Tae‐Woo Lee
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View article: Advancing perovskite nanocrystals for high-resolution LED displays
Advancing perovskite nanocrystals for high-resolution LED displays Open
Halide perovskite nanocrystals are highly attractive luminescent materials for next-generation displays due to their outstanding properties, including high photoluminescence quantum yield, excellent color purity, tunable emission wavelengt…
View article: Kinetically-controlled intermediate-direct-pinning for homogeneous energy landscapes in quasi-two-dimensional perovskites for efficient and narrow blue emission
Kinetically-controlled intermediate-direct-pinning for homogeneous energy landscapes in quasi-two-dimensional perovskites for efficient and narrow blue emission Open
Quasi-two-dimensional perovskite structures hold great potential as active layers in blue perovskite light-emitting diodes. However, they face challenges of limited emission efficiency and broadened spectra due to phase inhomogeneity. Here…
View article: Ferroelectric Quantum Dots for Retinomorphic In‐Sensor Computing
Ferroelectric Quantum Dots for Retinomorphic In‐Sensor Computing Open
Quantum dots (QDs) offer significant potential for neuromorphic machine vision, owing to their high absorption coefficients, and to absorption that spans the ultraviolet‐to‐visible range. However, their practical application faces critical…
View article: Near-infrared-detectable artificial synapses for advanced neuromorphic vision applications
Near-infrared-detectable artificial synapses for advanced neuromorphic vision applications Open
The integration of near-infrared (NIR) light detection with artificial synaptic devices holds immense potential for advancing neuromorphic vision systems, enabling energy-efficient and high-speed data processing beyond conventional von Neu…
View article: Over a Decade of Progress in Metal‐Halide Perovskite Light‐Emitting Diodes
Over a Decade of Progress in Metal‐Halide Perovskite Light‐Emitting Diodes Open
View article: Exciton Bohr radius of lead halide perovskites for photovoltaic and light-emitting applications
Exciton Bohr radius of lead halide perovskites for photovoltaic and light-emitting applications Open
Exciton Bohr radius (a_B) and exciton binding energy (E_b) of metal halide perovskites are two prime quantities in their applications to both light-emitting diode displays and photovoltaic devices. We develop a reliable theoretical method …
View article: Spin switchable optical phenomena in Rashba band structures through intersystem crossing in momentum space in solution-processing 2D-superlattice perovskite film
Spin switchable optical phenomena in Rashba band structures through intersystem crossing in momentum space in solution-processing 2D-superlattice perovskite film Open
View article: Single-photon emission from colloidal perovskite nanocrystals
Single-photon emission from colloidal perovskite nanocrystals Open
Colloidal perovskite nanocrystals emerge as promising single-photon sources, offering bright, coherent emission and room-temperature operation for future scalable quantum communication technologies.
View article: Toward Intrinsically Stretchable OLEDs with High Efficiency
Toward Intrinsically Stretchable OLEDs with High Efficiency Open
Wearable electronics require stretchable displays that can withstand large and repeated mechanical deformation without failure. Intrinsically stretchable organic light‐emitting diodes (ISOLEDs) that operate under DC voltage provide promisi…
View article: Rapidly self-healing electronic skin for machine learning–assisted physiological and movement evaluation
Rapidly self-healing electronic skin for machine learning–assisted physiological and movement evaluation Open
Emerging electronic skins (E-Skins) offer continuous, real-time electrophysiological monitoring. However, daily mechanical scratches compromise their functionality, underscoring urgent need for self-healing E-Skins resistant to mechanical …
View article: Understanding and Circumventing Failure Mechanisms in Chalcogenide Optical Phase Change Material Ge<sub>2</sub>Sb<sub>2</sub>Se<sub>4</sub>Te
Understanding and Circumventing Failure Mechanisms in Chalcogenide Optical Phase Change Material Ge<sub>2</sub>Sb<sub>2</sub>Se<sub>4</sub>Te Open
Chalcogenide optical phase change materials (PCMs) have garnered significant interest for their growing applications in programmable photonics, optical analog computing, active metasurfaces, and beyond. Limited endurance or cycling lifetim…
View article: Efficient Polycrystalline Single‐Cation Perovskite Light‐Emitting Diodes by Simultaneous Intracrystal and Interfacial Defect Passivation
Efficient Polycrystalline Single‐Cation Perovskite Light‐Emitting Diodes by Simultaneous Intracrystal and Interfacial Defect Passivation Open
Polycrystalline perovskite light‐emitting diodes (PeLEDs) have shown great promise with high efficiency and easy processability. However, PeLEDs using single‐cation polycrystalline perovskite emitters have demonstrated low efficiency due t…
View article: Unravelling and circumventing failure mechanisms in chalcogenide optical phase change materials
Unravelling and circumventing failure mechanisms in chalcogenide optical phase change materials Open
Chalcogenide optical phase change materials (PCMs) have garnered significant interest for their growing applications in programmable photonics, optical analog computing, active metasurfaces, and beyond. Limited endurance or cycling lifetim…
View article: Meter-scale van der Waals films manufactured via one-step roll printing
Meter-scale van der Waals films manufactured via one-step roll printing Open
A weak van der Waals (vdW) force in layered materials enables their isolation into thin flakes through mechanical exfoliation while sustaining their intrinsic electronic and optical properties. Here, we introduce a universal roll-printing …
View article: Estimating a Coastal Compound Flood Standard for the Taehwa River Basin
Estimating a Coastal Compound Flood Standard for the Taehwa River Basin Open
The risk of coastal compound flood, caused by the interaction of rainfall and tides, has been increasing with sea level rise and changes in rainfall due to climate change. However, there is no costal compound flood study that considers the…
View article: An Estimation of Water Deficits considering the Hwanggang Dams on the Imjin River, North Korea
An Estimation of Water Deficits considering the Hwanggang Dams on the Imjin River, North Korea Open
Water resources are essential for sustaining economic activities; therefore, water conflicts between nations and regions are common. The Imjin and Bukhan rivers, which are shared by South and North Korea, have been the sources of several d…
View article: Surface-binding molecular multipods strengthen the halide perovskite lattice and boost luminescence
Surface-binding molecular multipods strengthen the halide perovskite lattice and boost luminescence Open
Reducing the size of perovskite crystals to confine excitons and passivating surface defects has fueled a significant advance in the luminescence efficiency of perovskite light-emitting diodes (LEDs). However, the persistent gap between th…
View article: Modulating short-term and long-term plasticity of polymer-based artificial synapses for neuromorphic computing and beyond
Modulating short-term and long-term plasticity of polymer-based artificial synapses for neuromorphic computing and beyond Open
Neuromorphic devices that emulate biological neural systems have been actively studied to overcome the limitations of conventional von Neumann computing structure. Implementing various synaptic characteristics and decay time in the devices…
View article: Ultrasmall 2D Sn‐Doped MAPbBr <sub>3</sub> Nanoplatelets Enable Bright Pure‐Blue Emission
Ultrasmall 2D Sn‐Doped MAPbBr <sub>3</sub> Nanoplatelets Enable Bright Pure‐Blue Emission Open
Synthesis of perovskites that exhibit pure‐blue emission with high photoluminescence quantum yield (PLQY) in both nanocrystal solutions and nanocrystal‐only films presents a significant challenge. In this work, a room‐temperature method is…
View article: Electrically Confined Electroluminescence of Neutral Excitons in WSe<sub>2</sub> Light‐Emitting Transistors (Adv. Mater. 14/2024)
Electrically Confined Electroluminescence of Neutral Excitons in WSe<sub>2</sub> Light‐Emitting Transistors (Adv. Mater. 14/2024) Open
Electrically Confined Electroluminescence In article number 2310498, Gwan-Hyoung Lee and co-workers demonstrate electrically confined electroluminescence of neutral excitons in WSe2 light-emitting transistors (LETs). By achieving balanced …
View article: Natural Biomaterials for Sustainable Flexible Neuromorphic Devices
Natural Biomaterials for Sustainable Flexible Neuromorphic Devices Open
View article: Semi-empirical approach to assess externally-induced photoluminescence linewidth broadening of halide perovskite nanocrystals with particle-size distribution
Semi-empirical approach to assess externally-induced photoluminescence linewidth broadening of halide perovskite nanocrystals with particle-size distribution Open
Colloidal nanocrystals (NCs) can be used to prepare high-color-purity metal halide perovskites (MHPs) for light-emitting displays. However, the NCs have a finite particle-size distribution, which broadens the linewidth of photoluminescence…
View article: Investigation into charge carrier dynamics in organic light-emitting diodes
Investigation into charge carrier dynamics in organic light-emitting diodes Open
Organic light-emitting diodes (OLEDs) have demonstrated remarkable advancements in both device lifetime and luminous efficiency. However, insufficient operation lifetime due to device degradation remains a major hurdle, especially for brig…
View article: Simplified Inverted Polymer Light-Emitting Diodes using Metal Foils as Both a Cathode and Substrate
Simplified Inverted Polymer Light-Emitting Diodes using Metal Foils as Both a Cathode and Substrate Open
We present inverted polymer light-emitting diodes (PLEDs) that use stainless steel (STS) as both a substrate and cathode. By employing mechanical and chemical planarization techniques and depositing a ZnO electron injection layer, we signi…
View article: Advances and future perspectives in polycrystalline halide perovskite light-emitting diodes
Advances and future perspectives in polycrystalline halide perovskite light-emitting diodes Open
Metal halide perovskites (MHPs) have emerged as a highly promising candidate for next-generation light-emitting materials due to their exceptional optoelectronic properties. These properties include superior color purity, high photolumines…
View article: Progress and Prospects of Nanoscale Emitter Technology for AR/VR Displays (Adv. Mater. Technol. 20/2023)
Progress and Prospects of Nanoscale Emitter Technology for AR/VR Displays (Adv. Mater. Technol. 20/2023) Open
View article: Advancements in Electronic Materials and Devices for Stretchable Displays (Adv. Mater. Technol. 20/2023)
Advancements in Electronic Materials and Devices for Stretchable Displays (Adv. Mater. Technol. 20/2023) Open
Stretchable Displays In article number 2201067, Yeongjun Lee, Yongtaek Hong, Youngjun Yun, and co-workers review recent developments in advanced materials and feasible strategies for the realization of stretchable electronic devices for st…
View article: Advances in Solution‐Processed OLEDs and their Prospects for Use in Displays (Adv. Mater. 43/2023)
Advances in Solution‐Processed OLEDs and their Prospects for Use in Displays (Adv. Mater. 43/2023) Open
Organic Light-Emitting Diodes In article number 2207454, Tae-Woo Lee, Tae-Hee Han, and co-workers review the advancements in solution-processed organic light-emitting diodes (OLEDs) that enable low material consumption and large-area manuf…
View article: Bright and stable near-infrared perovskite light emitters supported by multifunctional molecule design strategy
Bright and stable near-infrared perovskite light emitters supported by multifunctional molecule design strategy Open
View article: Molecular Tailoring to Achieve Long‐Term Plasticity in Organic Synaptic Transistors for Neuromorphic Computing
Molecular Tailoring to Achieve Long‐Term Plasticity in Organic Synaptic Transistors for Neuromorphic Computing Open
Organic synaptic transistors (OSTs) using intrinsic polymer semiconductors are demonstrated to be suitable for neuromorphic bioelectronics. However, diketopyrrolopyrrole (DPP)‐based copolymers are not applicable to neuromorphic computing s…