신소재공학과

Seminar

Date 20170328 

Regular Seminar Announcement



■ Title: Self-healing phosphor: New paradigm for high-power LED lighting

                      
■ Speaker: Prof. Lim Won Bin (Jeonnam National University)

 

■ Date and time: 28th of March (Tue) 16:00

 

■ Venue: KAIST Applied Engineering B/D(W1), Multimedia Lecture Hall (1st Floor)

  

 Abstract: Phosphor-converted white light-emitting diodes (pc-WLEDs) are the efficient light source that has multifarious applications in lighting, high-tech displays, and electronic devices. One of the biggest challenge of pc-WLEDs are the thermal quenching, in which phosphor suffers from emission loss with increasing temperature during high-power LED operation and is an inevitable drawback for any existing phosphor. Here we report for the first time, a new blue-emitting phosphor that doesn’t exhibit thermal quenching revealing zero-emission loss even upto 250ºC. This phenomena of non-thermal quenching, denoted as self-healing phosphor, portrays the ability of phosphor in resurrecting the emission loss and sustaining the luminescence with increasing temperature. This finding would initiate the exploration of many self-healing phosphors with non-thermal quenching for high-power LED applications.

No. Subject Author Date Views
Notice 2017 The Fall Semester Seminar ADMINI 2017.09.08 2297
247 2015 The Fall Semester Seminar file TeamLeader 2015.03.04 18860
246 2/25 (월) 홍승범박사 (Argonne National Laboratory) Administrator 2013.02.06 17809
245 [공지] 2011년 가을학기 신소재공학과 정기세미나 안내 file Administrator 2011.11.04 15222
244 3/20 (화) 정우철 박사 (California Institute of Technology) file Administrator 2012.03.15 15185
243 [공지] 2012년 봄학기 신소재공학과 정기세미나 안내 file Administrator 2012.02.13 14326
242 5/15 (화) 조문호 교수 (연세대학교 신소재공학과) Administrator 2012.05.09 13864
241 9/6 (화) 남윤성 교수 (KAIST 신소재공학과) file Administrator 2011.11.04 13711
240 [WCU-FS 사업단 세미나] 6/7 (화) 조정대 박사 (한국기계연구원) Administrator 2011.11.04 13445
239 10/19 (수) Dr. Miso Kim (MIT) Administrator 2011.11.04 11711
238 10/16 (화) 유현용 교수 (고려대학교 전기전자전파공학부) Administrator 2012.10.12 11509
237 3/19 (화) 신병하 박사 (IBM T.J. Watson Research Center) Administrator 2013.03.19 11354
236 10/18 (화) 이윤정 교수 (한양대학교 WCU, 에너지공학과) file Administrator 2011.11.04 11262
235 10/11 (화) 조성준 교수 (전남대학교 응용화학공학부 file Administrator 2011.11.04 11228
234 11/1 (화) 윤명한 교수 (광주과학기술원 신소재공학부) file Administrator 2011.11.04 11169
233 11/15 (화) 김진웅 교수 (한양대학교 응용화학과) file Administrator 2011.12.05 11155
232 3/5 (화) 정우철 교수 (KAIST 신소재공학과) Administrator 2013.03.05 11119
231 2/14 (화) 신종화 교수 (KAIST 신소재공학과) file Administrator 2012.02.15 10962
230 12/13 (화) Prof. Aloysius Soon (연세대학교 신소재공학과) file Administrator 2011.12.07 10638
229 [WCU-FS 사업단 세미나] 6/29 (수) 16:00 Prof. Digby D. Macdonald (Pennsylvania State University) Administrator 2011.11.04 10397
228 4/19 (화) 남기태 교수 (서울대학교 재료공학부) Administrator 2011.11.04 10323