Conferences Presentations

2017

36. Green vertical-cavity surface-emitting laser from perovskite (CH(NH2)2PbBr3) thin films
Songtao Chen, Joonhee Lee, Arto Nurmikko
Conference on Lasers and Electro-Optics, May 15, 2017, San Jose Convention Center, San Jose, California, USA (oral)


2016

35. An all-carbon-based, transparent, flexible micro-electrocorticography device for large-scale optical and electrical access to brain circuits
Joonhee Lee, Nicolette Driscoll, Ilker Ozden, Zeyang Yu, Antti Kaskela, Esko Kauppinen, Arto Nurmikko
Annual Meeting of Society for Neuroscience, November 12-16, 2016, San Diego Convention Center, San Diego, California, USA (poster)


34. Hybrid perovskite vertical-cavity surface-emitting laser deploying nanoporous GaN dielectric reflector technology
Songtao Chen, Cheng Zhang, Joonhee Lee, Jung Han, Arto Nurmikko
Conference on Lasers and Electro-Optics, June 5-10, 2016, San Jose Convention Center, San Jose, California, USA (oral)


2015

33. Optoelectronic devices for optogenetics: From rodents to non-human primates
Joonhee Lee, Ilker Ozden, Yoon-kyu Song, Arto V. Nurmikko
IEEE Biomedical Circuits and Systems Conference (BioCAS), October 22, 2015, Academy of Medicine, Atlanta, Georgia, USA


32. Development of fully transparent micro-optoelectrode array for simultaneous optical, electrical interface to the brain and its applications
Joonhee Lee, Ilker Ozden, Yoon-kyu Song, Arto V. Nurmikko
Annual Meeting of Society for Neuroscience, October 20, 2015, McCormick Place, Chicago, Illinois, USA (Nanosymposium)


31. Optogenetic control of dopamine release in rodents and novel opto-dopamine probes for in vivo experiments
Yao Lu, Zeyang Yu, Nicolette Driscoll, Ilker Ozden, Joonhee Lee, Arto V. Nurmikko
Annual Meeting of Society for Neuroscicence, October 19, 2015, McCormick Place, Chicago, Illinois, USA (poster)


30. Multifunctional transparent optoelectrode array for in-vivo optogenetic studies
Joonhee Lee, Ilker Ozden, Yoon-kyu Song and Arto V. Nurmikko
Conference on Lasers and Electro-Optics, May 11, 2015, San Jose Convention Center, San Jose, California, USA (oral)


29. Optically pumped distributed feedback laser from organo-lead iodide perovskite thin films
Songtao Chen, Wee Kiang Chong, Joonhee Lee, Nripan Mathews, Tze Chien Sum, Kwangdong Roh and Arto V. Nurmikko
Conference on Lasers and Electro-Optics, May 11, 2015, San Jose Convention Center, San Jose, California, USA (oral)


2014

28. A transparent ZnO optoelectrode array for probing neural circuits through spatiotemporally controlled light delivery and simultaneous multisite electrophysiology
Joonhee Lee, Ilker Ozden, Yoon-kyu Song and Arto V. Nurmikko
Annual Meeting of Society for Neuroscicence, November 16, 2014, Walter E Washington Convention Center, Washington DC, USA (poster)


27. Colloidal II-VI compound quantum dot lasers: Spanning the red, green, and blue by single material
Arto V. Nurmikko, Kwangdong Roh, Joonhee Lee, Cuong H. Dang
Photonics West, February 3, 2014, The Moscone Center, San Francisco, California, USA (invited)


2013

26. Transparent micro-optoelectronic array for simultaneous spatiotemporal optical stimulation and electrical recording
Joonhee Lee, Ilker Ozden, Yoon-Kyu Song, and Arto V. Nurmikko
Annual Meeting of Society for Neuroscicence, November 13, 2013, San Diego Convention Center, San Diego, California, USA (poster)


25. Red, green, and blue colloidal quantum dot-based optically pumped distributed feedback lasers
Kwangdong Roh , Joonhee Lee, Cuong Dang, C. Breen, J. S. Steckel, S. Coe-Sullivan and Arto Nurmikko
IEEE Photonics Conference, September 8-12, 2013, Hyatt Regency Bellevue Bellevue, Washington DC, USA (invited)


24. Spatiotemporally patterned optical targeting and electrical recording from neural microcircuits in in-vivo animals
Ilker Ozden , Joonhee Lee, Yoon-Kyu Song, Arto V. Nurmikko
IEEE Photonics Conference, September 8-12, 2013, Hyatt Regency Bellevue, Bellevue, Washington DC, USA (invited)


23. Transparent micro-optrode arrays for simultaneous multichannel optical stimulation and electrical recording
Joonhee Lee, Yoon-Kyu Song, Ilker Ozden, and Arto Nurmikko
Conference on Lasers and Electro-Optics, June 13, 2013, San Jose Convention Center, San Jose, California, USA (invited)


22. High performance, spatially coherent, multicolor distributed feedback lasers in optically pumped colloidal quantum dots
Kwangdong Roh, Cuong H. Dang, Joonhee Lee, Sungmo Ahn, Heonsu Jeon, Craig Breen, Jonathan S. Steckel, Seth Coe-Sullivan, and Arto Nurmikko
Conference on Lasers and Electro-Optics, June 13, 2013, San Jose Convention Center, San Jose, California, USA (oral)


21. Transient gain spectroscopy in the potent single-exciton regime of dense II-VI colloidal quantum dot films
Cuong H. Dang, Kwangdong Roh, Joonhee Lee, Craig Breen, Jonathan S. Steckel, Seth Coe-Sullivan, and Arto Nurmikko
Conference on Lasers and Electro-Optics, June 10, 2013, San Jose Convention Center, San Jose, California, USA (oral)


2012

20. Stimulated emission in red, green, and blue from colloidal quantum dot films by single exciton optical gain
Cuong Dang, Kwangdong Roh, Joonhee Lee, Craig Breen, Jonathan S. Steckel, Seth Coe-Sullivan, and Arto Nurmikko
IEEE Photonics Conference, September 24, 2012, Hyatt Regency San Francisco Airport, Burlingame, California, USA (invited)


19. Red, green, and blue laser action in densely packed colloidal quantum dot films
Cuong Dang, Kwangdong Roh, Joonhee Lee, Craig Breen, Jonathan S. Steckel, Seth Coe-Sullivan and Arto Nurmikko
IEEE Nano; 12th International Conference on Nanotechnology, August 20-23, 2012, International Convention Centre, Birmingham, UK (oral)


18. Low threshold lasers from wavelength-engineered colloidal quantum dot enabled by single-exciton optical gain
Cuong Dang, Kwangdong Roh, Joonhee Lee, C. Breen, J. S. Steckel, S. Coe-Sullivan, and Arto Nurmikko
Lester Eastman Conference on High Performance Devices, August 7, 2012, Providence, Rhode Island, USA (oral)


2011

17. Electroluminescence from n-n isotype heterojunctions of graded-band-gap ZnMgO:Al and ZnO films
Jong-Gul Yoon, Sung Woo Cho, Woo Seok Choi, Dae Yeol Kim, Joonhee Lee, Chang Oh Kim, Hojoon Chang, Heonsu Jeon, Suk-Ho Choi, Tae Won Noh
American Physical Society March Meeting, March 22, 2011, Dallas, Texas, USA (oral)


16. Surface-grating-integrated GaN-based light-emitting-diodes for linearly polarized light emission
Dong-uk Kim, Hojun Chang, Joonhee Lee, Heonsu Jeon
International Conference on Nitride Semiconductors, July 13, 2011, the Scottish Exhibition and Conference Centre (SECC), Glasgow, UK (poster)


15. Wavelength engineered luminescent material incorporating colloidal quantum dot within a nanoporous gallium nitride matrix
Cuong Dang, Yu Zhang, Joonhee Lee, Jung Han, Arto Nurmikko, Craig Breen, Jonathan Steckel, Seth  Coe-Sullivan
Conference on Lasers and Electro-Optics, May 6, 2011, Baltimore Convention Center, Baltimore, Maryland, USA (oral)


2010

14. Polarization-dependent GaN surface grating reflector
Joonhee Lee, Hojun Chang, Sungmo Ahn, Dong-Uk Kim, and Heonsu Jeon
Meeting of Society of LED and Solid State Lighting, August 25~26, 2010, ERICA Campus Conference Hall, Hanyang University, Korea (oral)


13. Polarization-Dependent GaN Grating Reflector For Short Wavelength
Joonhee Lee, Sungmo Ahn, Hojun Chang, and Heonsu Jeon
Photonics West, January 27, 2010, The Moscone Convention Center, San Francisco, California, USA (poster)


2009

12. Polarization-Dependent GaN Grating Reflector
Joonhee Lee, Sungmo Ahn, Hojun Chang, and Heonsu Jeon
Asia Communications and Photonics Conference and Exhibition, November 4, 2009 Everbright Convention & Exhibition Center, Shanghai, China (oral)
Best Student Presentation Award (1st Place)


11. GaN-Based Grating Reflector For Short Wavelength Applications
Joonhee Lee, Jaehoon Kim, Dong-Uk Kim, and Heonsu Jeon
International Conference on Nitride Semiconductors, October 19, 2009, The International Convention Center, Jeju, Korea (poster)


10. 측벽 경사면과 광자결정이 집적된 고추출효율의 GaN 발광다이오드
Joonhee Lee, Sungmo Ahn, Sihan Kim, Dong-Uk Kim, Heonsu Jeon, Seung-Jae Lee, and Jong Hyeob Baek
Meeting of Society of LED and Solid State Lighting, October 15~16, 2009, Kimdaejung Convention Center, Gwang-Ju, Korea (oral)


9. High Efficiency GaN LED Integrated With Sidewall Deflectors And Photonic Crystal
Joonhee Lee, Sungmo Ahn, Sihan Kim, Dong-Uk Kim, and Heonsu Jeon
The Korean Physical Society, Spring Meeting, April 24, 2009, Daejeon Convention Center, Korea (poster)


2008

8. High Extraction Efficiency GaN Light-Emitting Diode With Photonic Crystal Patterns And Angled Sidewall Deflectors
Joonhee Lee, Dong-Uk Kim, Sihan Kim, Sungmo Ahn, and Heonsu Jeon
Conference on Lasers and Electro-Optics, May 8, 2008, San Jose Convention Center, San Jose, California, USA(poster)


7. GaN-Based Light-Emitting Diode Integrated With Photonic Crystal Patterns And Sidewall Deflectors For Improved Light Extraction
Joonhee Lee, Dong-Uk Kim, Sihan Kim, Sungmo Ahn, and Heonsu Jeon
Photonics West, January 23, 2008, San Jose Convention Center, San Jose, California, USA (oral)


2007

6. GaN-Based Light-Emitting Diode Integrated With Photonic Crystal Patterns And Sidewall Deflectors For Improved Light Extraction
Joonhee Lee, Dong-Uk Kim, Sihan Kim, Sungmo Ahn, and Heonsu Jeon
The Korean Physical Society, Fall Meeting, October 19, 2007, Jeju, Korea (oral)


5. GaN Light-Emitting Diodes Integrated With Monolithic Sidewall Deflectors For Enhanced Surface Emission
Jae-Soong Lee, Joonhee Lee, Sunghwan Kim, and Heonsu Jeon
Photonics West, January 24, 2007, San Jose Convention Center, San Jose, California, USA (oral)


2006

4. GaN-based light-emitting diodes with monolithically integrated sidewall deflectors for enhanced surface emission
Jae-Soong Lee, Joonhee Lee, Sunghwan Kim, and Heonsu Jeon
International Workshop on Nitride Semiconductors, October 24, 2006, Kyoto, Japan (poster)


3. GaN-based surface-emitting laser in folded-cavity scheme
Jae-Soong Lee, Joonhee Lee, and Heonsu Jeon
International Workshop on Nitride Semiconductors, October 24, 2006, Kyoto, Japan (poster)


2. GaN-based light-emitting diodes structure with monolithically integrated sidewall deflectors for enhanced surface emission
Jae-Soong Lee, Joonhee Lee, Sunghwan Kim, and Heonsu Jeon
International Workshop on Nitride Semiconductors, October 24, 2006, Kyoto, Japan (poster)


2005

1. Holographically generated square-lattice photonic crystal bandedge nanolaser array
Chi-O Cho, Jaewook Jeong, Joonhee Lee, and Heonsu Jeon
The 1st international workshop of NANO systems institute, May 30-31, 2005, Seoul, Korea