Search Results - "Kim, Junghwan"

In-Cylinder Pressure Based Engine Knock Classification Model for High-Compression Ratio, Automotive Spark-Ignition Engines Using Various Signal Decomposition Methods by Kim, Junghwan

“…Engine knock determination has been conducted in various ways for spark timing calibration. In the present study, a knock classification model was developed…”
Get full text

Role of RE in the deformation and recrystallization of Mg alloy and a new alloy design concept for Mg–RE alloys by Jung, In-Ho, Sanjari, Mehdi, Kim, Junghwan, Yue, Stephen

“…The roles of rare earth elements on the texture weakening of Mg alloy are critically assessed. Two main roles are (i) the changing of stacking fault energy of…”
Get full text

Does Obesity Paradox Exist in COVID-19 Mortality? by Kim, JungHwan

“…KCI Citation Count: 0…”
Get full text

Achieving Large‐Area Planar Perovskite Solar Cells by Introducing an Interfacial Compatibilizer by Lee, Jinho, Kang, Hongkyu, Kim, Geunjin, Back, Hyungcheol, Kim, Junghwan, Hong, Soonil, Park, Byoungwook, Lee, Eunhag, Lee, Kwanghee

“…Despite the recent unprecedented increase in the power conversion efficiencies (PCEs) of small‐area devices (≤0.1 cm2), the PCEs deteriorate drastically for…”
Get full text

Perovskite seeding growth of formamidinium-lead-iodide-based perovskites for efficient and stable solar cells by Zhao, Yicheng, Tan, Hairen, Yuan, Haifeng, Yang, Zhenyu, Fan, James Z., Kim, Junghwan, Voznyy, Oleksandr, Gong, Xiwen, Quan, Li Na, Tan, Chih Shan, Hofkens, Johan, Yu, Dapeng, Zhao, Qing, Sargent, Edward H.

“…Formamidinium-lead-iodide (FAPbI 3 )-based perovskites with bandgap below 1.55 eV are of interest for photovoltaics in view of their close-to-ideal bandgap…”
Get full text

Material Design of p‐Type Transparent Amorphous Semiconductor, Cu–Sn–I by Jun, Taehwan, Kim, Junghwan, Sasase, Masato, Hosono, Hideo

“…Transparent amorphous semiconductors (TAS) that can be fabricated at low temperature are key materials in the practical application of transparent flexible…”
Get full text

Dipolar cations confer defect tolerance in wide-bandgap metal halide perovskites by Tan, Hairen, Che, Fanglin, Wei, Mingyang, Zhao, Yicheng, Saidaminov, Makhsud I., Todorović, Petar, Broberg, Danny, Walters, Grant, Tan, Furui, Zhuang, Taotao, Sun, Bin, Liang, Zhiqin, Yuan, Haifeng, Fron, Eduard, Kim, Junghwan, Yang, Zhenyu, Voznyy, Oleksandr, Asta, Mark, Sargent, Edward H.

“…Efficient wide-bandgap perovskite solar cells (PSCs) enable high-efficiency tandem photovoltaics when combined with crystalline silicon and other low-bandgap…”
Get full text

Transparent amorphous oxide semiconductors for organic electronics: Application to inverted OLEDs by Hosono, Hideo, Kim, Junghwan, Toda, Yoshitake, Kamiya, Toshio, Watanabe, Satoru

“…Efficient electron transfer between a cathode and an active organic layer is one key to realizing high-performance organic devices, which require electron…”
Get full text

Suppression of atomic vacancies via incorporation of isovalent small ions to increase the stability of halide perovskite solar cells in ambient air by Saidaminov, Makhsud I., Kim, Junghwan, Jain, Ankit, Quintero-Bermudez, Rafael, Tan, Hairen, Long, Guankui, Tan, Furui, Johnston, Andrew, Zhao, Yicheng, Voznyy, Oleksandr, Sargent, Edward H.

“…The degradation of perovskite solar cells in the presence of trace water and oxygen poses a challenge for their commercial impact given the appreciable…”
Get full text

More than travel time: New accessibility index capturing the connectivity of transit services by Kim, Junghwan, Lee, Bumsoo

“…Various qualities of transit services, including travel time, frequency, and the presence of alternative paths, affect accessibility—how easily passengers can…”
Get full text

High-performance proton-exchange membrane water electrolysis using a sulfonated poly(arylene ether sulfone) membrane and ionomer by Park, Ji Eun, Kim, Junghwan, Han, Jusung, Kim, Kihyun, Park, SungBin, Kim, Sungjun, Park, Hyun S., Cho, Yong-Hun, Lee, Jong-Chan, Sung, Yung-Eun

“…Sulfonated poly(arylene ether sulfone) with degree of sulfonation of 50 mol.% (SPAES50) was synthesized for the preparation of a hydrocarbon-based membrane and…”
Get full text

Rainfall intensity-duration thresholds for landslide prediction in South Korea by considering the effects of antecedent rainfall by Hong, Moonhyun, Kim, Junghwan, Jeong, Sangseom

“…This study was conducted to determine the rainfall intensity-duration thresholds (ID curves) for landslide prediction by considering the effects of antecedent…”
Get full text

Controlling Molecular Ordering in Aqueous Conducting Polymers Using Ionic Liquids by Kee, Seyoung, Kim, Nara, Kim, Bong Seong, Park, Seongjin, Jang, Yun Hee, Lee, Seoung Ho, Kim, Jehan, Kim, Junghwan, Kwon, Sooncheol, Lee, Kwanghee

“…The molecular ordering of aqueous conducting polymers is controlled using a rational method. By introducing various ionic liquids, which have designed…”
Get full text

Cascade surface modification of colloidal quantum dot inks enables efficient bulk homojunction photovoltaics by Choi, Min-Jae, García de Arquer, F. Pelayo, Proppe, Andrew H., Seifitokaldani, Ali, Choi, Jongmin, Kim, Junghwan, Baek, Se-Woong, Liu, Mengxia, Sun, Bin, Biondi, Margherita, Scheffel, Benjamin, Walters, Grant, Nam, Dae-Hyun, Jo, Jea Woong, Ouellette, Olivier, Voznyy, Oleksandr, Hoogland, Sjoerd, Kelley, Shana O., Jung, Yeon Sik, Sargent, Edward. H.

“…Control over carrier type and doping levels in semiconductor materials is key for optoelectronic applications. In colloidal quantum dots (CQDs), these…”
Get full text

Design of multistage fixed bed reactors for SMR hydrogen production based on the intrinsic kinetics of Ru-based catalysts by Lee, Jaewon, Joo, Chonghyo, Cho, Hyungtae, Kim, Youngjin, Ga, Seongbin, Kim, Junghwan

“…[Display omitted] •On-site hydrogen refueling stations require efficient catalysts/reactors.•Intrinsic kinetics of Ru catalysts were estimated using a…”
Get full text

Unintended Carbon-Related Impurity and Negative Bias Instability in High-Mobility Oxide TFTs by Shiah, Yu-Shien, Sim, Kihyung, Ueda, Shigenori, Kim, Junghwan, Hosono, Hideo

“…Amorphous oxide semiconductors (AOS) with high-mobility (>40 cm 2 /Vs) have recently become common for next-generation displays. While several candidates have…”
Get full text

Thermally induced mechanical response of energy piles in axially loaded pile groups by Jeong, Sangseom, Lim, Hyunsung, Lee, Joon Kyu, Kim, Junghwan

“…In this study, the thermo-mechanical behavior of the energy piles in a pile group is investigated by coupled multi-physical 3D finite element analyses. The…”
Get full text

Towards high performance Li metal batteries: Surface functionalized graphene separator with improved electrochemical kinetics and stability by Kwon, Kihwan, Kim, Junghwan, Roh, Kwangchul, Kim, Patrick Joohyun, Choi, Junghyun

“…Lithium (Li) metal is a promising anode for next-generation batteries owing to its ultrahigh theoretical capacity (3,860 mAh g−1) and the lowest reduction…”
Get full text

Metal–Organic Frameworks Mediate Cu Coordination for Selective CO2 Electroreduction by Nam, Dae-Hyun, Bushuyev, Oleksandr S, Li, Jun, De Luna, Phil, Seifitokaldani, Ali, Dinh, Cao-Thang, García de Arquer, F. Pelayo, Wang, Yuhang, Liang, Zhiqin, Proppe, Andrew H, Tan, Chih Shan, Todorović, Petar, Shekhah, Osama, Gabardo, Christine M, Jo, Jea Woong, Choi, Jongmin, Choi, Min-Jae, Baek, Se-Woong, Kim, Junghwan, Sinton, David, Kelley, Shana O, Eddaoudi, Mohamed, Sargent, Edward H

“…The electrochemical carbon dioxide reduction reaction (CO2RR) produces diverse chemical species. Cu clusters with a judiciously controlled surface coordination…”
Get full text

An Examination of People’s Privacy Concerns, Perceptions of Social Benefits, and Acceptance of COVID-19 Mitigation Measures That Harness Location Information: A Comparative Study of the U.S. and South Korea by Kim, Junghwan, Kwan, Mei-Po

“…This paper examines people’s privacy concerns, perceptions of social benefits, and acceptance of various COVID-19 control measures that harness location…”
Get full text