Dr. Lewerenz’s research interests involve:  advancing photoelectrochemical solar cells that operate in the photovoltaic or photoelectrocatalytic mode; semiconductor materials science and directed development and optimization of light absorbers; surface analyses related to wet processing and in situ operation of semiconductors and metals including synchrotron radiation methods; and model experiments for analysis of surface chemistry and physics.  He is also interested in photoelectrochemistry in micro-to-zero-gravity environments, fundamental processes and water photolysis, and the development and analysis of hybrid enzyme-semiconductor structures for medical and (photo)electrocatalytic applications.

Dr. Lewerenz’s JCAP research relates to:  advancing photoelectrochemical solar cells that operate in the photovoltaic or photoelectrocatalytic mode; semiconductor materials science and directed development and optimization of light absorbers; surface analyses related to wet processing and in situ operation of semiconductors and metals including synchrotron radiation methods; and model experiments for analysis of surface chemistry and physics.

 

Recent Publications

Lichterman, M. F. et al. Direct Observation of the Energetics at a Semiconductor/Liquid Junction byOperando X-ray Photoelectron Spectroscopy. Energy Environ. Sci., 2015, DOI: 10.1039/C5EE01014D(2015).

Richter, M. H. et al. (Invited) Measurement of the Energy-Band Relations of Stabilized Si Photoanodes Using Operando Ambient Pressure X-ray Photoelectron Spectroscopy. ECS Transactions 66, 105-113,DOI: 10.1149/06606.0105ecst (2015).

Fountaine, K. T., Lewerenz, H. J. & Atwater, H. A. Interplay of light transmission and catalytic exchange current in photoelectrochemical systems. Applied Physics Letters 105, 3, DOI: 10.1063/1.4900612(2014).

May, M. M., Lewerenz, H. J. & Hannappel, T. Optical in Situ Study of InP(100) Surface Chemistry: Dissociative Adsorption of Water and Oxygen. Journal of Physical Chemistry C 118, 19032-19041, DOI: 10.1021/jp502955m (2014).