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Publications

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Poly-Silicon Passivating Contacts for Silicon Solar Cells: Interface Passivation and Carrier Transport Mechanism
Article Year: 2019 DOI:https://doi.org/10.1021/acsaem.8b02149
Authors: Wenzhu Liu, Xinbo Yang, Jingxuan Kang, Shuai Li, Lujia Xu, Song Zhang, Hang Xu, Jun Peng, Feng Xie, Jui-Han Fu, Kai Wang, Jiang Liu, Areej Alzahrani, Stefaan De Wolf
  • silicon solar cell
  • tunnel oxide passivating contacts
  • subnanometer pits pinholes
  • unpin Fermi level
Dip Coating Passivation of Crystalline Silicon by Lewis Acids
Article Year: 2019 DOI:https://doi.org/10.1021/acsnano.9b01038
Authors: Wenbo Ji, Yingbo Zhao, Hossain M. Fahad, James Bullock, Thomas G Allen, Der-Hsien Lien, Stefaan De Wolf, Ali Javey
  • charge transfer
  • crystalline silicon
  • Lewis acids
  • Nafion
  • room-temperature passivation
Defect and Contact Passivation for Perovskite Solar Cells
Review Year: 2019 DOI:https://doi.org/10.1002/adma.201900428
Authors: Erkan Aydin, Michaele De Bastiani, Stefaan De Wolf
A comprehensive review on the passivation routes for perovskite solar cells toward the Shockley–Queisser limit.
  • contacts
  • hysteresis
  • passivation
  • Perovskite
  • recombination
  • solar cell
  • stability
Mitigating Plasmonic Absorption Losses at Rear Electrodes in High‐Efficiency Silicon Solar Cells Using Dopant‐Free Contact Stacks
Full Paper Year: 2019 DOI:https://doi.org/10.1002/adfm.201907840
Authors: Sihua Zhong, Julie Dreon, Quentin Jeangros, Erkan Aydin, Stefaan De Wolf, Fan Fu, Mathieu Boccard, Christophe Ballif
  • carrier-selective contact
  • c-Si solar cells
  • dopant-free contacts
  • plasmonic absoprtion
  • ZnO
Enhancing the charge extraction and stability of perovskite solar cells using strontium titanate (SrTiO3) electron transport layer
Article Year: 2019 DOI:https://doi.org/10.1021/acsaem.9b01567
Authors: Marios Neophytou, Michele De Bastiani, Nicola Gasparini, Erkan Aydin, Esma Ugur, Akmaral Seitkhan, Floriana Moruzzi, Yasmin Choaie, Alexandra J Ramadan, Joel Troughton, Rawad Hallani, Achilleas Savva, Leonidas Tsetseris, Sahika Inal, Derya Baran, Frédéric Laquai, Thomas D. Anthopoulos, Henry J. Snaith, Stefaan De Wolf, Iain McCulloch
  • electron-selective contact
  • strontium titanate
  • perovskite solar cells
Multi-cation Synergy Suppresses Phase Segregation in Mixed-Halide Perovskites
Article Year: 2019 DOI:https://doi.org/10.1016/j.joule.2019.05.016
Authors: Hoang Dang, Kai Wang, Masould Ghasemi, Ming-Chung Tang, Michele De Bastiani, Erkan Aydin, Emilie Dauzon, Dounya Barrit, Jun Peng, Detlef-M. Smigies, Stefaan De Wolf, Aram Amassian
  • hybrid perovskites
  • Solar cells
  • in situ characterization
  • phase transformation
  • phase segregation
Triarylphosphine Oxide as Cathode Interfacial Material for Inverted Perovskite Solar Cells
Article Year: 2019 DOI:https://doi.org/10.1002/admi.201900434
Authors: Kai Wang, Marios Neophytou, Erkan Aydin, Mingcong Wang, Thomas Laurent, George T. Harrison, Jiang Liu, Wenzhu Liu, Michele De Bastiani, Jafar I.Khan, Thomas D. Anthopoulos, Frédéric Laquai, Stefaan De Wolf
  • cathode interlayer interface engineering
  • organic molecule
  • p-i-n perovskite solar cell
  • semitransparent solar cell
Visualization of Charge Carrier Trapping in Silicon at the Atomic Surface Level Using Four-Dimensional Electron Imaging
Letter Year: 2019 DOI:https://doi.org/10.1021/acs.jpclett.9b00598
Authors: Basamat S. Shaheen, Ahmed M. El-Zohry, Jun Yin, Michele De Bastiani, Stefaan De Wolf, Osman M. Bakr, Omar F. Mohammed
  • silicon
  • 4D microscopy
Field Performance versus Standard Test Condition Efficiency of Tandem Solar Cells and the Singular Case of Perovskites/Silicon Devices
Year: 2018 DOI:https://doi.org/10.1021/acs.jpclett.7b02277
Authors: Olivier Dupré, Björn Niesen, Stefaan De Wolf, Christophe Ballif
  • tandem solar cells
  • Field Performance
  • Perovskites/Silicon Devices
Toward Annealing‐Stable Molybdenum‐Oxide‐Based Hole‐Selective Contacts For Silicon Photovoltaics
Year: 2018 DOI:https://doi.org/10.1002/solr.201700227
Authors: Stephanie Essig, Julie Dréon, Esteban Rucavado, Mathias Mews, Takashi Koida, Mathieu Boccard, Jérémie Werner, Jonas Geissbühler, Philipp Loper, Monica Morales-Masis, Lars Korte, Stefaan De Wolf, Christophe Ballif
  • heterojunctions
  • hydrogen
  • metal oxide
  • silicon solar cell
Hole-Collection Mechanism in Passivating Metal-Oxide Contacts on Si Solar Cells: Insights From Numerical Simulations
Year: 2018 DOI:10.1109/JPHOTOV.2018.2796131
Authors: Ramachandran Ammapet Vijayan, Stephanie Essig, Stefaan De Wolf, Bairava Ganesh Ramanathan, Philipp Loper, Christophe Ballif, Muthubalan Varadharajaperumal
  • Hole collection
  • Passivated Contact
  • silicon heterojunction (SHJ)
  • Solar cells
  • simulation
  • transition metal oxides
Interfacial Dynamics and Contact Passivation in Perovskite Solar Cells
Article Year: 2018 DOI:https://doi.org/10.1002/aelm.201800500
Authors: Michele De Bastiani, Erkan Aydin, Thomas G Allen, Daniel Walter, Andreas Fell, Jun Peng, Nicola Gasparini, Derya Baran, Klaus Weber, Thomas P.White, Stefaan De Wolf, Joel Troughton
  • contacts passivation
  • hysteresis
  • ion migrations
  • Perovskite
  • Solar cells
Tantalum Nitride Electron Selective Contact for Crystalline Silicon Solar Cells
Article Year: 2018 DOI:https://doi.org/10.1002/aenm.201800608
Authors: Xinbo Yang, Erkan Aydin, Hang Xu, Jingxuan Kang, Mohamed Hedhili, Wenzhu Liu, Yimao Wan, Jun Peng, Christian Samundsett, Andres Cuevas, Stefaan De Wolf
​​With this study, for the first time in literature Tantalum Nitride has been used as passivating contact on silicon solar cells.
  • hole blocking
  • Passivating contact
  • silicon solar cell
  • tantalum nitride
Improved Optics in Monolithic Perovskite/Silicon Tandem Solar Cells with a Nanocrystalline Silicon Recombination Junction
Year: 2018 DOI:https://doi.org/10.1002/aenm.201701609
Authors: Florent Sahli, Brett A Kamino, Jeremie Werner, Matthias Bräuninger, Bertrand Paviet-Salomon, Loris Barraud, Raphaël Monnard, Johannes Peter Seif, Andrea Tomasi, Quentin Jeangros, Aïcha Hessler‐Wyser, Stefaan De Wolf, Matthieu Despeisse, Sylvain Nicolay, B
  • microcrystalline
  • multijunction
  • organic-inorganic perovskite
  • silicon heterojunction (SHJ)
  • Tunnel junction
A Universal Double-Side Passivation for High Open-Circuit Voltage in Perovskite Solar Cells: Role of Carbonyl Groups in Poly(methyl methacrylate)
Year: 2018 DOI:https://doi.org/10.1002/aenm.201801208
Authors: Jun Peng, Jafar I.Khan, Wenzhu Liu, Esma Uğur, The Duong, Yiliang Wu, Heping Shen, Kai Wang, Hoang Dang, Erkan Aydin, Xinbo Yang, Yimao Wan, Klaus Weber, Kylie R. Catchpole, Frédéric Laquai, Stefaan De Wolf, Thomas P.White
Thanks to PMMA: PCBM Double-side passivation, very high‐efficiency (≈20.8%) perovskite cells with some of the highest open circuit voltages (1.22 V) reported for the same 1.6 eV bandgap are demonstrated.
  • carbonyl group
  • nonradiative recombination
  • passivation
  • perovskite solar cells
  • undercoordinated Pb atoms
Amorphous gallium oxide grown by low-temperature PECVD
Year: 2018 DOI:https://doi.org/10.1116/1.5018800
Authors: Eiji Kobayashi, Mathieu Boccard, Quentin Jeangros, Nathan Rodkey, Daniel Vresilovic, Aicha Hessler-Wyser, Max Döbeli, Daniel Franta, Stefaan De Wolf, Monica Morales-Masis, Christophe Ballif
  • Amorphous gallium oxide
  • low-temperature PECVD
Room-Temperature Sputtered Nanocrystalline Nickel Oxide as Hole Transport Layer for p−i−n Perovskite Solar Cells
Article Year: 2018 DOI:https://doi.org/10.1021/acsaem.8b01263
Authors: Erkan Aydin, Joel Troughton, Michaele De Bastiani, Esma Uğur, Muhammad Sajjad, Areej Alzahrani, Marios Neophytou, Udo Schwingenschlögl, Frédéric Laquai, Derya Baran, Stefaan De Wolf
This study unveils the potential of the room-temperature processed sputtered-NiOx hole transport layers for the single junction perovskites and perovskite-based tandem solar cells, specifically which has rough bottom cells.
  • perovskite solar cells
  • room-temperature processing
  • sputtering
  • nickel oxide
  • conformal deposition
  • large area
  • p-i-n perovskite configuration
Interdigitated back contact silicon heterojunction solar cells featuring an interband tunnel junction enabling simplified processing
Year: 2018 DOI:https://doi.org/10.1016/j.solener.2018.01.066
Authors: B Paviet-Salomon, Andrea Tomasi, D Lachenal, N Badel, Gabriel Christmann, Loris Barraud, Antoine Descoeudres, Jonas Geissbühler, A Faes, Quentin Jeangros, Johannes Peter Seif, Sylvain Nicolay, B Strahm, Stefaan De Wolf, Christophe Ballif, Matthieu Despeisse
  • Passivating contact
  • interdigitated back contact
  • Tunnel junction
  • silicon solar cell
Device physics underlying silicon heterojunction and passivating‐contact solar cells: A topical review
Year: 2018 DOI:https://doi.org/10.1002/pip.2959
Authors: Raghu Vamsi Krishna Chavali, Stefaan De Wolf, Muhammad Ashraful Alam
  • amorphous semiconductors
  • current-voltage characteristics
  • heterojunctions
  • process control
  • silicon
  • modeling
  • simulation
  • passivating contacts
A Low Resistance Calcium/Reduced Titania Passivated Contact for High Efficiency Crystalline Silicon Solar Cells
Year: 2017 DOI:https://doi.org/10.1002/aenm.201602606
Authors: Thomas G Allen, James Bullock, Quentin Jeangros, Christian Samundsett, Yimao Wan, Jie Cui, Aïcha Hessler‐Wyser, Stefaan De Wolf, Ali Javey, Andres Cuevas
  • Titania
  • Passivated Contact
  • silicon solar cell
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