As a fourth year Electrical Engineering PhD candidate, I’m highly interested in contributing to the field of alternative energy where I may make a lasting impact on our world. I honed my interest in solar energy in particular during my three summer undergraduate research programs at Caltech, Cornell, and Harvard as well as during my three-year long undergraduate research at UC Berkeley. After receiving my BS in Chemistry and BA in Applied Math from UC Berkeley, I joined Yale’s PhD program, where I have since earned both an MS and MPhil in Electrical Engineering.
During my undergrad, I investigated a number of fields including environmental chemistry, organic chemistry, materials science, surface science, and solar energy. In my graduate studies, I decided to hone in on solar cells, working to improve efficiency and lower cost. As part of my NASA Fellowship, I aim to integrate high-efficiency III-V onto low-cost Si for multijunction devices through both metamorphic and selective-area growth pathways for both terrestrial and space applications. I have grown cells by both molecular beam epitaxy and metal-organic vapor phase epitaxy and fabricated and characterized my own devices using cleanroom fabrication techniques and a wide variety of characterization tools including e-beam/thermal metal deposition, photolithography, wet/dry chemical etching, electron microscopy, IV testing, photoluminescence, hall measurements, nomarski microscopy, quantum efficiency and reflectance measurements, and irradiation testing. I am proficient in data anlysis using software such as Microsoft Office, Matlab, Igor, Origin, and ImageJ. As a result of my research at Yale, I set a record efficiency for metamorphic 1J GaAsP/GaP/Si solar cells. I have presented and published my research findings in numerous journals and conference, helping hone my oral and written communication skills.
- M. Vaisman, et al. “GaAsP solar cells on GaP/Si with low threading dislcoation density.” Applied Physics Letters 109, 032107 (2016).
- M. Vaisman, et al. “Direct-gap 2.1-2.2 eV AlInP solar cells on GaInAs/GaAs metamorphic buffers.” Journal of Photovoltaics 6 (2), 571 (2016).
- M. Vaisman, et al. “Effects of growth temperature and device structure on GaP solar cells grown by molecular beam epitaxy.” Applied Physics Letters 106, 063903 (2015).
- X. Li, B. Deng, X. Wang, S. Chen, M. Vaisman, et al., “Synthesis of thin-film black phosphorus on a flexible substrate.” 2D Materials 2 (3), 031002 (2015).
- T. Goh, J. S. Huang, B. Bartolome, M. Y Sfeir, M. Vaisman, et al. “Panchromatic polymer-polymer ternary solar cells enhanced by Forster resonance energy transfer and solvent vapor annealing.” Journal of Materials Chemistry A 3, 18611 (2015).
- S. Tomasulo, K. Nay Yaung, J. Faucher, M. Vaisman, M. L. Lee. “Metamorphic 2.1-2.2 eV InGaP solar cells on GaP substrates.” Applied Physics Letters 104, 173903 (2014).
- M. Vaisman, et al. “Record-Efficiency GaAsP Solar Cells Grown by MBE on GaP/Si.” North American Molecular Beam Epitaxy Conference (2016). (Oral)
- M. Vaisman, et al. “GaAsP/GaP/Si Single-Junction Solar Cells for III-V/Si Tandem Devices.” Photovoltaics Specialists Conference (2016). (Oral) *Finalist in Best Student Paper Award Competition
- M. Vaisman, et al. “Direct-gap 2.1-2.2 eV AlInP solar cells on GaInAs/GaAs metamorphic buffers.” Photovoltaic Specialists Conference (2015). (Oral) *Finalist in Best Student Paper Award Competition; invited to submit to Journal of Photovoltaics
- M. Vaisman, et al. “GaP solar cells grown by molecular beam epitaxy.” Electronic Materials Conference (2015). (Oral)
- M. Vaisman, et al. “Preparation of black phosphorus thin films for optoelectronics and electronics.” Center for Research on Interface Structures and Phenomena Open House (2014). (Poster)
- S. Tomasulo, K. Nay Yaung, J. Simon, M. Vaisman, M. L. Lee. “Wide-bandgap InGaP solar cells grown by MBE for 4-6 junction devices.” International Conference on Molecular Beam Epitaxy, Flagstaff, Arizona (2014). (Presented by S. Tomasulo)
- M. Vaisman, et al. “Conductance properties of single atomic layer exfoliated graphene near nanohole edges.” Leadership Alliance National Symposium, Hartford, Connecticut (2012). (Poster)
- M. Vaisman, et al. “Air effects on lead sulfide quantum dot solar cells.” Cornell Center for Materials Research REU Seminar Day, Ithaca, New York (2011). (Oral)
- M. Vaisman, J. D. Roberts. “Conformational analysis of the succinic dianion: determining the effects of water on gauche preferences.” Caltech Amgen Scholars/SURF Seminar Day, Pasadena, California (2010). (Oral)