Principal Investigator

Dr. Aram Amassian

Dr. Amassian is a materials scientist and engineer who has co-authored more than 210 publications in peer-reviewed journals and has delivered over 130 invited and keynote lectures. His research is in the area of energy materials, with an emphasis on energy harvesting materials and devices, such as organic photovoltaics, metal halide perovskite photovoltaics, and colloidal quantum dot photovoltaics. His group investigates the solution processing of semiconductor materials using lab-scale and fab-scale methods and develops advanced in situ characterization methods to gain insight into the non-equilibrium solidification and phase transformation of materials from solution to solid. Dr. Amassian’s work has received >20,000 citations and an h-index of 73 (Google Scholar). He was named a Highly Cited Author on Web of Science in 2020 and was inducted as a member of the Royal Society of Chemistry. He was previously awarded the Career Development SABIC Chair for his pioneering work on solution-processed optoelectronic materials and is the recipient of the American Vacuum Society’s Electronic Materials Postdoctoral, the NSERC (Canada) Postgraduate and Postdoctoral Fellowships.

Dr. Amassian obtained his B.Eng. (2001) and Ph.D. (2006) in Engineering Physics from Polytech Montreal in Canada, and he completed a postdoctoral fellowship in Materials Science and Engineering at Cornell University with George Malliaras. Amassian was appointed Assistant Professor of Materials Science and Engineering in 2009 at the King Abdullah University of Science and Technology (KAUST), where he was one of 75 faculty at the founding of the university. He joined NCSU in 2018 as Associate Professor and was recently appointed Professor (2021).

He is a pioneer in advanced characterization during solution-processing of organic and hybrid semiconductor materials used in electronics and photovoltaics and is best known for introducing in situ x-ray and optical diagnostics during spin-coating and meniscus-guided processes, such as blade coating. His research now develops and utilizes robotics in combination with characterization and artificial intelligence to establish formulation-process-structure-property relationships in an organic, quantum dot, and metal-halide hybrid perovskite semiconductor materials and devices with a primary focus on stability, efficiency, and scalable and eco-friendly manufacturability. His work has been highly interdisciplinary and collaborative, at the intersection of materials science, chemistry, and physics, as well as material, chemical, electrical and industrial engineering. His publication and funding track records reflect the transdisciplinary, collaborative, and international DNA of his collaborations.

Dr. Amassian is the co-founder of AWOS Technologies and co-founder and Chief Technology Officer of Bay Nano Technologies, which was awarded the eGames Daugherty Endowment.


Postdoctoral Researchers

Dr. Mihir Chauhan

Dr. Chauhan obtained his Bachelor’s of Technology in Electrical Engineering from CHARUSAT in India and then attended Amity University in India for his Master’s of Technology in Solar and Alternative Energy, and his Ph.D. from Pandit Deendayal Energy University (PDEU) in India for Engineering Physics. During his Ph.D. degree in engineering physics from PDEU, his research was aimed at investigating optoelectronic properties of Organic and Perovskite solar cells. He also received the research scholarship and MSCA-ITN European Early-Stage Research Fellowship at the University of Bayreuth, Germany. During his stay at the University of Bayreuth, he investigated the optoelectronic properties of organic solar cells (OSCs) with the use of fullerene and non-fullerene acceptors through electrical and optical characterization. He also investigated for the first time the change in optical features of hybrid halide perovskite materials during film formation through in-situ simultaneous absorbance and photoluminescence spectroscopy.

In the Amassian group, his research work is to understand how changes in the conformation or structure of organic and hybrid semiconductors affect their optical and electrical properties using in-situ characterization. His research will also investigate photodegradation mechanisms in organic and perovskite solar cells.

Mihir enjoys traveling, cooking, and hiking.

Dr. Benjamin Lefler
Dr. Lefler received his B.S. degree with honors in Chemistry from the University of Delaware in 2015 and performed research in organometallic synthesis and characterization of redox-active solar absorbing molecules. He then earned a Secondary Science Education from Temple University (Philadelphia, PA). He received his Ph.D. in Materials Science and Engineering from Drexel University (Philadelphia, PA). His doctoral research focused on dynamic patterned properties in epitaxial perovskite oxide thin films and surface chemical passivation of halide perovskite films.
In the Amassian group, his research investigates the impact of ionic diffusion on the dynamics of film stresses and stability for metal halide perovskite photovoltaics.
Ben enjoys tennis, theater, and board games.

Dr. Jiantao Wang

Dr. Jiantao Wang received his Bachelor degree from Nankai University in 2017. He got his Ph.D. in Chemistry from The Hong Kong University of Science and Technology in 2021. His dissertation focused on precursor compositions, interfacial materials and device engineering for high-performance perovskite solar cells. After graduation, he did 14-month postdoc in Prof. Jinsong Huang’s group at UNC Chapel Hill researching stability of narrow-bandgap perovskite solar cells.

In the Amassian group, his research work is to develop highly efficient and stable perovskite solar cells and understand the formation mechanism of 2D/3D heterojunction combining advanced in-situ characterization techniques.

Jiantao enjoys swimming, hiking and body-building.

Graduate Students

Name Research
Darby Burns

M.S. Electrical Engineering (2022-present)
B.S., Rensselaer Polytechnic Institute

Darby enjoys traveling, finding new coffee shops, and cooking.



Kasra Darabi

Ph.D., Materials Science and Engineering (2017-present)
B.S., Sharif University of Technology

Kasra enjoys traveling, exercising, and cooking

In situ characterization and thin-film device optimization

Google Scholar | LinkedIn

Boyu Guo

Ph.D., Materials Science and Engineering (2017-present)
M.S., Cornell University
B.S., Purdue University

Boyu enjoys gaming, comics, and learning new languages

Perovskite Solar Cells, Stress in Perovskite Thin Films


Yuchen Liu

Ph.D. Materials Science and Engineering (2022-present)
M.S. Materials Science and Engineering (2019)

B.S. Chemical and Biomolecular Engineering (2015)

Yuchen enjoys playing video/board games with friends, reading, watching TV, and trying new cooking recipes and going to new restaurants

Cathodes for Li-batteries


Jake Mauthe

Ph.D., Materials Science and Engineering (2019-present)
B.S., NC State University

Jake enjoys metal and woodworking

Photostability of Organic Photovoltaics

Joe Spiconardi

Ph.D., Materials Science and Engineering (2022-Present)
B.S., SUNY New Paltz
Joe enjoys restaurants, listening to records, and biking
High-throughput study and characterization of doping in organic electronics and organometallic materials

Laine Taussig

Ph.D., Materials Science and Engineering (2018-present)
B.S., Clemson University

Laine enjoys exploring new restaurants and breweries, hiking in nearby parks, group fitness, and running clubs

Stimuli-responsive organic electronics for wearable electronic devices

Gaurab Thapa

Ph.D., Physics (2019-present)
B.S., Kathmandu University, Nepal

Gaurab enjoys hiking, climbing, traveling, playing guitar, watching movies, and making barbecue

Pinpointing the Origins of Morphological Degradation in Fullerene-free Organic Photovoltaics using STM/S


Tajah Trapier

B.S., Materials Science and Engineering (2018-2022)

Tajah enjoys watching anime, reading manga, and helping her Underwater Robotics club

Smart Windows and Electrochromic Devices


Tony Wang

Ph.D., Materials Science and Engineering (2017-present)
M.S., University of Rochester
B.S., Harbin University of Science and Technology

Tony enjoys watching football games, playing basketball, hiking, and checking local restaurants

Hybrid perovskite single-crystal related devices, Automated high-throughput micro-experimentation

Google Scholar

Nathan Woodward

Ph.D., Electrical Engineering (2019-present)
B.S., Southern Methodist University

Nathan enjoys baking, woodworking, and reading science fiction

Perovskite Solar Cell Fabrication and Automation


Undergraduate Students

Name Research


Alex Almaraz

B.S., Materials Science and Engineering (2018-2022)

Alex enjoys swimming, surfing, trail running, and socializing with friends

Organic electronics with an interest in biomaterials


Joseph Schroedl

B.S., Computer Engineering (2019-Present)

Joe enjoys DIY electronics, 3D printing, ham radio, and biking.

Chemical process automation using custom robotic platforms


Name Research


Taesoo Kim

Flexible devices utilizing a range of materials, the development of quantum dots for LEDs, and the formation and integration of perovskite materials into devices


Nilesh Barange

Thin Films, Solar cells, OLED, Photodetector, Materials Science, Infrared camera, Electronics system design, and Embedded Systems
Dr. Masoud Ghasemi


Masoud Ghasemi (2013-2021)

Hybrid perovskite solar cell fabrication and optimization

Hoang Dang

Perovskite material integration into devices and understanding the relationship between performance and material properties
Vikash Kumar (2019) Hybrid perovskite solar cell fabrication and optimization
Addison Callan (2020) Perovskite Quantum Dot synthesis and solar cell application
Connor Boyce (2020) Hardware and software design and implementation for organic additive manufacturing
Kevin Fitzgerald (2021) Hybrid perovskite single-crystal synthesis
Katherine Meinhold (2021) Indium tin oxide nanoparticle synthesis for Smart Window application

Tatiana Proksch


Additive manufacturing of mixed ionic and electronic conducting polymers for the purpose of rapidly-prototyped high-performance OECT devices

Google Scholar | LinkedIn | SciPolPack

Ethan Strubinger


Organic Small Molecule Thin Films for OFET Optimization

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Gail McColgan

B.S., NC State University


Biocidal Multifunctional Coatings for High Traffic Hospital Surfaces


Deepak Kumar Dubey



Highly Efficient and Stable Large-area Organic Photovoltaic Devices



Mahesh Shinde

Development of a large area slot-die coated electrochromic coatings and devices with fast switching based on nanostructured electrochromic layers for both conventional and plasmonic smart windows.