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Papers in 2019 – 2018

Journal Papers Published in 2019 – 2018

  1. J.-Y. Kim, Y.-H. Cho, H.-S. Park, J.-H. Ryou, and M.-K. Kwon, “Mass transfer of microscale light-emitting diodes to unusual substrates by spontaneously formed vertical tethers during chemical lift-off,” Appl. Sci. 9, 4243-1–8 (2019).
  2. J. Chen, H. Liu, W. Wang, N. Nabulsi, W. Zhao, J. Y. Kim, M.-K. Kwon, and J.-H. Ryou, “High durable, biocompatible and flexible piezoelectric pulse sensor using III-N thin film,” Adv. Funct. Mater. 29 (37), 1903162-1–10 (2019). [Featured back-cover article in issue 37 of volume 29 (September, 2019)]
  3. J. Chen, N. Nabulsi, W. Wang, J. Y. Kim, M.-K. Kwon, and J.-H. Ryou, “Output characteristics of thin-film flexible piezoelectric generators: A numerical and experimental investigations,” Appl. Energy 255, 113856-1–12 (2019).
  4. W. Wang, S. M. Lee, S. Pouladi, J. Chen, S. Shervin, S. Yoon, J. H. Yum, E. S. Larsen, C. W. Bielawski, B. Chatterjee, S. Choi, J. Oh, and J.-H. Ryou, “Polarization modulation effect of BeO on AlGaN/GaN high-electron-mobility transistors,” Appl. Phys. Lett. 115 (10), 103502-1–5 (2019). [Featured editor’s pick article in issue 10 of volume 115 (September, 2019)]
  5. Y. Li, S. Sun, Y. Gao, Y. Yao, E. Galstyan, P. Rudra, M. Rathi, P. Dutta, S. Pouladi, J.-H. Ryou, and V. Selvamanickam, “Significant texture improvement in single-crystalline-like materials on low-cost, flexible metal tapes through growth of a silver thin film,” J. Appl. Cryst. 52 (4), 898‒902 (2019).
  6. D. Khatiwada, M. Rathi, P. Dutta, S. Sicong, C. Favela, Y. Yao, Y. Li, S. Pouladi, J.-H. Ryou, and V. Selvamanickam, “Passivation studies on single junction GaAs thin film solar cells on flexible metal tapes for low cost photovoltaics,” ACS Appl. Energy Mater. 2 (5), 3114‒3119 (2019).
  7. S. Pouladi, M. Asadirad, S. K. Oh, S. Shervin, J. Chen, W. Wang, C.-N. Manh, R. Choi, J. Kim, D. Khatiwada, M. Rathi, P. Dutta, V. Selvamanickam, and J.-H. Ryou, “Effects of grain boundaries on conversion efficiencies of single-crystal-like GaAs thin-film solar cells directly deposited on flexible metal tapes,” Sol. Energy Mater. Sol. Cells 199, 122‒128 (2019).
  8. S. M. Lee, J. H. Yum, E. S. Larsen, S. Shervin, W. Wang, J.-H. Ryou, C. W. Bielawski, W. C. Lee, S. K. Kim, and J.-W. Oh, “Domain epitaxy of crystalline BeO films on GaN and ZnO substrates,” J. Am. Ceram. Soc. 102 (6), 3745‒3752 (2019).
  9. Z. Ren, Y. Lu, H.-H. Yao, H. Sun, C.-H. Liao, J. Dai, C. Chen, J.H. Ryou, J. X. Yan, J. Wang, J. Li, and X. Li, “III-nitride deep UV LED without electron blocking layer,” IEEE Photon. J. 11 (2), 8200511-1‒1 (2019).
  10. (Invited review paper) S. K Oh, J. S. Lundh, S. Shervin, B. Chatterjee, D. K. Lee, S. Choi, J. S. Kwak, and J.-H. Ryou, “Thermal management and characterization of high-power wide-bandgap semiconductor electronic and photonic devices in automotive applications,” J. Electron. Packaging 141, 020801-1‒17 (2019).
  11. Y. Li, Y. Gao, Y. Yao, S. Sun, D. Khatiwada, S. Pouladi, E. Galstyan, M. Rathi, P. Dutta, A. Lytvynchuk, J.-H. Ryou, and V. Selvamanickam, “Direct synthesis of biaxially textured nickel disilicide thin films by magnetron sputter deposition on low-cost metal tapes for flexible silicon devices,” Appl. Phys. Lett. 114 (8), 083502-1‒4 (2019).
  12. P. Dutta, M. Rathi, D. Khatiwada, S. Sun, Y. Yao, B. Yu, S. Reed, M. Kacharia, J. Martinez, A. Litvinchuk, X. Pasala, S. Pouladi, B. Eslami, J.-H. Ryou, H. Ghasemi, P. Ahrenkiel, S. M. Hubbard, and V. Selvamanickam, “Flexible GaAs solar cells on roll-to-roll processed epitaxial Ge films on metal foils: a route towards low-cost and high-performance III-V photovoltaics,” Energy Environ. Sci. 12, 756‒766 (2019).
  13. J. Chen, S. K. Oh, N. Nabulsi, H. Johnson, W. Wang, and J.-H. Ryou, “Biocompatible and sustainable power supply for self-powered wearable and implantable electronics using flexible III-nitride thin-film-based piezoelectric generator,” Nano Energy 57, 670‒679 (2019).
  14. S. Pouladi, M. Rathi, D. Khatiwada, M. Asadirad, S. K. Oh, P. Dutta, Y. Yao, Y. Gao, S. Sun, Y. Li, S. Shervin, K. H. Lee, V. Selvamanickam, and J.-H. Ryou, “High-efficiency flexible III-V thin-film photovoltaic solar cells based on single-crystal-like thin-film directly grown on metallic tapes,” Prog. Photovoltaics: Res. Appl. 27 (1), 30‒36 (2019). [Featured cover article in issue 1 of volume 27 (January, 2019)]
  15. S. M. Lee, Y. S. Jang, J. Jung, J. H. Yum, E. S. Larsen, C. W. Bielawski, W. Wang, J.-H. Ryou, H.-S. Kim, H.-T. Cha, and J.-W. Oh, “Atomic layer deposition of crystalline BeO on SiC,” Appl. Surf. Sci. 469, 634‒640 (2019).
  16. Y. Li, H. Guo, Y. Yao, P. Dutta, M. Rathi, N. Zheng, A. Khadimallah, Y. Gao, S. Sun, J.-H. Ryou, P. Ahrenkiel, and V. Selvamanickam, “Defect reduction by liquid phase epitaxy of germanium on single-crystalline-like germanium templates on flexible, low-cost metal substrates,” Cryst. Eng. Comm. 20 (41), 6573‒6579 (2018).
  17. H. Sun, D. Priante, J.-W. Min, C. Zhao, M. K. Shakfa, R. C. Subedi, Z. Ren, K.-H. Li, R. Lin, T. K. Ng, J.-H. Ryou, X. Zhang, B. S. Ooi, X. Li, “Graded-index separated confinement heterostructure AlGaN nanowires: Towards ultraviolet laser diodes implantation,” ACS Photon. 5 (8), 3305-3314 (2018).
  18. S. Singh, S. Shervin, H. Sun, M. Yarali, J. Chen, R. Lin, K.-H. Li, X. Li, J.–H. Ryou, and A. Mavrokefalos, “Using mosaicity to tune thermal transport in polycrystalline AlN thin films,” ACS Appl. Mater. Interfaces 10 (23), 20085-20094 (2018).
  19. T. K. Kim, M. U. Cho, S. K. Oh, K. J. Son, B. Chatterjee, J.-H. Ryou, S. Choi, and J. S. Kwak, “Improved light output power of 16×16 pixelated micro-LEDs for headlights by enhancing the reflectivity and coverage of the p-electrode,” Phys. Status Solidi A 215 (10), 1700571-1-5 (2018). [Featured cover article in issue 10 of volume 215 (May, 2018)]
  20. J. Chen, S. K. Oh, H. Zou, S. Shervin, W. Wang, S. Pouladi, Y. Zi, Z. L. Wang, and J.-H. Ryou, “High-output lead-free flexible piezoelectric generators based on GaN thin film,” ACS Appl. Mater. Interfaces 10 (15), 12839-12846 (2018).
  21. K. J. Son, T. K. Kim, Y.-J. Cha, S. K. Oh, S.-J. You, J.-H. Ryou, and J. S. Kwak, “Impact of electron flux on plasma damage-free sputtering of ultrathin indium-tin-oxide contact layer on p-GaN for InGaN/GaN light-emitting diodes,” Adv. Sci. 5 (2), 1700637-1-10 (2018).
  22. S. Shervin, S. K. Oh, H. J. Park, K.-H. Lee, M. Asadirad, S. H. Kim, J. Kim, S. Pouladi, S.-N. Lee, X. Li, J. S. Kwak, and J.-H. Ryou, “Flexible deep-ultraviolet light-emitting didoes for significant improvement of quantum efficiencies by external bending,” J. Phys. D: Appl. Phys. 51 (10), 105105-1-7 (2018).
  23. W. Lee, S. Muhammad, T. Kim, H. Kim, E. Lee, M. Jeong, S. Son, J.-H. Ryou, and W. S. Yoon, “New insight into Ni-rich layered structure for next-generation Li rechargeable batteries,” Adv. Energy Mater. 8 (4), 1701788-1-12 (2018). [Featured cover article in issue 4 of volume 8 (February, 2018)]
  24. S. Jeong, S. K. Oh, J.-H. Ryou, K.-S. Ahn, K. M. Song, and H. Kim, “Monolithic inorganic semiconductor heterojunction white light-emitting diodes,” ACS Appl. Mater. Interfaces 10 (4), 3761-3768 (2018).