The latest papers to stay updated on Perovskite PVs
/There has been some very exciting work published recently in the field of Perovskite Solar Cells.
We are extremely happy to see not one but two pieces of research that use our latest solar cell measurement tool, Litos Lite. Congratulations to the group at Georgia Tech’s Energy Materials Lab led by Prof. Juan-Pablo Correa-Baena. And thanks to all of the groups who have published this year so far and have trusted in our research tools. It’s great to see our software and measurement tools in action and contributing to the development of Pero PVs.
In this month’s post you will find:
Latest Perovskite Solar Cell Research
Formation of a Secondary Phase in Thermally Evaporated MAPbI3 and Its Effects on Solar Cell Performance
Andrés-Felipe Castro-Méndez, Carlo A. R. Perini, Juanita Hidalgo, Daniel Ranke, Jacob N. Vagott, Yu An, Barry Lai, Yanqi Luo, Ruipeng Li, and Juan-Pablo Correa-Baena
ACS Applied Materials & Interfaces Article (2022)
Thermal evaporation is a promising deposition technique to scale up perovskite solar cells (PSCs) to large areas. The lack of understanding of the mechanisms that lead to high-quality evaporated methylammonium lead triiodide (MAPbI3) films gives rise to devices with efficiencies lower than those obtained by spin coating. In this paper, the researchers investigate the role of Sr and Ca-additives on the performance of CsFA-PbI solar cells.
Litos Lite was used to perform parallel JV characterizations for statistical analyses under 1 sun illumination.
Quantum-size-tuned heterostructures enable efficient and stable inverted perovskite solar cells.
Hao Chen, Sam Teale, Bin Chen, Edward H. Sargent, et al.
Nature Photonics 16, 352–358 (2022).
https://doi.org/10.1038/s41566-022-00985-1
Prof. Ted Sargent and colleagues demonstrated that with big organic molecules such as DMF, it is possible to obtain an inverted perovskite solar cell with a reduced-dimensional perovskite showing a certified efficiency of 23.91%. Without the bulky organics, it is not possible to obtain such efficient inverted pero-PVs with 2D/3D heterostructures due to electron blocking at the 2D/3D interface.
The fabricated devices are also stable. After 500h under ISOS-L3 aging, the encapsulated solar cell lost only 8% of the initial PCE.
This is an outstanding result congratulations to the research team at the University of Toronto.
The Intrinsic Photoluminescence Spectrum of Perovskite Films
Tom P. A. van der Pol, Kunal Datta, Martijn M. Wienk, and René A. J. Janssen
Adv. Optical Mater. (2022), 10, 2102557
doi.org/10.1002/adom.202102557
Photoluminescence (PL) helps you determine material properties and dynamic effects in perovskite devices. But it is not easy to interpret the PL spectra of perovskites and get to the intrinsic material properties. In this paper, the researchers show you how to do it.
The group of Prof. Rene Janssen at the Eindhoven University of Technology developed an optical model to quantify the intrinsic PL of a perovskite film and determine the influence of the extrinsic factors on the measured PL. The model is based on film thickness, refractive index, extinction coefficient, and carrier diffusion length as input parameters. The authors concluded that the largest mismatch between intrinsic and measured PL is observed for materials with a long diffusion length (>0.5um) and a layer thickness of >300nm.
The simulation software Setfos was instrumental in calculating an accurate emission spectrum to quantify the intrinsic PL for the perovskite. The simulation uses the real nk spectra of the materials and layer thickness as an input, which is the key to resolving the optical system.
The description you find in this paper can be used as a protocol to analyze your PL data on perovskite films.
Perovskite–organic tandem solar cells with indium oxide interconnect.
Brinkmann, K.O., Becker, T., Zimmermann, F. et al.
Nature 604, 280, (2022).
doi.org/10.1038/s41586-022-04455-0
In this Nature paper, Prof. Riedl and colleagues are reporting a new outstanding certified efficiency record of 23.1% with a two-terminal perovskite/organic solar cell.
Thanks to an ALD-deposited InOx interconnection layer, the current between the two subcells is perfectly matched at 14.1 mA/cm2. The high Voc of 2.15 V indicates an almost ideal interconnection between the two subcells. These devices are using an organic absorber for the narrow-gap subcell, which doesn't need the high-temperature processing of silicon and is more stable than the commonly used narrow-bandgap perovskites based on Sn.
With our software Setfos, they carried out optical simulations to identify the best wide-bandgap perovskite that matches the organic subcell.
New Episode of Fluxim’s Science Shorts
Why do mobile ions limit the performance of perovskite solar cells?
In this second episode, Dr. Antonio Cabas Vidani takes a look at the work of Henry Snaith Oxford PV and Martin Stolterfoht and demonstrates how mobile ions present in a perovskite film cause charge collection losses, which limit the maximum achievable current.
We’re happy to be supporting the upcoming conferences - will we see you there?
23rd International Conference on Photochemical Conversion and Storage of Solar Energy
Fluxim AG is happy to support, as a sponsor the 23rd International Conference on Photochemical Conversion and Storage of Solar Energy (IPS-23), which will be held in Lausanne SwissTechCenter, Switzerland from 2nd to 5th August 2022.
IPS-23 will welcome scientists, engineers, and students from all over the world to enrich their knowledge, interact to spark new ideas, and foster new collaborations and partnerships.
Fluxim’s Andreas Schiller will be there and presenting a poster entitled:
Overcoming the Limitations of the Transient Ion Drift Method for Extracting Material Parameters of Perovskite Solar Cells
The program will include a combination of the plenary, keynote, invited, contributing talks, and poster presentations in a meeting that will bring a broad spectrum of the community together to discuss the latest advances in energy conversion and storage research. The conference will have a scientific and social program over four full days. For those of you who can’t attend in person then the conference will also be broadcast online.
SIMOEP 2022 - INTERNATIONAL CONFERENCE ON SIMULATION OF ORGANIC ELECTRONICS AND PHOTOVOLTAICS
The 8th International Conference on Simulation of Organic Electronics and Photovoltaics (SimOEP) will be taking place in our home town of Winterthur, Switzerland from Wednesday 7th September to Friday 9th September 2022.
The SimOEP conference brings together modelling experts and device physicists from industry and academia in the field of organic and perovskite solar cells as well as OLEDs. This unique conference will focus on a comprehensive range of topics.
Please follow this link to register for SimOEP 2022.
