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Start Over Author "Roel van de Krol" Journal advanced functional materials
5 results on '"Roel van de Krol"'

2. Carrier Localization on the Nanometer‐Scale limits Transport in Metal Oxide Photoabsorbers

Author

Markus Schleuning, Moritz Kölbach, Ibbi Ahmet, Raphael Präg, Ronen Gottesman, René Gunder, Mengyuan Zhang, Dan Ralf Wargulski, Daniel Abou‐Ras, Daniel A. Grave, Fatwa F. Abdi, Roel van de Krol, Klaus Schwarzburg, Rainer Eichberger, Dennis Friedrich, and Hannes Hempel

Subjects
Biomaterials, Electrochemistry, Condensed Matter Physics, Electronic, Optical and Magnetic Materials
Published
2023
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3. Sulfur Treatment Passivates Bulk Defects in Sb 2 Se 3 Photocathodes for Water Splitting

Author

Rajiv Ramanujam Prabhakar, Thomas Moehl, Dennis Friedrich, Marinus Kunst, Sudhanshu Shukla, Damilola Adeleye, Vinayaka H. Damle, Sebastian Siol, Wei Cui, Laxman Gouda, Jihye Suh, Yaakov R. Tischler, Roel van de Krol, and S. David Tilley

Subjects
Biomaterials, charge carrier dynamics, Sb2Se3, Physique [G04] [Physique, chimie, mathématiques & sciences de la terre], photoluminescence spectroscopy, low‐frequency Raman spectroscopy, water splitting, photocathode, photoelectrochemistry, TRMC, Physics [G04] [Physical, chemical, mathematical & earth Sciences], Electrochemistry, time‐resolved microwave conductivity, Condensed Matter Physics, Electronic, Optical and Magnetic Materials
Abstract

Sb2Se3 has emerged as an important photoelectrochemical PEC and photovoltaic PV material due to its rapid rise in photoconversion efficiencies. However, Sb2Se3 has a complex defect chemistry, which reduces the maximum photovoltage. Thus, it is important to understand these defects and develop defect passivation strategies in Sb2Se3. A comprehensive investigation of the charge carrier dynamics of Sb2Se3 and the influence of sulfur treatment on its optoelectronic properties is performed using time resolved microwave conductivity TRMC , photoluminescence PL spectroscopy, and low frequency Raman spectroscopy LFR . The key finding in this work is that upon sulfur treatment of Sb2Se3, the carrier lifetime is increased by the passivation of deep defects in Sb2Se3 in both the surface region and the bulk, which is evidenced by increased charge carrier lifetime of TRMC decay dynamics, increased radiative recombination efficiency, decreased deep defect level emission PL , and the emergence of new vibration modes by LFR

Published
2022
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4. Pure CuBi 2 O 4 Photoelectrodes with Increased Stability by Rapid Thermal Processing of Bi 2 O 3 /CuO Grown by Pulsed Laser Deposition

Author

Ronen Gottesman, Abdelkrim Chemseddine, Angang Song, Maximilian Krause, A. T. M. Nazmul Islam, Igal Levine, Roel van de Krol, Thomas Dittrich, and Daniel Abou-Ras

Subjects
Biomaterials, Materials science, business.industry, Rapid thermal processing, Electrochemistry, Optoelectronics, Condensed Matter Physics, business, Electronic, Optical and Magnetic Materials, Pulsed laser deposition
Published
2020
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5. Effect of Doping and Excitation Wavelength on Charge Carrier Dynamics in Hematite by Time‐Resolved Microwave and Terahertz Photoconductivity

Author

Daniel A. Grave, Asaf Kay, Mor Fiegenbaum‐Raz, Sönke Müller, Dennis Friedrich, Avner Rothschild, Roel van de Krol, Hen Dotan, Fatwa F. Abdi, and Rainer Eichberger

Subjects
Excitation wavelength, Materials science, business.industry, Terahertz radiation, Photoconductivity, Doping, Hematite, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Biomaterials, visual_art, Electrochemistry, visual_art.visual_art_medium, Optoelectronics, Charge carrier, Time-resolved spectroscopy, business, Microwave
Published
2019
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