Awards & Press

2018.08.23
Ph.D. candidate Song Jinouk of Yoo Seunghyup's team succeeded in realizing a highly efficient organic light emitting diode (OLED) corresponding to inorganic LED. OLED is used as a light source in many mobile devices and display technologies such as high-quality TVs. It has the advantage of being able to make thin and flexible devices. In recent years, many efforts have been made to use OLEDs for lighting and automobile light sources. The efficiency of the light source is very important for such applications. Recently, the efficiency of OLED has been steadily increased due to continuous research and development, and some results have been reported based on the conventional high-efficiency inorganic LED level. However, the research results of such high-efficiency OLEDs have been limited to commercialization due to problems such as hemispherical lenses that hinder the advantages of surface light sources of OLEDs or light extracting nanostructures that hindering the stable operation of the device. Yoo's team has focused on introducing nanoparticle-based light scattering layers outside of the device, which is the most feasible technology among the various methods developed for light extraction of OLEDs. Unlike conventional OLED light extraction enhancement studies using light scattering, which have been conducted empirically through repeated experiments, the team has developed a comprehensive and analytical methodology and theoretically predicts structures that can maximize efficiency. To achieve the maximum efficiency possible by applying a light extraction structure to an OLED, the light extraction structure and the OLED structure must be viewed and optimized as a whole rather than individually. The team first combined the theory of describing the scattering phenomenon mathematically with the OLED emission prediction model to predict the characteristics of a number of devices with various structures in a short time, and based on this, they succeeded in predicting the optimal structure with maximum efficiency theoretically. The researchers have experimentally realized theoretically predicted optimal light scattering film and have succeeded in deriving 56% of external quantum efficiency and 221lm/W of power efficiency by combining it with the device structure using high-efficiency organic light emitting materials. This is the best result with OLED unit device efficiency realized without a large lens or internal light extraction structure. Professor Yoo said, "Various OLED light extraction efficiency enhancement technologies have been developed, but the possibility of practical use has not been high. This research has systematically presented the OLED implementation method corresponding to the efficiency of the high efficiency LED while utilizing the most meaningful technology in the commercialization." "This will contribute to the use of OLEDs in the light source for lighting or the sensor of the wearable device, where low power consumption is particularly important." This technology is expected to contribute to the popularization of OLED lighting and market growth. This research, which Ph.D. Candidate Song Jinouk participated as the first author, was published in the online edition of "Nature Communications" on August 10. This work was supported in part by the National Research Foundation (NRF) of Korea funded by the Ministry of Science and ICT, and in part by a research program “Technology Development of Low Cost Flexible Lighting Surface”, which is a part of the R&D program of Electronics and Telecommunications Research Institute (ETRI).   Paper: Lensfree OLEDs with over 50% external quantum efficiency via external scattering and horizontally oriented emitters Link: https://www.nature.com/articles/s41467-018-05671-x     [[{"fid":"6005","view_mode":"default","type":"media","attributes":{"height":"431","width":"530","class":"media-element file-default"}}]] OLED structure combined with external scattering layer
2018.08.16
The paper of Professor Kim Tag-Gon's group was selected as the 1st Annual Best Paper of the Year in the SIMULATION of the Society for Modeling and Simulation International (SCS). The selection was conducted among the best papers published in the journal in this year. The award ceremony will be held at the Spring Simulation Conference in April 2019. Congratulations.   Title: Data Modeling Versus Simulation Modeling in the Big Data Era: Case Study of a Greenhouse Control System. Author: Byeong Soo Kim, Bong Gu Kang, Seon Han Choi and Tag Gon Kim
2018.08.16
M.S Candidate Kim Seongyeon (Advisor: Lee Hyunjoo) was selected as a Geographic Finalist by the IEEE EMBS Society. He won the third place in the SPC(Student Paper Competition) which Geographic Finalists and Open Finalists are in competition. The IEEE EMBS (Society of Engineering in Medicine and Biology Society) is the world's largest society in the field of biomedical engineering. They select 5 geographic finalists and 10 open finalists, among which he was selected as geographic Finalists (Asia-Pacific).   Conference: 40th International Conference of the IEEE Engineering in Medicine and Biology Society Date: 2018.07.17-2018.07.21 Venue: Hawaii Convention Center Title: Improved Target Specificity of Transcranial Focused Ultrasound Stimulation (TFUS) using Double-Crossed Ultrasound Transducers Author: Seongyeon Kim, Hyunggug Kim, Chaeyun Shim, and Hyunjoo J. Lee*   [[{"fid":"6000","view_mode":"default","type":"media","attributes":{"height":"599","width":"900","class":"media-element file-default"}}]]

Notice

2018.09.03
We are looking for CES 2019 Las Vegas exhibition visitors to our undergraduate students. The Consumer Technology Association (CES) is known as "the largest consumer electronics exhibition on the planet." If you are interested in participating in the program, please refer to the image below and indivisually apply for it by 9:00 am September 6 (Thu).   Eligibility: EE undergraduate students in 3rd, 4th grade with exceptional curiosity and enthusiasm in the implementation / commercialization / commercialization of high-tech Support: Fully funded (airfare, accommodation, registration) Conditions: Team report and presentation Procedure 1. Application Form - Refer to the attachment - Due: 2018. 9. 6 (Thu) 09:00am - Submit to: shahn1028@kaist.ac.kr 2. Interview: Early in September 3. Announcement of successful applicants: Mid-September   [[{"fid":"6020","view_mode":"default","attributes":{"height":"1517","width":"848","class":"media-element file-default"},"type":"media"}]]
2018.08.07
This is an announcement for the Yunho Hwang, ILSOO and Minhwa Lee scholarship. Students who want to apply for the scholarship should complete the application form and submit it to the department office (042-350-3403,  parkhy@kaist.ac.kr) by 31st (Fri) August 2018. 1. Yunho Hwang Scholarship: Undergraduate students with outstanding academic achievement and undergraduate students in financial hardship    - Number of Offer: 2 students    - Amount of Scholarship: 500,000 KRW for each selected student 2. ILSOO Scholarship: MS/PhD students who are highly motivated in academics (Priority given to students in financial hardship)    - Number of Offer: 2 students    - Amount of Scholarship: 500,000 KRW for each selected student    3. Minhwa Lee Scholarship: Undergraduate/MS/PhD student with outstanding academic achievement and who is highly motivated in research (Priority given to students in financial hardship)    - Number of Offer: 1 student    - Amount of Scholarship: 500,000 KRW
2018.06.10
Professor Yung Yi and Ph.D. student Dae-Woo Kim have been selected as the University Donation program sponsored by Nokia Bell Labs. The program receives proposals for future research from researchers at universities around the world at Nokia Bell Labs. A small number of researchers are selected, and the researchers are allowed to freely use donation-type research fund. Professor Yung Yi and Ph.D. student Dae-Woo Kim proposed a study on "Multi-drone Platform for Machine Collective Intelligence" and received a donation of 50,000 euros. This study is about platform research that can combine IoT, Cloud, 5G communication and drones AI technology based on many drones. Because of the reputation of the world-class research institute, Bell Labs, and the nature of the donation-type research fund that does not require the submission of research results, it is significant in that it was selected for its high competition.

Event

2018.06.28
 2018 May 5th. Undergraduate Workshop
2018.06.28
2018 April 3rd. Strawberry Party
2018.06.28
2018 spring happy hour
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