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1. J. Lee, W. Jung, B. Kim, C. Lim, J. Lim, J. Roh, "Enhanced performance of quantum dot light-emitting diodes using chlorine-doped ZnMgO electron transport layer", 14th International Conference on Electroluminescence and Optoelectronic Devices (ICEL), Kyoto, Japan (Nov. 2024).

2. J. Lee, S. Kwak, W. Jung, C. Lim, J. Lim, D.-H. Hwang, J. Roh, "High-resolution patterning of quantum dots by blending with a photo-crosslinkable hole transport layer polymer", The 24th International Meeting on Information Display (IMID), Jeju, Korea (Aug. 2024).

3. K. Lee, J. Oh, H. Cho, M. Kim, Y. Bae, W. Jung, J. Lim, H. Cho, J. Roh, "Porous Electrodes Fabricated by Colloidal Lithography and Their Application to Quantum Dot-Based Multifunctional Devices", The 24th International Meeting on Information Display (IMID), Jeju, Korea (Aug. 2024).

4. J. Oh, K. Lee, J. Jeong, Y. Bae, C. Lim, J. Lee, W. Jung, J. Lim, H. Cho, J. Roh, "Enhanced Outcoupling of Quantum Dot Light-Emitting Diodes by Adhearable Microlens Arrays", The 24th International Meeting on Information Display (IMID), Jeju, Korea (Aug. 2024).

5. Y. Bae, K. Yoon, J. Lee, K. Lee, J. Kim, J. Roh, "Investigating the origin of positive aging effects in quantum dot light-emitting diodes", The 24th International Meeting on Information Display (IMID), Jeju, Korea (Aug. 2024).

6. H. Roh, K. Lee, J. Lee, Y. Bae, C. Lim, J. Roh, "Improved Performance of All-Solution-Processed InP Quantum-Dot Light-Emitting Diodes based on an Inverted structure", The 24th International Meeting on Information Display (IMID), Jeju, Korea (Aug. 2024). Best Poster Award

7. M. Kim, H. Cho, J. Ha, J. Roh, "Bulk Mobility Extraction of β-Ga2O3 Thin Film Transistors using Comprehensive Depletion-Mode Model via Optimizing Effective Bulk Channel Thickness", The 24th International Meeting on Information Display (IMID), Jeju, Korea (Aug. 2024).

8. J. Lee, W. Jung, C. Lim, J. Lim, J. Roh, “Highly Efficient Quantum Dot Light-Emitting Diodes by Employing Chloride Passivation”, The 21st International Symposium on the Physics of Semiconductors and Applications (ISPSA), Jeju, Korea (Jun. 2024)

9. C. Lim, J. Lee, W. Jung, J. Lim, J. Roh, “Mitigating Metal Ion Diffusion to Enhance Stability of Quantum Dot Light-Emitting Diodes by Doping of PEDOT:PSS”, The 21st International Symposium on the Physics of Semiconductors and Applications (ISPSA), Jeju, Korea (Jun. 2024).

10. J. Lee, S. Kwak, W. Jung, C. Lim, J. Lim, D.-H. Hwang, J. Roh, “Direct Patterning of Colloidal Quantum Dots Through Blending with a Photo-Cross-Linkable Functional Polymers”, Materials Research Society (MRS) fall meeting, Boston, USA (Nov, 2023).

11. H. Cho, D. Cha, M. Yi, S. Lee, J. Roh, “Improving Synaptic Characteristics of Organic Field-Effect Transistors through UV Modification of High-Glass Transition Polymer Electrets”, The 25th Cross Straits Symposium on Energy and Environmental Science and Technology (CSS-EEST25), Fukuoka, Japan (Nov. 2023).

12. Y. Bae, M. Choi, J. Roh, “Utilizing a Charge Generation Junction to Enable Efficient Hole Injection in InP-based Quantum Dot Light-Emitting Diodes”, International Meeting on Information Display (IMID), Busan, Korea (Aug. 2023). Best Poster Award

13. J. Lee, W. Jung, C. Lim, J. Lim, J. Roh, “The Effects of Halide Compound Treatments on the Performance of Colloidal Quantum Dot Light-Emitting Diodes”, International Meeting on Information Display (IMID), Busan, Korea (Aug, 2023). 

14. M. Choi, Y. Bae, W. Jung, J. Lim, J. Roh, "Constructing an Exceptionally Thick Hole Transport Layer for Highly Stable Quantum Dot Light Emitting Diodes", International Meeting on Information Display (IMID), Busan, Korea (Aug. 2023).

15. J. Oh, H. Jo, H. Cho, B. Jeong, J. Roh, "Flexible Heterostructured Photodetectors Based on Colloidal Quantum Dots and Laser-Induced Graphene", International Meeting on Information Display (IMID), Busan, Korea (Aug. 2023).

16. K. Lee, J. Kim, J. Roh,."Improved Performance of Quantum Dot Light-Emitting Diodes with ZnO/ZnMgO Bilayered Electron Transport Layers by UV-Ozone Treatment", International Meeting on Information Display (IMID), Busan, Korea (Aug. 2023).

17. H. Jo, H. Cho, M. Kim, S. Bak, D. Cha, M. Yi, S. Lee, J. Roh, "Synaptic Characteristics of Organic Field-Effect-Transistors with a Polymer Charge Trap Layer for Neuromorphic Applications",International Meeting on Information Display (IMID), Busan, Korea (Aug. 2023).

18. Y. Bae, J. Lee, J. Roh, “Improved performance of InP-based quantum dot light-emitting diodes by employing a cascading hole injection/transport layer”, IEEE Electron Devices Technology & Manufacturing Conference (EDTM), Seoul, Korea (Mar. 2023). Best Poster Award

19. K. Lee, J. Lee, J. Kim, J. Roh, “Enhanced efficiency roll-off characteristics in quantum dot light-emitting diodes by engineering interface of bilayer electron transport layers”, IEEE Electron Devices Technology & Manufacturing Conference (EDTM), Seoul, Korea (Mar. 2023).

20. M. Choi, W. Jung, J. Lee, J. Lim, J. Roh, “Amine-Functionalized Ligand as a Charge Balancer in Colloidal Quantum DotLight Emitting Diodes”, International Meeting on Information Display (IMID), Busan, Korea (Aug, 2022). 

21. H. Jo, J. Roh, “Analysis on Contact Resistance in n-Type Organic Field-Effect Transistors”, International Meeting on Information Display (IMID), Busan, Korea (Aug, 2022). 

22. J. Lee, W. Jung, M. Choi, S. Park, J. Lim, J. Roh, “Study on Solvent Orthogonality of the Double Hole Transport Layers in All Solution-Processed Quantum Dot Light-Emitting Diodes”, International Meeting on Information Display (IMID), Busan, Korea (Aug, 2022). 

23. S. Park, W. Jung, J. Lee, J. Lim, J. Roh, “Hole Injection Layer-Free Colloidal Quantum Dot Light-Emitting Diodes Fabricated on the Chemically Modified ITO Electrode”, International Meeting on Information Display (IMID), Busan, Korea (Aug, 2022). 

24. J. Roh, Y.-S. Park, J. Lim, V. Klimov, “Dual-functional colloidal quantum dot light-emitting diodes as a device platform for realizing solution-processable laser diodes”, SPIE OPTO, San Francisco, USA (Feb, 2022). Invited talk

25. J. Roh, Y.-S. Park, J. Lim, V. Klimov, “LED-like multilayered distributed feedback lasers based on colloidal quantum dots”, International Conference on Display Technology (ICDT), Wuhan, China (Oct, 2020). Invited talk

26. J. Roh, Y.-S. Park, J. Lim, V. Klimov, “Colloidal quantum dot light-emitting diodes with an integrated optical cavity toward solution processable laser diodes”, International Meeting on Information Display (IMID), Seoul, Korea (Aug, 2020). Invited talk

27. J. Roh, H. J. Yun, V. Klimov, “High ON-current vertical field-effect transistors based on environmentally-benign quantum dots”, Materials Research Society (MRS) spring meeting, phoenix, USA (Apr, 2018). 

28. J. Roh, Y.-S. Park, J. Lim, V. Klimov, “Low-threshold optically pumped lasing in LED-like stacks based on colloidal quantum dots”, Materials Research Society (MRS) spring meeting, phoenix, USA (Apr, 2018). 

29. J. Roh, H. J. Yun, V. Klimov, “High ON-current vertical quantum dot transistors as a novel platform for flexible and wearable electronics”, Materials Research Society (MRS) fall meeting, Boston, USA (Nov, 2018). 

30. J. Roh, H. J. Yun, V. I. Klimov, “High ON-current quantum dot transistors employing a vertical architecture”, Conference on Excited State Processes in Electronic and Bio Nanomaterials, Santa Fe, USA (Jun, 2018). Best Poster Presentation Award

31. J. Roh, J. Lim, Y.-S. Park, and V. I. Klimov, “Nano-patterning by interferometric lithography for optoelectronic devices”, Center for Advanced Solar Photophysics (CASP) workshop, Los Alamos, USA (Jul, 2017)

32. J. Roh, J. Song, J. Kim, and C. Lee, “Investigating light-induced degradation of amorphous polymers by employing transistor structure”, International Conference of Synthetic Metal (ICSM), Guangzhou, China (Jun, 2016).

33. J. Roh, I.-T. Cho, J.-H. Lee, S. H. Jin, and C. Lee, “Bias-stress-induced instability of multilayer molybdenum disulfide field-effect transistors”, Materials Research Society (MRS) spring meeting, Phoenix, USA (Mar, 2016).

34. J. Roh, H. Kim, and C. Lee, “Surface modification effect of SiO2 dielectric on operational stability using buffer layer with various polarity in organic thin film transistors”, International Conference on Advanced Electromaterials (ICAE), Jeju, Korea (Nov, 2015).

35. J. Roh, I.-T. Cho, H. Shin, B. H. Hong, J.-Ho Lee, S. H. Jin, and C. Lee, “Highly stable hysteresis-free molybdenum disulfide field-effect transistors”, International Meeting on Information Display (IMID), Daegu, Korea (Aug, 2015). Selected as an IMID 2015 awardee for KIDS awards gold (1st prize)

36. J. Roh, H. Kim, H. Shin, H. Roh, J. Kwak, B. J. Jung, and C. Lee, “Effect of alkyl chain length of self-assembled monolayer on bias stability of organic thin film transistors”, International Symposium on Flexible Organic Electronics (ISFOE), Thessaloniki, Greece (Jul, 2015).

37. J. Roh, C.-m. Kang, H. Shin, J. Kwak, B. J. Jung, and C. Lee, “Semiconductor-insulator interface engineering using self-assembled monolayer for organic field-effect transistors”, International Meeting on Information Display (IMID), Daegu, Korea (Aug, 2014).

38. J. Roh, C.-m. Kang, H. Shin, J. Kwak, B. J. Jung, and C. Lee, “Semiconductor-dielectric interface engineering for organic transistors using self-assembled monolayer”, UK-KOREA Workshop on Plastic Electronics, Seoul, Korea (Jul, 2014). 

39. J. Roh, C.-mo Kang, H. Shin, J. Kwak, B. J. Jung, and C. Lee, “n-type organic thin film transistors with high operational stability”, Society for Information Display (SID) Display Week, San Diego, USA, (Jun, 2014).

40. J. Roh, J. Lee, C.-m. Kang, B. J. Jung, and C. Lee, “Improved electrical performance and operational stability through interface engineering for organic thin film transistors”, German-Korean Polymer Symposium, Hamburg, Germany (Aug, 2013). Invited talk

41. J. Roh, C.-m. Kang, H. Shin, J. Kwak, B. J. Jung, and C. Lee, “The effect of surface polarity of gate dielectric buffer layer on operational stability in organic thin film transistors”, Society for Information Display (SID) Display Week, Vancouver, Canada (May, 2013).

42. J. Roh, C.-m. Kang, J. Kwak, B. J. Jung, and C. Lee, “Improved electrical performance and operational stability of organic thin film transistors by modifying insulator surface using low-k polymers”, Materials Research Society (MRS) fall meeting, Boston, USA (Nov, 2012).

43. J. Roh, C.-m. Kang, J. Kwak, B. J. Jung, and C. Lee, “Pentacene thin film transistors on fluorinated self-assembled monolayer-treated gate insulator and their gate bias stress effect”, International workshop on flexible and printable electronics (IWFPE), Muju, Korea (Nov, 2012)

44. J. Roh, M. Park, C.-m. Kang, H. Cho, and C. Lee, “Enhanced performance of all-solution-processed n-type organic thin film transistor by employing self-assembled monolayer”, International Meeting on Information Display (IMID), Goyang, Korea (Oct, 2011).