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Vincenzo LaSalvia

Researcher III-Materials and Process Engineering

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Vincenzo LaSalvia is a photovoltaics researcher in the High Efficiency Monocrystalline Photovoltaics Group at NREL. He possesses a unique expertise in thermal and chemical processing of monocrystalline silicon wafers and solar cells. Through high-temperature experimentation, he has pioneered an investigation of crystal-defect generation and engineering in Czochralski-grown silicon. In collaboration with Arizona State University’s DEfECT Lab and the Massachusetts Institute of Technology’s Photovoltaics Research Laboratory, he has studied this phenomenon’s effect on photocarrier bulk lifetime throughout the entire solar cell process.

Vincenzo is also a key contributor at NREL in demonstrating the fabrication of a 21.5% efficient n-Cz silicon solar cell as well as the realization of a GaInP/Si dual-junction solar cell with 29.8% one-sun efficiency.


B.A., Physics, Cleveland State University

Featured Work

Tabula Rasa for n‐Cz Silicon‐Based PhotovoltaicsProgress in Photovoltaics (2019)

Effect of Crystallographic Orientation and Nanoscale Surface Morphology on Poly-Si/SiOx Contacts for Silicon Solar Cells, ACS Applied Materials & Interfaces (2019)

Oxygen Migration Enthalpy Likely Limits Oxide Precipitate Dissolution during Tabula Rasa, Applied Physics Letters (2017)

Photocarrier Bulk Lifetime with Defect Engineering of Polycrystalline Passivated-Contact n-Cz Photovoltaic Devices, IEEE 46th Photovoltaic Specialists Conference (2019)

Mitigating Process Induced Degradation in p- and n-Czochralski Silicon Wafers with Tabula Rasa, IEEE 46th Photovoltaic Specialists Conference (2019)

Self-Aligned, Selective Area Poly-Si/SiO2 Passivated Contacts for Enhanced Photocurrent in Front/Back Solar Cells, IEEE 46th Photovoltaic Specialists Conference (2019)

Critical Interface: Poly-silicon to Tunneling SiO2 for Passivated Contact Performance, AIP Conference Proceedings (2019)

Novel Rear Side Metallization Route for Si Solar Cells Using a Transparent Conducting Adhesive, IEEE 44th Photovoltaic Specialist Conference (2017)

Gallium-Doped Poly-Si:Ga/SiO2 Passivated Emitters to n-Cz Wafers With iVOC >730 mV, IEEE Journal of Photovoltaics (2017)

Realization of GaInP/Si Dual-Junction Solar Cells With 29.8% 1-Sun EfficiencyIEEE Journal of Photovoltaics (2016) 

View all NREL publications for Vincenzo LaSalvia.


Hydrogenation of Passivated Contacts, U.S. Patent No. US 9,911,873 B2 (2018)

Awards and Honors

President’s Award recipient for innovative research in the development of thermal processes in order to mitigate oxygen precipitation in Cz-Si for photovoltaic applications (2014)