Research Focus Areas: Electronic and Photonic Devices

The Nano-Optoelectronic Materials and Devices Laboratory focuses on developing high-performance nanophotonic devices using nanostructures and their applications in a variety of areas, including light-emitting diodes, laser diodes, solar cells, as well as in solar-fuel ce

Our research research expertises cover the epitaxial growth, device fabrication and characterization of III-V based self-organized nanostructure materials grown by molecular beam epitaxy. Our research topics are listed below:

  • Semiconductor nanostructures for nanoelectronics and optoelectronics
  • Epitaxial growth and characterization of III-nitride nanostructures
  • III-V based materials and devices
  • Light emitting diodes, laser diodes, photodetectors
  • Solar fuels, solar cells

Old News:

  • December 2016: Moab won the best presentation award at the 12th Annual Graduate Student Research Day from NJIT Graduate Student Association, 2016 for his presentation on “High Performance Phosphor-free InGaN/AlGaN Nanowire Light-Emitting Diodes”. Moab also received the teaching excellence award for Teaching Assistants in 2016. Congratulations, Moab! Keep fighting!

  • November 17, 2016: The group led by Mehrdad presented our research on "III-nitride Nanowire Optoelectronics and Their Applications" at the NJIT Research Showcase.

  • November 16, 2016: Prof. Nguyen delivered an invited plenary talk at the 13th China International Forum on Solid State Lighting, Beijing, China. His presentation was about "“III-Nitride Nanowire LEDs and Lasers: The Next Generation Lighting Technology”.

  • September 19, 2016: Moab presented his research on "Controlling Color Emission of InGaN/AlGaN Nanowire Light-Emitting Diodes Grown by Molecular Beam Epitaxy” at the 32nd North American Molecular Beam Epitaxy Conference, Saratoga Springs, New York, September 18-21, 2016. Prof. Nguyen served as a chair for section "Nitride Materials and Devices".

  • September 02, 2016: Rithvikkranti joined our group as a graduate student. His Master thesis title is:"Simulation and Design of High Performance III-Nitride Nanowire Heterostructures for Photonic Applications". Welcome on Board, Rith!

  • July 28, 2016: Our summer research undergraduate students presented their researches on nanowire LEDs and solar cells at the 2016 International Undergraduate Summer Research Symposium at NJIT. We are happy to have had Ashish, Nevin, Ryan, and Olaoluwa joining us this summer.

  • July 27, 2016: Prof. Nguyen delivered an invited presentation for the Optical Society of America Technical Group Webinar for his study on "III-Nitride Nanowire Light-Emitting Diodes Grown by Molecular Beam Epitaxy".

  • July 13, 2016: Prof. Nguyen presented an invited talk to the NSF Research Experiences for Undergraduates at NJIT. The presentation covered research on "Visible Light-Emitting Diodes: Materials, Fabrication and Applications".

  • June 10, 2016: Welcome Olaoluwa Akinnuoye to our research group under NSF REU program in: "Optics and photonics: Technologies, Systems, and Devices".Olaoluwa's research topic is: "Fabrication and Characterization of III-Nitride Nanowire Light-Emitting Diodes".




  • September 20, 2022: Ravi got a full-time job offer from Intel, California as 3D NAND Engineer! Ravi will defend his Ph.D. dissertation this Fall! Congratulations, Ravi!

  • June 04, 2022: Ravi started his graduate intern at Micron Technology Inc., Idaho! Congratulations, Ravi!

  • May 15, 2022: Dr. Nguyen is a Sub-committee Chair on Nanostructures of the Compound Semiconductor Week 2022 which will be held IN-PERSON, in Ann Arbor, Michigan from June 01 to June 03, 2022. The CSW is a combination of the International Symposium on Compound Semiconductors (ISCS) and International Conference on Indium Phosphide and Related Materials (IPRM). The Deadline for abstract submission is January 31. Submit your work to the CSW 2022 and hope to see you in June in Ann Arbor!

  • April 20, 2022: Ravi received the Outstanding Graduate Student Award from Newark College of Engineering! Congratulations, Ravi!

  • January 06, 2022: Victor will start his new adventure at KLA Corporation, Michigan in February 2022. Congrats, Victor!

  • November 30, 2021: Barsha successfully defended her Ph.D. dissertation. Barsha will join Intel in January 2022. Congratulations, Barsha! All the best with your new endeavor!

  • October 12, 2021: Andresa has been selected as the receipent of the 2021 IEEE Electron Devices Society Undergraduate Student Scholarship. Well done, Andresa and congratulations! Student Wins Scholarship for Helping Reduce Electron Leakage in Blue LEDs!!

  • June 15, 2021: Matthew and Aarush participated in our research group via Bergen County Technical High School Internship Program. Welcome, Matthew!

  • May 26, 2021: Shehab Ihsaam joined our group via the NSF REU in Optics and Photonics program. Shehab is current an undergraduate student at Rutger Univerity.

  • May 15, 2021: Ravi has been selected a receipent of the 2021 SPIE Optics and Photonics Education Scholarship! Great achievement! Congratulations, Ravi!


  • May 10, 2021: Andresa joined our research group as a Ronald E. McNair Postbaccalaureate Achievement Fellow. Welcome, Andresa!

  • April 15, 2021: Victor (Thang) successfully defended his final Ph.D. disseration defense. Congratulation, Victor!

  • January 6, 2021: Ravi's paper has been featured as one among 15 notable Fluorescent and Luminescent Materials papers from Optical Materials Express in 2020. Congrats, Ravi! This paper (Optical Materials Express, 10 (2020) 472) presents our study on AlInN nanowire based LEDs for new generation light-emitters.

  • September 1, 2020: Kanan joined our group as a Master student. Welcome aboard Kanan!

  • August 20, 2020: Thang's paper on "High Performance AlGaN Nanowire Ultraviolet Light-Emitting Diodes with Potassium Hydroxide and Ammonium Sulfide Surface Passivation", published in OSA Applied Optics has been selected as Editor's Pick. Congrats, Thang!

  • August 17, 2020: Our research on AlInN nanowire LEDs has been featured in Compound Semiconductor. Congrats, Ravi and Barsha!


  • August 16, 2020: Our collaborative research on "Deep red fluoride dots-in-nanoparticles for high color quality micro white light-emitting diodes" has been accepted for publication in OSA Optics Express. This work is in collaboration with Dr. Hoang Duy Nguyen in the Institute of Chemical Technology, Vietnam Academy of Science and Technology and Dr. Prezemyslaw Jacek Deren in the Optical Spectroscopy Department, W Trzebiatowski Institute of Low Temperature and Structural Research of the Polish Academy of Science. Congratulations to all, on this new publication!

  • August 10, 2020: Ravi's research on: "High Performance Electron Blocking Layer Free Deep Ultraviolet Light-Emitting Diodes Implementing a Strip-in-a-Barrier Structure" has been accepted for publication in OSA Optics Letters. Well done, Ravi! Congratulation!

  • August 06, 2020: Thang's study on :"High Performance AlGaN Nanowire Ultraviolet Light-Emitting Diodes with Potassium Hydroxide and Ammonium Sulfide Surface Passivation" has been accepted for publication in OSA Applied Optics. Congratulations, Thang!

  • July 07, 2020: Barsha's study on :"Enhanced Hole Transport in AlGaN Deep Ultraviolet Light-Emitting Diodes Using Double-Side Step Graded Superlattice Electron Blocking Layer" has been accepted for publication in OSA Journal of Optical Society of America B. Well done, Barsha! Congratulations!

  • July 07, 2020: Our collaborative paper on "A Novel β-Ga2O3 HEMT with fT of 166 GHz and X-band POUT of 2.91 W/mm", led by Dr. Lenka, has been accepted for publication in Wiley International Journal of Numerical Modelling: Electronic Networks, Devices and Fields.  Congratulations, Trupti and the whole team!

  • July 01, 2020: Daniel Song will start his Undergraduate Program at United States Military Academy, West Point this Fall. Congratulations, Daniel! We wish you all the best in your future endeavor!

  • June 24, 2020: Barsha's research on "Enhancing the light extraction efficiency of AlInN nanowire ultraviolet light-emitting diodes with photonic crystal structures" has been accepted for publication in OSA Optics Express. Congratulations, Barsha and the team!

  • June 11, 2020: The team led by Ravi received a grant from National Science Foundation Icorps Program for transforming our lab-made nanowire LEDs in to industry. Ravi is the entrepreneurial lead of this project, "Smart Light-Emitting Diodes for Micro-Displays", while Hieu is the technical lead. Dr. Azeez Bhavnagarwala is the industrial mentor of the team.

  • June 10, 2020: Our collaborative paper on "Optimization of Dynamic Source Resistance in β-Ga2O3 HEMT and its Effect on Electrical Characteristics", led by Dr. Lenka, has been accepted for publication in Journal of Electronic Materials. Congratulations, Trupti and the whole teams!

  • June 06, 2020: Oladimeji Sobanjo joined our research group as Undergraduate student researcher via the Ronald E. McNair Postbaccalaureate Achievement Program. Demiji will work in the design, fabrication and characterization of nanowire UV LEDs. Welcome aboard, Dimeji!

  • June 04, 2020: Moses Tumuna starts working for Northrop Grumman, an Aerospace and Defense Company, and Jeffrey Jube-Ibe works for Texas Instrument. We wish you all the best in your new endeavors!

  • May 29, 2020: Dr. Nguyen presented an invited seminar (Zoominar) on " III-Nitride Nanowire Light-Emitting Diodes on Silicon and Patterned Substrates" at the King Abdullah University of Science and Technology, co-hosted by the Western Saudi Arabia Chapter of IEEE Electron Device Society. Thanks Prof. Xiaohang Li for the invitation.

  • May 28, 2020: Dr. Nguyen got promoted to the rank of Associate Professor with Tenure.

  • May 23, 2020: Our collaborative paper on "Investigation of Current Collapse and Recovery Time due to Deep Level Defect Traps in β-Ga2O3 HEMT", led by Dr. Trupti, has been accepted for publication in Journal of Semiconductor. Congratulations, Trupti and the whole teams!

  • May 18, 2020: Our collaborative paper on "The Dawn of Ga2O3 HEMTs for High Power Electronics - A Review", led by Dr. Trupti, has been accepted for publication in Elsevier Materials Science in Semiconductor Processing. Congratulations, Trupti and the whole teams!

  • May 11-14, 2020: Dr. Nguyen served as a Local Arrangement Chair for the 2020 IEEE International Conference on High Performance Switching and Routing. Original plan would be held at NJIT. However, it became virtual conference.

  • May 11 - 15, 2020: Our group will be presenting three oral presentations at CLEO 2020, virtual web based conference this year! Ravi, Thang, and Barsha will give their talks on Tuesday May 12, Thursday May 14, and Friday May 15, respectively. Ravi will present his work on "High-Efficiency Ultraviolet Emission from AlInN/GaN Nanowires Grown by Molecular Beam Epitaxy (STu3P.4)". Thang will discuss his research about "Full-Color MicroLEDs for Display Technologies (ATh3I.4)". Barsha will present her study on "Electron Blocking Layer Free AlGaN Deep-Ultraviolet Light Emitting Diodes (AF1I.3)".

  • May 08, 2020: Ravi's research on "Improving carrier transport in AlGaN deep ultraviolet light-emitting diodes using a strip-in-a-barrier structure" has been accepted for publication in OSA Applied Optics. Congratulations, Ravi and the team!

  • May 01, 2020: Moulik Patel joins our team as a Master thesis student. Welcome aboard, Moulik!

  • April 03, 2020: Our collaborative research led by Prof. Trupti Lenka has been published in a book chapter entitled "RF Performance of Ultra-wide Bandgap HEMTs" has been published in Emerging Trends in Terahertz Solid State Physics and Devices, Springer. Congrats, Trupti and the team!

  • March 10, 2020: Barsha's paper has been featured in Compound Semiconductors with a title "Researchers Make Electron Blocking-Free Nanowires". Good job, Barsha!

  • February 13, 2020: Ravi's work on "Epitaxial Growth and Characterization of AlInN Based Core-Shell Nanowire Light Emitting Diodes Operating in the Ultraviolet Spectrum" has been published in Nature Scientific Reports! Congratualtions, Ravi and the team!

  • January 14, 2020: Ravi's research on "Numerical Investigation on the Device Performance of Electron Blocking Layer Free AlInN Nanowire Deep Ultraviolet Light-Emitting Diodes" has been published in OSA Optical Materials Express. Congratulations, Ravi and the team!

  • January 05, 2020: Barsha started her graduate research internship at Intel in California. Congratulations, Barsha!

  • January 03, 2020: Barsha's study on "High Performance Electron Blocking Layer Free InGaN/GaN Nanowire White-Light-Emitting Diodes" has been published in OSA Optics Express! Congratulations Barsha and the team!

  • https://www.osapublishing.org/oe/abstract.cfm?uri=oe-28-1-665

  • December 16, 2019: the group led by Prof. Nguyen received the prestigious Faculty Early Career Development (CAREER) award from National Science Foundation for developing high efficiency AlInN nanowire ultraviolet LEDs. This is a great honor and tremendous encouragement to our research group. Congratulations and thank you for all your great contributions, our group members including former and current members!

  • December 02, 2019: Barsha successfully passed her Ph.D. Proposal Defence. Congratulations, Barsha!

  • September 19, 2019: Moses Tumuna joint our research group as an Undergraduate student researcher, via the Ronald E. McNair Scholarship. Moses works on design and characterization of high efficiency UV LEDs.

  • September 9, 2019: Thang successfully passed his Ph.D. Proposal Defence. Congratulations, Thang!

  • May 21, 2019: Moab has been awarded The 2019 Hashimoto Prize for the best Ph.D. thesis Award at NJIT for his excellent work on " Wide Bandgap Nanostructures: Growth, Fabrication And Their Optoelectronic Device Applications". This is a great honor, not only for Moab, but also for our whole research group! Congratulations, Moab!

  • March 27, 2019: Moab successfully defended his Ph.D. dissertation. Congratulations Dr. Moab Rajan Philip. In April 2019, Moab will start his full-time jobEpitaxial Engineer’ at Lasertel Inc., subsidiary of Leonardo which is a global high-tech company for developing lasers for aerospace, defense, security, and medical industry. All the best with your new endeavor, Moab!

  • October 15, 2018: Jeffrey Jude joins our research group via his Ronald E. McNair Scholarship. Jeffrey works with Moab and Ravi on developing visible color LEDs and Laser diodes using nanowire structures.

  • October 8th, 2018: We welcome Kevin Pemberthy to join our research group via his New Jersey Governor’s STEM Scholarship. Kevin is a senior undegraduate student at NJIT who will mentor a group of 5 high school students in New Jersey to work on developing high performance ultraviolet nanowire LEDs and their applications.

  • September 20th, 2018: Moab's paper on "Enhanced Efficiency of Dye-Sensitized Solar Cells based on Polyol Synthesized Nickel-Zinc Oxide Composites" is accepted for publication in Journal of Electronic Materials. Congrats, Moab!

  • August 15th, 2018: We welcome our new PhD student, Velpula Ravi Teja. Ravi joins our group from Indian Instute of Technology.

  • July 10th, 2018: Moab's research on “Polyol Synthesis of Zinc Oxide-Graphene Composites: Enhanced Dye-Sensitized Solar Cell Efficiency”, is accepted for publication in Current Nanomaterials. Congrats, Moab and the team!

  • June 04th, 2018: The group welcomed summer students via the NSF REU program in: "Optics and photonics: Technologies, Systems, and Devices" and the 2018 High School Summer Research Intern at NJIT. They are Maria Ramirez (from University of Southern California) Anna Xia (from Livingston High School), Kedhar Narayan (from New Providence High School, NJ) and Aarush Raj (from Livingstong High School).

  • May 11, 2018: Moab received the pretigious 2018 SIPE scholarship in Optics and Photonics Education Awards for his potential contribution to the field of Optics, Photonics or a related field. Congratulations, Moab!

  • May 10, 2018: Thang successfully passed his Ph.D. qualifying exam. Congratulations, Thang!

  • March 15, 2018: Moab's research was highlighted in LED Professional, one of the most prestigious magazine in the field of Light-emitting devices. The title of the article is" Full-color InGaN/AlGaN nanowire LEDs for Solid-state lighting and displays", March 2018, issue 66 page 50. Congrats, Moab! Keep fighting on your work to produce high quality LEDs for lighting and flexible display!

  • March 2018: Prof. Nguyen has received Outstanding reviewer award from Optical Materials.

  • February 2018: Moab's study on UV-B nanowire LEDs grown by MBE has been published in Journal of Advanced Optics and Photonics. Congrats Moab and the team!

  • November 4, 2017: Moab and Thang presented our research at the 2017 Annual Meeting of the American Physics Society Mid-Atlantic Section, in Newark, New Jersey. Moab's talk was on Nanowire LEDs on Flexible Platform while Thang presented his work on Full-Color Nanowire LEDs grown by MBE.

  • October 25, 2017: Mehrdad's study on "Effects of Optical Absorption in Deep Ultraviolet Nanowire Light-Emitting Diodes”, has been accepted for publication in Photonics and Nanostructures - Fundamentals and Applications. Congratulations, Mehrdad!

  • October 15, 2017: Moab presented his research on "AlGaN/GaN UV-B Nanowire Light-Emitting Diodes Grown by Molecular Beam Epitaxy" at the 33rd North American Molecular Beam Epitaxy Conference, at Galveston Island, Texas.

  • October 1, 2017: Nasir started his full-time position at GLOBALFOUNDRIES in Ballston Spa, New York. Best wishes on your new adventure, Nasir!

  • August 28, 2017: We welcome a new group member, Thang Bui! Thang joins our team as a PhD student in Electrical Engineering. Thang received his degree of Master in Nanomaterials and Nanodevices from Vietnam National University - University of Engineering and Technology, Vietnam.

  • July 01, 2017: Prof. Nguyen presented an invited talk at the The 2017 EITA Conference on New Materials, Nanotechnology and New Energy at University of Michigan, Ann Arbor, Michigan. His talk is about "Phosphor-Free InGaN/AlGaN Core-Shell Nanowire Light-Emitting Diode Arrays on Si and Flexible Substrates".

  • June 2017: We welcome Summer Students joining our research group this summer on different fellowships. They are Ali Yuksel (NJIT), Mehmet Demirci (from Morristown High School, NJ), and Sena Yuksel (from Parsippany High School, NJ) for their 2017 Provost Summer Undergraduate Research Program at NJIT, Anumeena Sorna (National Institute of Technology Trichy, India) for the NSF REU program in: "Optics and photonics: Technologies, Systems, and Devices", Richarch Chen (North Hunterdon High School, NJ) for the 2017 High School Summer Research Intern at NJIT.

  • May 16, 2017: Four members of our group graduated this year and received their Degrees of Master and Bachelor of Engineering at the 2017 Commencement at NJIT. Congratulations Dip, Evo, Ashish, and Nevin! Commencement 2017 NJIT

  • May 10, 2017: Moab sucessfully defended his PhD thesis proposal. Well done, Moab.

  • April 26, 2017: Congrats Ashish John on his new fulltime job employment as Project management & Lighting Engineer at Hylan Datacom&Electric. Ashish has been working in our research group since summer 2015. All the bests with your new adventure, Ashish!

  • April 24, 2017: Dipayan has just successfully passed his Master's thesis defense. Congratulations, Dip!

  • April 19, 2017: Moab presented his research on visible nanowire LEDs at the Dana Knox Student Research Showcase at NJIT.

  • March 2017: Moab's paper was featured as Editor's pick in Journal of Vacuum Science and Technology B in March 2017. Moab's research on MBE growth of nanowire LEDs was highlighted in NJIT site: A Graduate Student's LED Research is the 'Editor's Pick' in a Prominent Engineering Journal . Congrats, Moab! Keep fighting! MOAB

  • January 2017: Dr. Nguyen leads a spectial issue on "Advanced Optoelectronic Materials and their Applications in Photonics and Energy Harvesting" for Advancies in OptoElectronics. All manuscripts related to the fields of nano-optoelectronic materials, including novel designs, synthesis, characterization and application of novel nanostructures for photonics and energy harvesting are welcome.