun‐Hi

“…Multi‐resonance (MR) thermally activated delayed fluorescent (TADF) emitters are highly attractive due to their superior color purity as well as efficient…”
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A Fluorescent Organic Light-Emitting Diode with 30% External Quantum Efficiency by Sun, Jin Won, Lee, Jeong-Hwan, Moon, Chang-Ki, Kim, Kwon-Hyeon, Shin, Hyun, Kim, Jang-Joo

“…Almost 100% internal quantum efficiency (IQE) is achieved with a green fluorescent organic light‐emitting diode (OLED) exhibiting 30% external quantum…”
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Sky-Blue Phosphorescent OLEDs with 34.1% External Quantum Efficiency Using a Low Refractive Index Electron Transporting Layer by Shin, Hyun, Lee, Jeong-Hwan, Moon, Chang-Ki, Huh, Jin-Suk, Sim, Bomi, Kim, Jang-Joo

“…Blue‐phosphorescent organic light‐emitting diodes (OLEDs) with 34.1% external quantum efficiency (EQE) and 79.6 lm W−1 are demonstrated using a…”
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Charge carrier mobility in thin films of organic semiconductors by the gated van der Pauw method by Rolin, Cedric, Kang, Enpu, Lee, Jeong-Hwan, Borghs, Gustaaf, Heremans, Paul, Genoe, Jan

“…Thin film transistors based on high-mobility organic semiconductors are prone to contact problems that complicate the interpretation of their electrical…”
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Langevin and Trap-Assisted Recombination in Phosphorescent Organic Light Emitting Diodes by Lee, Jeong-Hwan, Lee, Sunghun, Yoo, Seung-Jun, Kim, Kwon-Hyeon, Kim, Jang-Joo

“…Bimolecular and trap‐assisted recombination mechanisms are investigated in small molecule‐based phosphorescent organic light emitting diodes (PhOLEDs) using…”
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Exciplex-Forming Co-host for Organic Light-Emitting Diodes with Ultimate Efficiency by Park, Young-Seo, Lee, Sunghun, Kim, Kwon-Hyeon, Kim, Sei-Yong, Lee, Jeong-Hwan, Kim, Jang-Joo

“…Phosphorescent organic light‐emitting diodes (OLEDs) with ultimate efficiency in terms of the external quantum efficiency (EQE), driving voltage, and…”
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Perovskite Light‐Emitting Diodes with Improved Outcoupling Using a High‐Index Contrast Nanoarray by Jeon, Sohee, Zhao, Lianfeng, Jung, Young‐Jin, Kim, Ji Whan, Kim, Sei‐Yong, Kang, Hyeokjung, Jeong, Jun‐Ho, Rand, Barry P., Lee, Jeong‐Hwan

“…Organic–inorganic hybrid perovskite light‐emitting diodes (PeLEDs) are promising for next‐generation optoelectronic devices due to their potential to achieve…”
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Highly Efficient Organic Light-Emitting Diodes with Phosphorescent Emitters Having High Quantum Yield and Horizontal Orientation of Transition Dipole Moments by Kim, Kwon-Hyeon, Moon, Chang-Ki, Lee, Jeong-Hwan, Kim, Sei-Yong, Kim, Jang-Joo

“…Ancillary ligands in heteroleptic iridium complexes significantly influence the orientation of the transition dipole moments. Ir(ppy)3, a homoleptic iridium…”
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An Exciplex Forming Host for Highly Efficient Blue Organic Light Emitting Diodes with Low Driving Voltage by Lee, Jeong-Hwan, Cheng, Shuo-Hsien, Yoo, Seung-Jun, Shin, Hyun, Chang, Jung-Hung, Wu, Chih-I, Wong, Ken-Tsung, Kim, Jang-Joo

“…The exciplex forming co‐host with phosphorescent dopant system has potential to realize highly efficient phosphorescent organic light emitting didoes…”
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Highly Enhanced Light Extraction from Surface Plasmonic Loss Minimized Organic Light-Emitting Diodes by Kim, Jung-Bum, Lee, Jeong-Hwan, Moon, Chang-Ki, Kim, Sei-Yong, Kim, Jang-Joo

“…Extremely high light out‐coupling efficiency from a transparent organic light‐emitting diode integrated with microstructures on both sides of the device is…”
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Organic Light-Emitting Diodes with 30% External Quantum Efficiency Based on a Horizontally Oriented Emitter by Kim, Sei-Yong, Jeong, Won-Ik, Mayr, Christian, Park, Young-Seo, Kim, Kwon-Hyeon, Lee, Jeong-Hwan, Moon, Chang-Ki, Brütting, Wolfgang, Kim, Jang-Joo

“…High‐efficiency phosphorescent organic light‐emitting diodes (OLEDs) doped with Ir(ppy)2(acac) [bis(2‐phenylpyridine)iridium(III)‐acetylacetonate] in an…”
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Thermally Activated Delayed Fluorescence from Azasiline Based Intramolecular Charge-Transfer Emitter (DTPDDA) and a Highly Efficient Blue Light Emitting Diode by Sun, Jin Won, Baek, Jang Yeol, Kim, Kwon-Hyeon, Moon, Chang-Ki, Lee, Jeong-Hwan, Kwon, Soon-Ki, Kim, Yun-Hi, Kim, Jang-Joo

“…For electroluminescence with delayed fluorescence, the azasiline unit has been introduced for the first time as a donor in a thermally activated delayed…”
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Blue Phosphorescent Organic Light-Emitting Diodes Using an Exciplex Forming Co-host with the External Quantum Efficiency of Theoretical Limit by Shin, Hyun, Lee, Sunghun, Kim, Kwon-Hyeon, Moon, Chang-Ki, Yoo, Seung-Jun, Lee, Jeong-Hwan, Kim, Jang-Joo

“…A high‐efficiency blue‐emitting organic light‐emitting diode (OLED) approaching theoretical efficiency using an exciplex‐forming co‐host composed of…”
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The Mechanism of Charge Generation in Charge-Generation Units Composed of p-Doped Hole-Transporting Layer/HATCN/n-Doped Electron-Transporting Layers by Lee, Sunghun, Lee, Jeong-Hwan, Lee, Jae-Hyun, Kim, Jang-Joo

“…The rate‐limiting step of charge generation in charge‐generation units (CGUs) composed of a p‐doped hole‐transporting layer (p‐HTL),…”
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Colloidal cesium lead bromide-based anisotropic nanorods for improving outcoupling in perovskite light-emitting diodes by Saleem, Muhammad Imran, Lee, Jeong-Hwan

“…Photon extraction is one of the major issues limiting outcoupling efficiency in perovskite light-emitting diodes (PeLEDs). Light outcoupling in PeLEDs is…”
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Visible‐Light Communication with Lighting: RGB Wavelength Division Multiplexing OLEDs/OPDs Platform by Kim, Dowan, Park, Hyung‐Jun, Jung, Seo‐Hee, Pyo, Won Jun, Hassan, Syed Zahid, Sim, Hye Ryun, Lee, Jeong‐Hwan, Jee, Dong‐Woo, Chung, Dae Sung

“…A multichannel/multicolor visible light communication (VLC) system using entirely organic components, including organic light emitting diodes (OLEDs) and…”
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Firm-Value Effects of Carbon Emissions and Carbon Disclosures—Evidence from Korea by Lee, Jeong-Hwan, Cho, Jin-Hyung

“…We examine the association between carbon emissions, carbon disclosures, and firm value for Korean firms, with a particular interest in chaebols, a special…”
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Tailoring the refractive index and surface defects of CsPbBr3 quantum dots via alkyl cation-engineering for efficient perovskite light-emitting diodes by He, Siwei, Kumar, Neetesh, Beng Lee, Hock, Ko, Keum-Jin, Jung, Young-Jin, Il Kim, Jin, Bae, Sukang, Lee, Jeong-Hwan, Kang, Jae-Wook

“…Short-chained, aromatic phenethylammonium bromide (PEABr) bulky cation engineering mitigate the surface defects and tune the optical refractive index (n) and…”
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