PRESENTATIONS

Dongkyu Lee, "Effect of Heterointerfaces Formed by Metal Exsolution on the Thermoelectric Properties of La0.7Ca0.2Ni0.25Ti0.75O3 Thin Films", invited talk, The ACerS Electronic Materials and Applications (EMA) 2024, Feb. 15 (2024), Denver, CO

Dongkyu Lee, “Overcoming the trade-off relationship of thermopower-conductivity in transition metal oxides”, invited talk, 2023 University of Science and Technology Global Mentoring Conference, Aug. 1 (2023) Seoul, South Korea

Dongkyu Lee, “Epitaxial Design of Functional Oxides for Energy Applications”, invited talk, 2022 University of Science and Technology Global Mentoring Conference, Jul. 6 (2022) Seoul, South Korea

Gene Yang, Mohammad El Loubani, Yuxi Ma, David Hill, and Dongkyu Lee, “Understanding Relationships between Structural Geometry, Interface, and Property in Oxide Nanostructured Materials for Intermediate Temperature Solid Oxide Electrochemical Devices”, invited talk, 2021 KSEA-UKC conference-Solid Oxide Cell Forum, Dec. 16 (2021) Garden Grove, CA

Gene Yang, Yuxi Ma, Evan Helfrick, and Dongkyu Lee, “Achieving Fast Oxygen Reduction Reaction by Modifying Oxide Thin Films”, invited talk, 2021 ACS Fall, Aug. 24 (2021) Atlanta, GA

Yang Shao-Horn and Dongkyu Lee, “Oxygen Electrocatalysis on Transition Metal Oxides”, SECA Cathode Telecom on Intrinsic Cathode Performance/Stability, invited talk, Jun. 17 (2014) Webinar. 

Mohammad El Loubani, Gene Yang and Dongkyu Lee, “Colossal Enhancement of the Thermoelectric Power Factor of La0.7Ca0.2Ni0.25Ti0.75O3 Epitaxial Thin Films by Metal Exsolution”, Materials Science & Technology (MS&T) 23, Oct 1-4 (2023), Columbus, OH

Gene Yang, Mohammad El Loubani, Habib Rostaghi Chalaki, Jiwon Kim and Dongkyu Lee, “Understanding the influence of strain-modified oxygen vacancies and surface chemistry on the oxygen reduction reaction of epitaxial La0.8Sr0.2CoO3-δ thin films”, 2023 Center for Nanophase Materials Sciences International User Meeting, Aug. 7-8 (2023) Crowne Plaza Knoxville, TN

Mohammad El Loubani, Gene Yang and Dongkyu Lee, “Colossal Enhancement of the Thermoelectric Power Factor of La0.7Ca0.2Ni0.25Ti0.75O3 Epitaxial Thin Films by Metal Exsolution”, 2023 Center for Nanophase Materials Sciences International User Meeting, Aug. 7-8 (2023) Crowne Plaza Knoxville, TN

Dev Kamleshkumar Shah, Gene Yang, Mohammad El Loubani, and Dongkyu Lee, “Understanding of interface property relationships of vertically aligned Ruddlesden Popper oxide heterostructures” 2023 Summer Research Symposium, Jul. 27 (2023) Columbia, SC

JonPaul Hooks, Mohammad El Loubani, Gene Yang, Ben Richardson, and Dongkyu Lee, “Tuning the Thermoelectric Properties of Epitaxial SrRuO3 Thin Films by Controlling Oxygen Vacancies” 2023 Summer Research Symposium, Jul. 27 (2023) Columbia, SC

Jiwon Kim, Gene Yang, Mohammad El Loubani, and Dongkyu Lee, “Enhancement of the oxygen reduction reaction of epitaxial La0.8Sr0.2CoO3-δ thin films with surface decoration of binary oxides”, 2023 Discover UofSC, Apr. 21 (2023) Columbia, SC

Gene Yang, Mohammad El Loubani, and Dongkyu Lee, “Enhancement of ionic conductivity by controlling interfacial strain in Gd doped CeO2- RE2O3 (RE = Y and Sm) vertically aligned heterostructures”, 2023 Discover UofSC, Apr. 21 (2023) Columbia, SC

Mohammad El Loubani, Gene Yang, and Dongkyu Lee, “Enhancement of the Thermoelectric Power Factor of Cobalt-based Oxide Thin Films by Using Epitaxial Strain”, 2023 Discover UofSC, Apr. 21 (2023) Columbia, SC

Gene Yang, Mohammad El Loubani, and Dongkyu Lee, “Strain effect on oxygen reduction reaction of epitaxial La0.8Sr0.2CoO3-δ thin films”, 2023 SC EPSCoR State Conference, Apr.14 (2023) Summerville, SC

Mohammad El Loubani, Gene Yang, and Dongkyu Lee, “Effect of Strain on the Thermoelectric Properties of Epitaxial La0.8Sr0.2CoO3-δ Thin Films”, 2023 SC EPSCoR State Conference, Apr. 14 (2023) Summerville, SC

Jiwon Kim, Gene Yang, Mohammad El Loubani, and Dongkyu Lee, “Improving the oxygen reduction reaction of epitaxial La0.8Sr0.2CoO3-δ thin films by surface decoration”, 2023 SC EPSCoR State Conference, Apr. 14 (2023) Summerville, SC

Mohammad El Loubani, Gene Yang, David Hill, and Dongkyu Lee, “Improving the thermoelectric properties of strained La0.8Sr0.2CoO3 Thin Films”, Materials Science & Technology (MS&T) 22, Oct. 9-12 (2022) Pittsburgh, Pennsylvania.

Gene Yang, Mohammad El Loubani, Yuxi Ma, and Dongkyu Lee, “Designing Vertically Strained Interfaces to Understand the Structure-Strain-Oxygen Reduction Reaction Relationships”, Materials Science & Technology (MS&T) 22, Oct. 9-12 (2022) Pittsburgh, Pennsylvania.

Gene Yang, Mohammad El Loubani, Yuxi Ma, and Dongkyu Lee, “Understanding the Structure-Strain-Ion Conduction Relationships in Fluorite-Bixbyite Heterostructures”, 2022 Center for Nanophase Materials Sciences International User Meeting, Aug. 15-16 (2022) Oak Ridge National Laboratory, Oak Ridge, TN

Mohammad El Loubani, Gene Yang, David Hill, and Dongkyu Lee, “Enhancing the Power Factor of Perovskite Oxides by Epitaxial Strain”, 2022 Center for Nanophase Materials Sciences International User Meeting, Aug. 15-16 (2022) Oak Ridge National Laboratory, Oak Ridge, TN

Colin Stevenson, Gene Yang, Mohammad El Loubani, Dario Handrick, Habib Rostaghi, and Dongkyu Lee, “Optimizing Thermoelectric Properties of Oxide Materials in Thin Film Form”, 2022 Summer Research Symposium, Jul. 28 (2022) Columbia, SC

Dario Handrick, Gene Yang, Mohammad El Loubani, Colin Stevenson, and Dongkyu Lee, “Strain Influence on the Oxygen Electrocatalysis of Epitaxial La0.8Sr0.2CoO3 Thin Films”, 2022 Summer Research Symposium, Jul. 28 (2022) Columbia, SC

Gene Yang, Mohammad El Loubani, Yuxi Ma, and Dongkyu Lee, “Enhancement of Ionic Conductivity by Controlling Interfacial Strain in Fluorite Gd-doped CeO2-Bixbyite RE2O3 (RE = Y and Sm) Vertically Aligned Oxide Heterostructures”, the 23rd International Conference on Solid State Ionics (SSI-23), July 17-22 (2022) Boston, MA

Gene Yang, Mohammad El Loubani, Yuxi Ma, and Dongkyu Lee, “Understanding the Effect of Interfacial Strain on Ion Conduction in Fluorite Gd-doped CeO2-Bixbyite Re2O3 (RE = Y and Sm) Multilayer Thin Films”, 2022 Discover UofSC, Apr. 22 (2022) Columbia, SC

Mohammad El Loubani, Gene Yang, David Hill, and Dongkyu Lee, “Effect of Strain on the thermoelectric properties of epitaxial La0.8Sr0.2CoO3 Thin Films”, 2022 Discover UofSC, Apr. 22 (2022) Columbia, SC

David Hill, Gene Yang, Mohammad El Loubani, and Dongkyu Lee, “Studying the Effect of Oxygen Vacancies on Thermoelectric Properties of epitaxial La1.85Sr0.15CuO4 thin films”, 2022 Discover UofSC, Apr. 22 (2022) Columbia, SC

Gene Yang, Yuxi Ma, and Dongkyu Lee, “Enhancement of Ionic Conductivity by Controlling Interfacial Strain in Fluorite Gd-doped CeO2-Bixbyite Re2O3 (RE = Y and Sm) Multilayer Thin Films”, 6th Asian SOFC Symposium and Exhibition, Nov. 7-10 (2021) Jeju, South Korea

Gene Yang, Yuxi Ma, and Dongkyu Lee, “Strain-induced Ionic Conductivity at the interface between Fluorite Gd-doped CeO2 and Bixbyite Re2O3 (RE = Y and Sm)”, 2021 Center for Nanophase Materials Sciences International User Meeting, Aug. 8-9 (2021) Oak Ridge National Laboratory, Oak Ridge, TN

Gene Yang, Evan Helfrick, Yuxi Ma, and Dongkyu Lee, “Tuning thermoelectric properties by controlling oxygen vacancies in epitaxial La1.85Sr0.15CuO4 thin films”, 2021 Discover UofSC, Apr. 23 (2021) Columbia, SC

Yuxi Ma, Gene Yang, Evan Helfrick, and Dongkyu Lee, “Strain Influence on the Oxygen Reduction Reaction of Epitaxial La0.8Sr0.2CoO3 Thin Films”, 2021 Discover UofSC, Apr. 23 (2021) Columbia, SC

Mohammad El Loubani, Gene Yang, and Dongkyu Lee, “Creation of nanoscale speckle patterns with metal oxides on carbon fibers by pulsed laser deposition”, 2021 Discover UofSC, Apr. 23 (2021) Columbia, SC

Shiyue Zhu, Gene Yang, Wonsang Jung, Yueh-Lin Lee, Kevin Huang, Dongkyu Lee, “Large Enhancement of Oxygen Surface Exchange Kinetics in Ruddlesden–Popper Thin Films by Thickness Controlled Strain”, the 236th ECS Meeting, Oct. 13-17 (2019) Atlanta, Georgia

Gene Yang, Yueh-Lin Lee, Wonsang Jung, Kevin Huang, Yuhua Duan, and Dongkyu Lee, “Controlling the Crystallographic Orientation of Ruddlesden–Popper Epitaxial Thin Films for Enhancing Oxygen Surface Exchange Kinetics at Intermediate Temperatures”, the 22nd International Conference on Solid State Ionics, Jun 16-21 (2019) Pyeong-Chang, Korea

Dane Morgan, Shenzhen Xu, Ryan Jacobs, Wei Xie, Dongkyu Lee, Ho-Nyung Lee, “Oxygen Point Defect Formation and Migration in Ruddlesden-Popper Phases”, 2018 Materials Science & Technology, Oct 14-18 (2018), Columbus, Ohio

Dongkyu Lee, Xiang Gao, Youngseok Jee, Lisha Fan, Erjia Guo, Jonathan D. Poplawsky, Thomas O. Farmer, William T. Heller, Kevin Huang, Michael R. Fitzsimmons, Matthew F. Chisholm, and Ho Nyung Lee, “Large enhancement of ionic conduction in vertically aligned single crystal-line oxide nanosuperlattices”, 24th International Workshop on Oxide Electronics, Sept. 24-27 (2017) Chicago, IL

Tricia L. Meyer, Ryan Jacobs, Dongkyu Lee, John W. Freeland, Changhee Sohn, Dane Morgan, Ho Nyung Lee, “Strain control of oxygen kinetics in epitaxial Ruddlesden-Popper oxides”, 24th International Workshop on Oxide Electronics, Sept. 24-27 (2017) Chicago, IL

Dongkyu Lee, Xiang Gao, Lisha Fan, Erjia Guo, Thomas O. Farmer, William T. Heller, Michael R. Fitzsimmons, Matthew F. Chisholm, and Ho Nyung Lee, “Non-equilibrium Synthesis of Vertically ordered Tree-like Single Crystalline Oxide Nanostructures”, 21st American Conference on Crystal Growth and Epitaxy (ACCGE-21), Jul. 30- Aug. 4 (2017), Santa Fe, NM

Changhee Sohn, Dongkyu Lee, Xiang Gao, Ho Nyung Lee, “Strain control of cationic distribution in Bi4Ti3O12-BiFeO3 composite films” 21st American Conference on Crystal Growth and Epitaxy (ACCGE-21), Jul. 30- Aug. 4 (2017), Santa Fe, NM

Dongkyu Lee, Ryan Jacobs, Youngseok Jee, S. S. Ambrose Seo, Changhee Sohn, Kevin Huang, Dane Morgan, and Ho Nyung Lee, “Improving Oxygen Electrocatalysis in Perovskite Thin Films by Epitaxial Strain”, 2017 Materials Research Society Spring Meeting, Apr. 17-21 (2017) Phoenix, AZ

Changhee Sohn, Dongkyu Lee, Xiang Gao, Ho Nyung Lee, “Deterministic Control of Cationic Substitution by Strain in Bi4Ti3O12-BiFeO3 Epitaxial Thin Films”, 2017 Materials Research Society Spring Meeting, Apr. 17-21 (2017) Phoenix, AZ

Dongkyu Lee, Youngseok Jee, S. S. Ambrose Seo, Jong Keum, and Ho Nyung Lee, “Colossal Enhancement of Oxygen Electrocatalysis in La1-xSrxCoO3-δ Thin Films by Epitaxial Strain”, 2016 Materials Research Society Spring Meeting, Mar. 28 – Apr. 1 (2016), Phoenix, AZ

Dongkyu Lee, Lu Jiang, Donghwa Lee, Yang Shao-Horn, and Ho Nyung Lee, “Crystallogrphic Orientation Dependent Oxygen Electorcatalysis in Epitaxial La2-xSrxCuO4-δ Thin Films”, 2016 Materials Research Society Spring Meeting, Mar. 28 – Apr. 1 (2016), Phoenix, AZ

Yueh-Lin Lee, Dongkyu Lee, Wesley T. Hong, Dane Morgan, and Yang Shao-Horn, “Ab Initio Surface Stability Analysis of La1-xSrxMO3-δ (M = Co, Fe) and the Effect of (La,Sr)2CoO4±δ/La1-xSrxMO3-δ Hetero-interface on Oxygen Electrocatalysis at Elevated Temperatures, 2014 Materials Reserach Society Meeting, Nov. 30 – Dec. 5 (2014), Boston, MA

Dongkyu Lee, Yueh-Lin Lee, Alexis Grimaud, Wesley Hong, Michael D. Biegalski, Dane Morgan, and Yang Shao-Horn, “Strontium Influence on the Oxygen Electrocatalysis of Epitaxial La2-xSrxNiO4±δ (0 ≤ X ≤ 1.0) Thin Films at Elevated Temperatures”, 2014 Materials Research Society Spring meeting, Arp. 21-25 (2014) San Francisco, CA

Dongkyu Lee, Zhenxing Feng, Wesley T. Hong, Michael D. Biegalski, Dane Morgan, Stuart Adler, and Yang Shao-Horn, “A2BO4 Decoration Influence on the Oxygen Electrocatalysis of Epitaxial La0.6Sr0.4Co0.2Fe0.8O3-δ Thin Films at Elevated Temperatures”, SECA 14th Annual Workshop, July 23-24 (2013) Pittsburg, PA,

Dongkyu Lee, Alexis Grimaud, Ethan Crumlin, Zhenxing Feng, Wesley Terrence Hong, Michael D. Biegalski, Hans M. Christen, and Yang Shao-Horn, “A Kinetic Study of Oxygen Reduction Reaction on a-axis normal La2NiO4+δ Thin Films for Solid Oxide Fuel Cells”, 2012 Materials Research Society Fall meeting, Nov. 25-30 (2012), Boston, MA

Dongkyu Lee, Zhenxing Feng, Wesley Hong, Ethan Crumlin, Michael D. Biegalski, Hans M. Christen, and Yang Shao-Horn, “Enhancement of Surface Electrocatalytic Activity on La0.8Sr0.2CoO3-δ by La0.8Sr0.2MnO3-δ Decoration”, 2012 Materials Research Society Fall meeting, Nov. 25-30 (2012), Boston, MA

L. Wang, S. Imashuku, A. Grimaud, Dongkyu Lee, Yang Shao-Horn, “Enhancing oxygen 5. permeation performance of electronically short-circuited oxygen-ion conductor by decorating with mixed ionic-electronic conducting oxide thin films”, 2012 Materials Research Society Fall meeting, Nov. 25-30 (2012) Boston, MA

Ethan Crumlin, Sungjin Ahn, Dongkyu Lee, Eva Mutoro, Michael D. Biegalski, Hans M. Christen, and Yang Shao-Horn, “Enhanced Oxygen Reduction Activity of Surface Modified Lanthanum Strontium Cobaltite (LSC) Epitaxial Thin Films for SOFCs”, 2011 Materials Research Society Fall meeting, Nov. 28 – Dec. 2 (2011) Boston, MA

Dongkyu Lee, Sungho Heo, Changhee Cho, G. H. Buh, Tai-su Park, Yugyun Shin, and Hyunsang Hwang, “Effects of Excimer Laser Annealing on p+/n Ultra-Shallow Junction”, The 13th Korean Conference on Semiconductor PF2-40, p1201 (2006)

Dongkyu Lee, Sungho Heo, and Hyunsang Hwang, “Ultra-Shallow p+/n Junction Prepared by heavy dopant activated by excimer laser annealing”, The 2005 NAIST/GIST International Joint Symposium on Advanced Materials, P5, p.17 (2005) Kyeongju, Korea

Dongkyu Lee, Sungkweon Baek, S. G. Tavakoli, Sungho Heo, Hyejung Choi, Yunik Son, and Hyunsang Hwang, “Electrical Characteristics of n+/p Ultra-shallow junction with Arsenic Ion-Implantation”, The 12th Korean Conference on Semiconductor, G15, p439 (2005) Seoul, Korea

Sungho Heo, Sungkweon Baek, Dongkyu Lee, Hyungseok Jung, Jonho Lee, and Hyunsang Hwang, “The study of high-k dielectric and ultrashallow junction for Ge nMOSFET device”, The 13th Korean Conference on Semiconductor, TG2-3, p155, 2006

Sungho Heo, Sungkweon Baek, Dongkyu Lee, G. H. Buh, Yugyun Shin, and Hyunsang Hwang, “Formation of n+/p ultrashallow junction with arsenic ion-implantation and Study of hydrogen effects for Sub-50nm nMOSFET”, The 12th Korean Conference on Semiconductor, F15, p373, 2005

Sungho Heo, Sungkweon Baek, Dongkyu Lee, Hyungsuk Jung, and Hyunsang Hwang, “Germanium Ultra-Shallow n+/p Junction Formed by Low Energy Plasma Doping and  Laser Annealing”, 2005 Materials Research Society Spring meeting, E9.14, p.129, 2005

Sungho Heo, Sungkweon Baek, Dongkyu Lee, Hyungsuk Jung, Geoffroy Raskin, Gray Goodman and Hyungsuk Jung, and Hyunsang Hwang, “Sub 15nm n+/p Germanium shallow junction formed by plasma doping and excimer laser annealing”, 2005 European Materials Research Society Spring meeting, D/PI. 05, 2005

Sungkweon Baek, Sungho Heo, Dongkyu Lee, Yunik Son, and Hyunsang Hwang, “The Role of hydrogen in dopant activation/diffusion behavior for plasma doping and laser annealing”, 2005 European Materials Research Society Spring meeting, D-II. 05, 2005

Sungkweon Baek, Sungho Heo, Dongkyu Lee, Won-Ju Cho, Kiju Im, Chan-Geun Ahn, Jong-Heon Yang, In-Bok Baek, Seongjae Lee, and Hyungsang Hwang, “Study of the hydrogen effect on dopant activation for the plasma doping and ion implantation”, 2005 Materials Research Society Spring meeting, E10.3, p.135, 2005