Personal Profile

Aaron Ptak joined NREL in 2001 and has since worked on the growth and characterization of various materials and devices, including dilute nitrides and dilute bismides, coincident-site lattice matched alloys, and other novel materials for photovoltaic applications.  He currently leads an effort to drastically reduce the cost of high-efficiency III-V solar cells, focused on the use of hydride vapor phase epitaxy to enable the use of highly efficient III-V materials in one-sun and low-concentration applications. Ptak has authored or co-authored more than 125 papers and 2 book chapters, given more than 100 invited and contributed presentations, and been awarded 6 patents. 

Research Interests

Growth kinetics

New materials

Low-cost III-V deposition techniques

Photovoltaic materials and devices. 


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Collaborations and Top Research Areas From the Past 5 Years

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