Hyeonggeun Yu

Works (10)

Updated: January 27th, 2025 08:20

2025 article

Micropatterned Indium-Tin Oxide Grid Electrode for Vertical, Optoelectronic Field-Effect Transistors

Ho, S., Park, J., So, F., & Yu, H. (2025, January 14). ACS APPLIED ELECTRONIC MATERIALS, Vol. 1.

By: S. Ho*, J. Park *, F. So n  & H. Yu*

author keywords: porous indium-tin oxide; photolithography; colloidal lithography; vertical transistor; light-emitting transistor; phototransistor
topics (OpenAlex): Nanowire Synthesis and Applications; Semiconductor materials and devices; Advancements in Semiconductor Devices and Circuit Design
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UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: January 21, 2025

2020 journal article

Direct Acoustic Imaging Using a Piezoelectric Organic Light-Emitting Diode

ACS APPLIED MATERIALS & INTERFACES, 12(32), 36409–36416.

By: H. Yu n, J. Kim n, H. Kim n , N. Barange n, X. Jiang n  & F. So n 

author keywords: ultrasonic sensor; piezoelectric; organic light emitting diode; acousto optic conversion; ultrasound tomography
topics (OpenAlex): Photoacoustic and Ultrasonic Imaging; Optical Imaging and Spectroscopy Techniques; Ultrasound and Hyperthermia Applications
TL;DR: A novel ultrasonic imaging device that can optically display an acoustic signal on the surface of a piezoelectric transducer that is operated without a need for conventional signal processing is reported. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: September 14, 2020

2019 journal article

Defect Passivation by Fullerene Derivative in Perovskite Solar Cells with Aluminum-Doped Zinc Oxide as Electron Transporting Layer

CHEMISTRY OF MATERIALS, 31(17), 6833–6840.

By: Q. Dong n, C. Ho n , H. Yu n, A. Salehi n & F. So n 

topics (OpenAlex): Perovskite Materials and Applications; Conducting polymers and applications; Chalcogenide Semiconductor Thin Films
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: October 7, 2019

2017 journal article

Flexible inorganic ferroelectric thin films for nonvolatile memory devices

Advanced Functional Materials, 27(21).

By: H. Yu, C. Chung, N. Shewmon, S. Ho, J. Carpenter, R. Larrabee, T. Sun, J. Jones  ...

Source: NC State University Libraries
Added: August 6, 2018

2017 journal article

Transparent indium-tin oxide/indium-gallium-zinc oxide Schottky diodes formed by gradient oxygen doping

APPLIED PHYSICS LETTERS, 111(21).

By: S. Ho n, H. Yu n & F. So n 

topics (OpenAlex): Thin-Film Transistor Technologies; Transition Metal Oxide Nanomaterials; Electrical and Thermal Properties of Materials
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

Formation of Perovskite Heterostructures by Ion Exchange

ACS APPLIED MATERIALS & INTERFACES, 8(48), 33273–33279.

By: N. Shewmon n, H. Yu n, I. Constantinou n, E. Klump* & F. So n 

author keywords: hybrid perovskite; single crystal; solution processing; heterojunction; ion exchange
topics (OpenAlex): Perovskite Materials and Applications; Solid-state spectroscopy and crystallography; Optical properties and cooling technologies in crystalline materials
TL;DR: The formation of the MAPbI3 layer is found to be dominated by the diffusion of halide ions, leading to a shift in the photoluminescence and absorption spectra, and carrier transport measurements show that the converted layer retains the high carrier mobility typical of single-crystal perovskite materials. (via Semantic Scholar)
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Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

High-gain infrared-to-visible upconversion light-emitting phototransistors

NATURE PHOTONICS, 10(2), 129-+.

By: H. Yu n, D. Kim *, J. Lee *, S. Baek*, J. Lee  n, R. Singh *, F. So n 

topics (OpenAlex): Thermal Radiation and Cooling Technologies; Luminescence Properties of Advanced Materials; Perovskite Materials and Applications
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

Inorganic UV-Visible-SWIR Broadband Photodetector Based on Monodisperse PbS Nanocrystals

SMALL, 12(10), 1328–1333.

By: J. Lee n, D. Kim *, S. Baek n, H. Yu n & F. So n 

topics (OpenAlex): Quantum Dots Synthesis And Properties; Chalcogenide Semiconductor Thin Films; Perovskite Materials and Applications
TL;DR: Solution-processed inorganic UV-visible short-wave-infrared photodetectors with light sensitivity from 350 nm to 2000 nm are fabricated using highly monodispersed large PbS NCs, showing detectivity values over 1 × 10 Jones. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

Solution-processed copper oxide interlayers for broadband PbS quantum-dot photodiodes

JOURNAL OF MATERIALS CHEMISTRY C, 4(47), 11205–11211.

By: H. Yu n, S. Liu n, S. Baek n, D. Kim *, C. Dong n & F. So n 

topics (OpenAlex): Quantum Dots Synthesis And Properties; Copper-based nanomaterials and applications; Chalcogenide Semiconductor Thin Films
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

Vertical Organic Field-Effect Transistors for Integrated Optoelectronic Applications

ACS APPLIED MATERIALS & INTERFACES, 8(16), 10430–10435.

By: H. Yu n, Z. Dong *, J. Guo *, D. Kim* & F. So n 

author keywords: vertical field-effect transistor; organic light-emitting transistor; Schottky diode; on/off ratio; current saturation
topics (OpenAlex): Conducting polymers and applications; Organic Electronics and Photovoltaics; Transition Metal Oxide Nanomaterials
TL;DR: A VOFET with an on/off ratio up to 10(5) as well as output current saturation is reported by fabricating a transparent gate capacitor consisting of a perforated indium tin oxide (ITO) source electrode, HfO2 gate dielectric, and ITO gate electrode. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

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