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2021

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28.2%-efficient, outdoor-stable perovskite/silicon tandem solar cell
Article Year: 2021 DOI:https://doi.org/10.1016/j.joule.2021.11.003
Authors: Jiang Liu, Erkan Aydin, Jun Yin, Michele De Bastiani, Furkan H. Isikgor, Atteq ur Rehman, Emre Yengel, Esma Ugur, George T. Harrison, Mingcong Wang, Yajun Gao, Jafar Iqbal Khan, Maxime Babics, Thomas G. Allen, Anand S. Subbiah, Kaichen Zhu, Xiaopeng Zheng, wenbo Yan, Fuzong Xu, Michael F. Salvador, Osman M. Bakr, Thomas D. Anthopoulos, Mario Lanza, Omar F. Mohammed, Frédéric Laquai, Stefaan De Wolf
This study, which took place in Joule, demonstrates a simple additive strategy to suppress halide segregation. Here, we demonstrate 28.2%-efficient and stable perovskite/Si monolithic tandem solar cells
  • Perovskite/silicon
  • passivation
  • Phase stability
  • Outdoor
Life Cycle Assessment of Coated-Glass Recovery from Perovskite Solar Cells
Research Article Year: 2021 DOI:https://doi.org/10.1021/acssuschemeng.1c05029
Authors: Gonzalo Rodriguez-Garcia, Erkan Aydin, Stefaan De Wolf, Brett Carlson, Jon Kellar, Ilke Celik
This work was performed in collaboration with Ilke Celik from the South Dakota School of Mines and Technology.
  • Layers
  • Solvents
  • Amorphous materials
  • Recycling
  • Materials
Charge Carrier Recombination at Perovskite/Hole Transport Layer Interfaces Monitored by Time-Resolved Spectroscopy
Letter Year: 2021 DOI:https://doi.org/10.1021/acsenergylett.1c01931
Authors: Jafar I.Khan, Furkan H. Isikgor, Esma Ugur, Waseem Raja, George T. Harrison, Emre Yengel, Thomas D. Anthopoulos, Stefaan De Wolf, Frédéric Laquai
  • Oxides
  • interfaces
  • Layers
  • recombination
  • Perovskites
Linked Nickel Oxide/Perovskite Interface Passivation for High-Performance Textured Monolithic Tandem Solar Cell
Research Article Year: 2021 DOI:https://doi.org/10.1002/aenm.202101662
Authors: Shynggys Zhumagali, Furkan H. Isikgor, Partha Maity, Jun Yin, Esma Ugur, Michele De Bastiani, Anand S. Subbiah, Alessandro J. Mirabelli, Randi Azmi, George T. Harrison, Joel Troughton, Erkan Aydin, Jiang Liu, Thomas Allen, Atteq ur Rehman, Derya Baran, Omar F. Mohammed, Stefaan De Wolf
This study demonstrates double-side passivation of the nickel oxide/perovskite interface by incorporating N719 organometallic dye molecule, which enables 26.2% efficient textured monolithic p-i-n perovskite/silicon solar cells. This study was published in October's issue of Advanced Energy Materials.
  • nickel oxide
  • passivation
  • Perovskites
  • Solar cells
  • Tandems
Sputtered transparent electrodes for optoelectronic devices: Induced damage and mitigation strategies
Rewiew Year: 2021 DOI:https://doi.org/10.1016/j.matt.2021.09.021
Authors: Erkan Aydin, Cesur Altinkaya, Yury Smirnov, Muhammad A. Yaqin, Kassio P.S Zanoni, Abhyuday Paliwal, Yuliar Firdaus, Thomas G. Allen, Thomas D. Anthopoulos, Henk J. Bolink, Monica Morales-Masis, Stefaan De Wolf
  • sputtering
  • Bufer layers
  • Optoelectronic devices
  • Perovskite
  • Organic
  • silicon
  • Chalcopyrite
  • Chalcogenide
  • tandem solar cells
  • light-emitting  diodes
Electrode metallization for scaled perovskite/silicon tandem solar cells: Challenges and opportunities
Special issue article Year: 2021 DOI:https://doi.org/10.1002/pip.3499
Authors: Atteq ur Rehman, Emmanuel Van Kerschaver, Erkan Aydin, Waseem Raja, Thomas G. Allen, Stefaan De Wolf

Our perspective on the Electrode Metallization for industrial scale Perovskite/Silicon Tandems is published now in Progress in Photovoltaics. The focus of the study reveals the challenges and opportunities of scaled metallization in terms of grid design to mitigate the power losses, adopting state-of-the-art screen-printed metallization as well as cost-effective alternate metallization routes and their viability for industrial applications.

  • Cost analysis
  • Metal contacts
  • Metallization
  • Photovoltaics
  • Screen-printing
  • Perovskite/silicon tandem
Chemical Design Rules for Non-Fullerene Acceptors in Organic Solar Cells
Research Article Year: 2021 DOI:https://doi.org/10.1002/aenm.202102363
Authors: Anastasia Markina, Kun-Han Lin, Wenlan Liu, Carl Poelking, Yuliar Firdaus, Diego Rosas Villalva, Jafar I.Khan, Sri H. K. Paleti, George T. Harrison, Julien Gorenflot, Weimin Zhang, Stefaan De Wolf, Iain McCulloch, Thomas D. Anthopoulos, Derya Baran, Frédéric Laquai, Denis Andrienko
  • design rules
  • donor-acceptor interface
  • Non-fullerene acceptors
  • organic solar cells
All Set for Efficient and Reliable Perovskite/Silicon Tandem Photovoltaic Modules?
Perspective Year: 2021 DOI:https://doi.org/10.1002/solr.202100493
Authors: Michele De Bastiani, Maxime Babics, Erkan Aydin, Anand S. Subbiah, Lujia Xu, Stefaan De Wolf
  • Modules
  • Perovskites
  • Reliability
  • silicon
  • Tandems
3-D Modeling of Ultrathin Solar Cells with Nanostructured Dielectric Passivation: Case Study of Chalcogenide Solar Cells
Research Article Year: 2021 DOI:https://doi.org/10.1002/adts.202100191
Authors: Waseem Raja, Erkan Aydin, Thomas G. Allen, Stefaan De Wolf

Ultrathin solar cells can be a path forward to low-cost photovoltaics due to their reduced material consumption and shorter required deposition times. With excellent surface passivation, such devices may feature higher open-circuit voltages (VOC). However, their short-circuit current density (JSC) may be reduced due to decreased light absorption. This mandates implementation of efficient light-trapping structures. To design efficient ultrathin solar cells that combine surface-passivation and light-trapping features, accurate 3-D modeling is necessary. To this end, we have developed a novel 3-D opto-electrical finite-element model to analyze the performance of ultrathin solar cells. We apply our model to the case of ultrathin (< 500 nm) chalcogenide solar cells (copper indium gallium (di) selenide, CIGSe), rear-passivated with nanostructured Al2O3 to circumvent optical and electrical losses, resulting in an absolute PCE enhancement of 3.9%, compared to cells without passivation structure. 

  • 3-D optical electrical modeling
  • Light-trapping
  • nanostructured passivation
Toward Stable Monolithic Perovskite/Silicon Tandem Photovoltaics: A Six-Month Outdoor Performance Study in a Hot and Humid Climate
Letter Year: 2021 DOI:https://doi.org/10.1021/acsenergylett.1c01018
Authors: Michele De Bastiani, Emmanuel Van Kerschaver, Quentin Jeangros, Atteq ur Rehman, Erkan Aydin, Furkan H. Isikgor, Alessandro J. Mirabelli, Maxime Babics, Jiang Liu, Shynggys Zhumagali, Esma Ugur, George T. Harrison, Thomas G Allen, Bin Chen, Yi Hou, Semen Shikin, Edward H. Sargent, Christophe Ballif, Michael Salvador, Stefaan De Wolf

Perovskite solar cells are an emerging photovoltaic technology that is gathering huge attention in the solar community for its power conversion efficiency. Recently, the coupling between the perovskite and the silicon technologies in the tandem configuration boosted even further this power conversion efficiency, reaching record values for terrestrial applications. However, several degradation mechanisms in the perovskite are negatively affecting the stability of this technology, questioning if successful commercialization is possible. At KPVLAB we are pioneering the outdoor testing of perovskite/silicon tandem solar cells to investigate, understand, and improve their stability.

 

  • Degradation
  • Anions
  • Layers
  • Solar cells
  • Perovskites
Ligand-bridged charge extraction and enhanced quantum efficiency enable efficient n–i–p perovskite/silicon tandem solar cells
Article Year: 2021 DOI:https://doi.org/10.1039/D1EE01206A
Authors: Erkan Aydin, Jiang Liu, Esma Ugur, Randi Azmi, George T. Harrison, Yi Hou, Bin Chen, Shynggys Zhumagali, Michele De Bastiani, Mingcong Wang, Waseem Raja, Thomas G. Allen, Atteq ur Rehman, Anand S. Subbiah, Maxime Babics, Aslihan Babayigit, Furkan H. Isikgor, Kai Wang, Emmanuel Van Kerschaver, Leonidas Tsetseris, Edward H. Sargent, Frédéric Laquai, Stefaan De Wolf
This study demonstrates 27%-efficient perovskite/silicon tandem solar cells in n–i–p configuration by developing novel electron and hole selective contacts, which combine high broadband transparency with efficient charge extraction. This study took place in the June issue of Energy & Environmental Science.
  • Perovskite/silicon tandem solar cells
  • flipped polarity
  • n-i-p tandems
  • niobium oxide
  • vanadium oxide
  • spiro-TTB
  • textured interfaces
  • champion solar cells
  • C60-SAM
  • Two-dimensional passivation
  • enhanced stability
Concurrent cationic and anionic perovskite defect passivation enables 27.4% perovskite/silicon tandems with suppression of halide segregation
Article Year: 2021 DOI:https://doi.org/10.1016/j.joule.2021.05.013
Authors: Furkan H. Isikgor, Francesco Furlan, Jiang Liu, Esma Ugur, Mathan K. Eswaran, Anand S. Subbiah, Emre Yengel, Michele De Bastiani, George T. Harrison, Shynggys Zhumagali, Calvyn T. Howells, Erkan Aydin, Mingcong Wang, Nicola Gasparini, Thomas G. Allen, Atteq ur Rehman, Emmanuel Van Kerschaver, Derya Baran, Iain McCulloch, Thomas D. Anthopoulos, Udo Schwingenschlögl, Frédéric Laquai, Stefaan De Wolf

This study, which was recently published in Joule, reports a concurrent cationic and anionic perovskite defect passivation strategy using the phenformin hydrochloride molecule boosting the performance of monolithic perovskite/silicon tandem solar cells.

  • Perovskite
  • Solar cells
  • Tandems
  • passivation
  • silicon
  • Photovoltaics
  • phase segregation
  • Wide band-gap
  • Defects
Electron-Selective ‍Lithium Contacts for Crystalline Silicon Solar Cells
Research Article Year: 2021 DOI:https://doi.org/10.1002/admi.202100015
Authors: Jingxuan Kang, Xinbo Yang, Wenzhu Liu, Jiang Liu, Hang Xu, Thomas Allen, Stefaan De Wolf

This study, which takes place Advanced Materials Interfaces reports metallic lithium contact, applied to crystalline silicon solar cell and proved to be an excellent electron-selective, hole-blocking transport layer with an efficiency of 19%.

  • Crystalline silicon solar cells
  • Electron-selective contact materials
  • Heterostructures
  • Lithium
  • Photovoltaics
Impact of Acceptor Quadrupole Moment on Charge Generation and Recombination in Blends of IDT-Based Non-Fullerene Acceptors with PCE10 as Donor Polymer
Research Article Year: 2021 DOI:https://doi.org/10.1002/aenm.202100839
Authors: Jafar I.Khan, Maha A. Alamoudi, Neha Chaturvedi, Raja S. Ashraf, Mohammed N. Nabi, Anastasia Markina, Wenlan Liu, Top Archie Dela Peña, Weimin Zhang, Olivier Alévêque, George T. Harrison, Wejdan Alsufyani, Eric Levillain, Stefaan De Wolf, Denis Andrienko, Iain McCulloch, Frédéric Laquai
  • Charge generation
  • Non-fullerene acceptors
  • Organic photovoltaics
  • Quadrupole moment
  • ultrafast spectroscopy
Photon recycling in perovskite solar cells and its impact on device design
Review Year: 2021 DOI:https://doi.org/10.1515/nanoph-2021-0067
Authors: Waseem Raja, Michele De Bastiani, Thomas G Allen, Erkan Aydin, Arsalan Razzaq, Atteq ur Rehman, Esma Ugur, Aslihan Babayigit, Anand S. Subbiah, Furkan H. Isikgor, Stefaan De Wolf

The review which is published in Nanophotonics focuses on light-trapping schemes for efficient photon recycling in perovskite solar cells (PSCs).

  • Light-trapping
  • Perovskites
  • photon recycling
  • Photovoltaics
  • Solar cells
Efficient Hybrid Amorphous Silicon/Organic Tandem Solar Cells Enabled by Near-Infrared Absorbing Nonfullerene Acceptors
Research Article Year: 2021 DOI:https://doi.org/10.1002/aenm.202100166
Authors: Joel Troughton, Sebastian Neubert, Nicola Gasparini, Diego Rosas Villalva, Jules Bertrandie, Akmaral Seitkhan, Sri Harish Kumar Paleti, Anirudh Sharma, Michele De Bastiani, Erkan Aydin, Thomas D. Anthopoulos, Stefaan De Wolf, Rutger Schlatmann, Derya Baran
  • Tandem
  • Organic
  • Amorphous sillicon
  • Photovoltaics
  • Nonfullerene
Impact of Photoluminescence Reabsorption in Metal‐Halide Perovskite Solar Cells
Research Article Year: 2021 DOI:https://doi.org/10.1002/solr.202100029
Authors: Mingcong Wang, Kai Wang, Yajun Gao, Jafar I.Khan, Wenchao Yang, Stefaan De Wolf, Frédéric Laquai

An analytical solution of photoluminescence reabsorption (PLr) is used to determine the intrinsic radiative carrier recombination rate of metal-halide perovskite films. Simulation of its impact on the quasi-Fermi-level splitting (QFSL) reveals it is detrimental at high but advantageous at low nonradiative recombination rates. Importantly, neglecting PLr results in overestimation of the effective nonradiative recombination rate in perovskite solar cells.

  • nonradiative recombination
  • passivation strategies
  • perovskite solar cells
  • photon recycling
  • quantum efficiency
  • transient spectroscopy
Heat generation and mitigation in silicon solar cells and modules
Article Year: 2021 DOI:https://doi.org/10.1016/j.joule.2021.01.012
Authors: Lujia Xu, Whenzu Liu, Haohui Liu, Cangming Ke, Mingcong Wang, Chenlin Zhang, Erkan Aydin, Mohammed Al-Aswad, Konstantinos Kotsovos, Issam Gereige, Ahmed Al-Saggaf, Aqil Jamal, Xinbo Yang, Peng Wang, Frédéric Laquai, Thomas G. Allen, Stefaan De Wolf

This study, which came out in Joule, reveals that once the PCE approaches a practical upper limit, work on the control and mitigation of the module temperature can be equally or even more significant than costly marginal gains in PCE.

  • Temperature-dependent levelized cost of energy (LCOE)
  • Heating
  • photovoltaic
  • Module temperature
  • Equivalent ratio
  • Opto-electronically coupled thermal model
Tin Oxide Electron‐Selective Layers for Efficient, Stable, and Scalable Perovskite Solar Cells
Review Year: 2021 DOI:https://doi.org/10.1002/adma.202005504
Authors: Cesur Altinkaya, Erkan Aydin, Esma Ugur, Furkan H. Isikgor, Anand S. Subbiah, Michele De Bastiani, Jiang Liu, Aslihan Babayigit, Thomas G Allen, Frédéric Laquai, Abdullah Yildiz, Stefaan De Wolf

This review, which took place in Advanced Materials, provides a comprehensive overview of the tin-oxide electron-selective layered for champion perovskite solar cells.

  • Electron-selective layers
  • Low-temperature processing
  • perovskite solar cells
  • Tin oxide
Potassium Thiocyanate‐Assisted Enhancement of Slot‐Die‐Coated Perovskite Films for High‐Performance Solar Cells
Research Article Year: 2021 DOI:https://doi.org/10.1002/smsc.202000044
Authors: Fuzong Xu, Jiang Liu, Anand S. Subbiah, Whenzu Liu, Jingxuan Kang, George T. Harrison, Xinbo Yang, Furkan H. Isikgor, Erkan Aydin, Michele De Bastiani, Stefaan De Wolf
The MAPbI3 polycrystalline films with 25.15um charge carrier diffusion length and grain size of 11 um are achieved by slot-die method assisted by KSCN. Based on the films, the planar solar cells with all layers being deposited by scalable methods achieve an efficiency of 21.38%.
  • hysteresis of perovskite solar cells
  • perovskite grains
  • potassium thiocyanate additive
  • slot-die coating
Scalable Pulsed Laser Deposition of Transparent Rear Electrode for Perovskite Solar Cells
Full Paper Year: 2021 DOI:https://doi.org/10.1002/admt.202000856
Authors: Yury Smirnov, Laura Schmengler, Riemer Kuik, Pierre-Alexis Repecaud, Mehrdad Najafi, Dong Zhang, Mirjam Theelen, Erkan Aydin, Sjoerd Veenstra, Stefaan De Wolf, Monica Morales-Masis
This study, which takes place in Advanced Materials Technologies, demonstrates PLD‐grown IZRO transparent electrode on semi‐transparent perovskite solar cells.
  • magnetron sputtering
  • perovskite solar cells
  • pulsed laser deposition
  • transparent conducting oxides
Efficient bifacial monolithic perovskite/silicon tandem solar cells via bandgap engineering
Article Year: 2021 DOI:https://doi.org/10.1038/s41560-020-00756-8
Authors: Michele De Bastiani, Alessandro J. Mirabelli, Yi Hou, Fabrizio Gota, Erkan Aydin, Thomas G Allen, Joel Troughton, Anand S. Subbiah, Furkan H. Isikgor, Jiang Liu, Lujia Xu, Bin Chen, Emmanuel Van Kerschaver, Derya Baran, Beatrice Fraboni, Michael F. Salvador, Ulrich W. Paetzold, Edward H. Sargent, Stefaan De Wolf

In this publication, which took place in Nature Energy, we investigate the influence of scattered and reflected light from the ground (albedo) on the performance of the bifacial tandems with different perovskite bandgaps.

  • Materials for energy and catalysis
  • Solar cells
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