Hybrid Solar Cells

1. Gianluca Grimaldi, Bruno Ehrler
   AI et al.: Machines Are About to Change Scientific Publishing Forever
   ACS Energy Letters 8, 1, 878–880 (2023).
2. Loreta A Muscarella, Bruno Ehrler
   The influence of strain on phase stability in mixed-halide perovskites
   Joule 6, 2016 – 2031 (2022).
3. Bruno Ehrler
   Unleashing the power of materials science for a sustainable future
   Matter 5, 2386-2389 (2022).
4. Bruno Ehrler, Anita WY Ho-Baillie, Eline M Hutter, Jovana V Milić, Murad JY Tayebjee, Mark WB Wilson
   Scalable ways to break the efficiency limit of single-junction solar cells
   Appl. Phys. Lett. 120, 010402 (2022).
5. Bruno Ehrler, Nobuhiro Yanai, Lea Nienhaus
   Up-and down-conversion in molecules and materials
   J. Chem. Phys. 154, 070401 (2021).
6. Bruno Ehrler, Eline M Hutter, Joseph J Berry
   The Complicated Morality of Named Inventions
   ACS Energy Letters, 6, 2, 565–567 (2021).
7. Silvia M Ferro, Merlinde Wobben, Bruno Ehrler
   Rare-earth quantum cutting in metal halide perovskites – a review
   Materials Horizons, 8, 1072-1083 (2021).
8. Bruno Ehrler, Esther Alarcón-Lladó, Stefan W Tabernig, Tom Veeken, Erik C Garnett, Albert Polman
   Photovoltaics Reaching for the Shockley–Queisser Limit
   ACS Energy Letters 5 (9), 3029–3033 (2020).
9. EC Garnett, B Ehrler, A Polman, E Alarcon-Llado
   Photonics for Photovoltaics–advances and opportunities
   ACS Photonics (2020).
10. Eline M Hutter, Thomas Kirchartz, Bruno Ehrler, David Cahen, Elizabeth Von Hauff
    Pitfalls and prospects of optical spectroscopy to characterize perovskite-transport layer interfaces
    Applied Physics Letters 116, 100501 (2020).
11. Jovana V Milić, Bruno Ehrler, Concha Molina, Michael Saliba, Juan Bisquert
    Online Meetings in Times of Global Crisis: Toward Sustainable Conferencing
    ACS Energy Letters 5, 2024–2026 (2020).
12. Albert Polman, Mark Knight, Erik C Garnett, Bruno Ehrler, Wim C Sinke
    Photovoltaic materials: Present efficiencies and future challenges
    Science 352 (6283), aad4424 (2016).
13. Wilson, M. W. B.; Rao, A.; Ehrler, B.; Friend, R. H.
    Singlet Exciton Fission in Polycrystalline Pentacene: From Photophysics Toward Devices.
    Accounts of Chemical Research 46, 1330 (2013).

Perovskite semiconductors have recently shaken up the solar cell community because no other technology has ever seen such a fast increase in efficiency. We study the fundamental properties of these materials and devices thereof.

MSc Theses:

1. Linda van der Waart
   Quantum dot/Nanowire Hybrid Nanostructure for Solar Cell Applications
   University of Amsterdam (2016)
2. Maria Antonietta Mione
   t-butyl-Terrylene: novel singlet fission material for highly efficient solar cells |
   Utrecht University (2016)
3. Benjamin Daiber
   Indirect to direct bandgap transition in methylammonium lead halide perovskite
   University of Amsterdam (2016)
4. Maarten Mennes
   Investigation of singlet fission solar cells from perylene bis(phenethylimide)
   University of Amsterdam (2016)
5. Ruirt Bosma
   Size-Dependent Open-Circuit Voltage in Lead Sulfide Colloidal Quantum Dot Solar Cells
   University of Amsterdam (2017)
6. Lucie McGovern
   Managing triplet excitons in singlet fission sensitized pentacene solar cells
   Université Pierre et Marie Curie (2017)
7. Arnoud Jongeling
   Photon upconversion in an ionic liquid: A pressure study
   Wageningen University and Research Centre (2017)
8. Steven Verboom
   Nanomaterials for Triplet Exciton Transfer into Silicon
   Wageningen University and Research Centre (2017)
9. Stefan Tabernig
   Förster resonance energy transfer from PbS quantum dots to silicon: The missing link towards singlet fission solar cells
   University of Amsterdam (2018)
10. Roan van Leeuwen
    Simulating energy transfer of triplet excitons
    University of Amsterdam & VU University Amsterdam (2018)
11. Koen van den Hoven
    Harnessing singlet exciton fission to enhance silicon solar cells through direct charge-transfer
    University of Amsterdam (2018)
12. Joris Bodin
    Triplet Energy Transfer in Singlet Fission Silicon Solar Cells
    University of Amsterdam & VU University Amsterdam (2019)
13. Isabel Koschany
    Quantification of Ion Migration in Perovskite Solar Cells with Varying Grain Size
    University of Amsterdam (2020)
14. Emil Kensington
    Modelling Photovoltaic Silicon-based Luminescent Solar Concentrators with Photon Multiplying Luminophores
    University of Amsterdam & VU University Amsterdam (2020)
15. Marnix Ackermans
    Direct or Indirect? Unraveling the Bandgap Nature of Metal Halide Perovskites
    TU Delft (2020)
16. Mischa Hillenius
    Factors Impacting the Kramers-Kronig Compliance of Impedance Spectra from Perovskite Solar Cells and the Influence on Equivalent Circuit Modelling
    University of Amsterdam & VU University Amsterdam (2020)
17. Weiyi Ding
    Quantum Dots for Electron-beam Lithography
    University of Amsterdam (2020)
18. Menke Knol
    The Effect of Intermediate Band Trap Centres on the Charge-Carrier Dynamics in All-Inorganic Mixed-Halide Perovskite Thin Films
    TU Delft (2021)
19. Rens van Roosmalen
    Reduced Ion Migration in 2D/3D Perovskite Solar Cells
    University of Amsterdam & VU University Amsterdam (2021)
20. David Langhorst
    Light-Outcoupling Manipulation of Perovskite LEDs via Nano-Patterning of the Active Layer
    University of Amsterdam (2021)
21. Toon Maassen
    ‘Looking Inside’ a Perovskite
    University of Amsterdam & VU University Amsterdam (2022)
22. Oscar van de Water
    Perovskite Memristors for Energy Efficient Computing
    University of Amsterdam (2022)
23. Floris Blom
    Formation of Complex Perovskite Heterostructures
    University of Amsterdam & VU University Amsterdam (2022)
24. Thomas Wigmans
    Light Management in Perovskite Light-Emitting Diodes via Outcoupling Enhancement
    Utrecht University (2023)
25. Federico Ravazzolo
    Ionic-electronic interplay in perovskites
    University of Amsterdam (2023)
26. Jakub Zeid
    Fabrication of Nanoscale Artificial Synapses of Halide Perovskite
    Utrecht University (2023)
27. Roman Danser
    Utrecht University (2023)
28. Dimitris Sitaridis
    Fabrication and Electrical Characterization of Synaptic-Transistor Devices Made of Hybrid Metal Halide Perovskite
    Aristotle University of Thessaloniki (2024)
29. Fiona McPartlan
    A Study of the Role of Interfaces in the Degradation of Lead-Tin Perovskite Solar Cells
    University of Amsterdam (2024)

BSc Theses:

1. Ruby de Hart
   The efficiency and Shockley-Queisser limits of various solar panels under Dutch weather conditions
   Amsterdam University College (2016)
2. Talia Martz-Oberlaender
   A computational study of the effects of soiling on different solar modules in the Netherlands
   Amsterdam University College (2017)
3. Toon Maassen
   The effect of light diffuseness on the outdoor performance of thin film solar cells
   University of Amsterdam (2017)
4. Merlijn Kersten
   Outdoor solar cell performance – Improving a diffuseness measurement tool
   University of Amsterdam (2018)
5. Andrea Pollastri
   A Novel Multi-Directional Light Detector for Modelling the Cost-Efficiency Benefits of Bi-facial Solar Panels
   Amsterdam University College (2019)
6. Fabian Ecker
   Investigating Triplet Transfer in Singlet Fission – Low Bandgap Semiconductor Bilayers Using Magnetic Field Effects
   University of Konstanz (2019)
7. Kaspar Wachinger
   Understanding Seasonal Variations in Bi-facial Gain Predictions by the Light Ambience Detector in AMOLF’s Solar Array
   Amsterdam University College (2020)
8. Jouke Blum
   Utilising Machine Learning to Predict the Solar Spectrum From All Directions
   University of Groningen (2020)
9. Georg Klause
   Optical Properties of Perovskite Layers in Patterned Devices
   University of Konstanz (2022)
10. Sebastian Hein
    Transient Photoluminescence Measurement of Perovskite to Study Ion Migration
    University of Konstanz (2024)

Ion migration is one of the most unique features of metal halide peorvskites – it makes them dynamic and enables new functionality, but also destabilizes solar cells and LEDs. We use a range of methods to quantify and control ion migration.

Metal halide perovskites are suitable to build devices that have built-in memory – memristors. These devices can form artificial synapses and neurons that use very little energy for brain-inspired computation.