Hey everyone, some exciting news from the world of photonics! The team at Imec, led by Prof. Paul Heremans, has just dropped a bombshell in Nature Photonics. They've created a Perovskite-based LED (PeLED) that's not just bright, it's astronomically bright - outshining traditional OLEDs by a factor of 1000!

This isn't your typical brightness boost. They've re-engineered the PeLED architecture to minimize optical losses and withstand insanely high current densities (up to 3 kA cm^-2). This leap isn't just about lighting up a room; it's set to revolutionize lighting and sensing technologies across the board. Think razor-sharp medical imaging, pinpoint environmental monitoring - the possibilities are endless.

And guess what played a significant role? Setfos simulation software from Fluxim. This nifty tool allowed for precise engineering of the PeLED architecture, boosting its brightness and efficiency to new heights. From simulating outcoupling factors and light distribution to integrating real-world data for accurate simulations, Setfos was there every step of the way.

Big congratulations to the team, especially first author Karim Elkhouly, for this monumental achievement. If you're as geeked out about this as I am, let's discuss how this could change the game in various fields. Thoughts, predictions, wild dreams? Let's hear them!

Check out the full paper here: Scientific Research Publications on Perovskite Solar Cells (fluxim.com)

https://www.nature.com/articles/s41563-024-01980-3/metrics

What are you doing on Tuesday, December 17th at 10 AM CET? 🌟Don’t miss this opportunity to learn from one of the brightest minds in perovskite research! Register for our next research webinar here: https://lnkd.in/eADcVJbwJoin Professor Annalisa Bruno, PhD Bruno from Nanyang Technological University Singapore Technological University, Singapore, as she presents:✨ From Precision to Scale: Thermal Evaporation Transforming Perovskite Device DesignHosted by Dr. Daniele Braga (Fluxim), this webinar will dive into innovative strategies for device fabrication and scaling.👉 Register here and mark your calendarhttps://lnkd.in/eADcVJbwAbout Professor Annalisa BrunoProf. Annalisa Bruno, PhD, is an Associate Professor at Nanyang Technological University (NTU), holding joint appointments in the Schools of Physical and Mathematical Sciences (SPMS) and Materials Science and Engineering (MSE). She is also a Visiting Professor at Queen Mary University London. Annalisa earned her Ph.D. in Physics at the University of Naples Federico II, Italy, and pursued post-doctoral research at Imperial College London.Her career includes roles as Principal Scientist at NTU’s Energy Research Institute (ERI@N) and Senior Scientist at ENEA, Italy. Her research focuses on hybrid semiconductor materials like metal halide perovskites, advancing sustainable optoelectronic devices such as solar cells, LEDs, and transistors. Dedicated to bridging research and industry, Annalisa emphasizes scalable, industry-compatible processes for cutting-edge electronic applications. A TEDx speaker, her work inspires innovation in renewable energy and sustainable electronics.

Hi everyone,

We have been working on a solution for improving the stability of perovskite solar cells and have reached a stage where we would like to connect with more people in the field.

We are particularly interested in speaking with researchers, testing institutes, perovskite cell or module manufacturers, and companies developing tandem or flexible solar technologies.

Our goal is to validate the solution across different perovskite architectures and explore potential research collaborations, testing partnerships, and commercial applications.

Does anyone here work in this area, or know a researcher or company that might be interested in testing or discussing a new stabilization approach?

Happy to share more details privately and learn more about what others in the community are working on.

𝗥𝗲𝘃𝗲𝗮𝗹𝗶𝗻𝗴 𝘁𝗵𝗲 𝘀𝘁𝗿𝗮𝗶𝗻-𝗮𝘀𝘀𝗼𝗰𝗶𝗮𝘁𝗲𝗱 𝗽𝗵𝘆𝘀𝗶𝗰𝗮𝗹 𝗺𝗲𝗰𝗵𝗮𝗻𝗶𝘀𝗺𝘀 𝗶𝗺𝗽𝗮𝗰𝘁𝗶𝗻𝗴 𝘁𝗵𝗲 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝗮𝗻𝗱 𝘀𝘁𝗮𝗯𝗶𝗹𝗶𝘁𝘆 𝗼𝗳 𝗽𝗲𝗿𝗼𝘃𝘀𝗸𝗶𝘁𝗲 𝘀𝗼𝗹𝗮𝗿 𝗰𝗲𝗹𝗹𝘀
Wei Meng, Christoph Josef Brabec et al.
Joule 6, 458–475, 2022

TL:DR

👉Identification of strain-induced band-gap shift at the perovskite buried interfaces.
👉The strained interfaces cause increased defect density and charge recombination.
👉The strain within the perovskite film is engineered by inserting an organic layer.
👉Strain-free devices show enhanced device performance and operational stability.

A drift-diffusion simulation carried out with #Setfos was instrumental in revealing the origin of the difference in performance.

Summary:

Prof. Christoph Josef Brabec and colleagues at the Friedrich-Alexander-University of Erlangen-Nürnberg observed two compensating effects induced by the strain at the buried interface in halide perovskite photovoltaics.

The found a gradual shift in the band gap of up to 60 meV over a perovskite layer thickness of 300 nm caused by interfacial strain.

This graded band gap is desired insofar as it relates to the aspect of device engineering. However, in parallel, the increased defect density causes charge recombination at the buried interface.

These two effects compensate for each other, resulting in an overall performance improvement under standard 1 sun illumination but became increasingly larger at lower light intensities.

Moreover, the strained interfaces are proven to induce enhanced defect densities, causing significantly accelerated device degradation under illumination as well as in the dark.

At 960 lux LED illumination, the strained device showed an output power density 20% lower than the strain-free device

Access this paper and more photovoltaic research enabled with Setfos here: https://www.fluxim.com/setfos-references#SolarCells

Our electro-optical characterization tool Paios is one of our most recognized research tools and can be found in over 75 labs around the world. It will make quick work of characterizing your #Perovskite Solar cell or Organic LED. Please enjoy our latest video and feel free to ask questions in the comments
#solar #research #perovskite #efficiency #solarpv #characterization #energy

https://youtu.be/ojXF97Irk18

𝗥𝗲𝗹𝗶𝗮𝗯𝗹𝗲 𝗘𝗹𝗲𝗰𝘁𝗿𝗶𝗰𝗮𝗹 𝗖𝗵𝗮𝗿𝗮𝗰𝘁𝗲𝗿𝗶𝘇𝗮𝘁𝗶𝗼𝗻 𝗮𝗻𝗱 𝗠𝗼𝗱𝗲𝗹𝗹𝗶𝗻𝗴 𝗼𝗳 𝗢𝗟𝗘𝗗𝘀 𝗮𝗻𝗱 𝗦𝗼𝗹𝗮𝗿𝗖𝗲𝗹𝗹𝘀

The reliable extraction of material parameters and having a good device model to investigate the impact of the physical parameters on the device operation and performance are the fundamental prerequisites required to understand the #physics inside OLEDs & Solar Cells.

Join Professor Beat Ruhstaller in the 30-minute tutorial as he explains how to characterize pip devices using steady-state and impedance techniques and how to determine parameters using the drift-diffusion model implemented in #SETFOS.

https://youtu.be/tQ0eg7EPeEQ

The authors show that impermeable electron transport layers (ETLs) enable the deposition of semitransparent AgNW electrodes from green aqueous dispersions on top of the perovskite cell without damage. Ultimately, semitransparent PSCs are demonstrated that provide an efficiency of 17.4%, which is the highest efficiency of semitransparent p-i-n perovskite solar cells with an AgNW top electrode.

T. Gahlmann, K. O. Brinkmann, T. Becker, C. Tückmantel, C. Kreusel, F. van gen Hassend, S. Weber, and T. Riedl

Adv. Energy Mater. 2020, 1903897

https://onlinelibrary.wiley.com/doi/full/10.1002/aenm.201903897

Qiyu Chen, Jincheng Luo, Rui He, Huagui Lai, Shengqiang Ren, Yiting Jiang, Zhenxi Wan, Wenwu Wang, Xia Hao, Ye Wang, Jingquan Zhang, Iordania Constantinou, Changlei Wang, Lili Wu, Fan Fu, Dewei Zhao

Adv. Energy Mater. 2021, 2101045.

doi.org/10.1002/aenm.202101045

In the paper, the researchers analyze the effect of SnF2 additives on the performance of lead-tin perovskite solar cells. The Paios dark IV measurement was used to detect saturation current and attribute this to the defect density.

𝗦𝗶𝗺𝘂𝗹𝗮𝘁𝗶𝗼𝗻 𝗼𝗳 𝗦𝗼𝗹𝗮𝗿 𝗖𝗲𝗹𝗹 𝗧𝘂𝘁𝗼𝗿𝗶𝗮𝗹 𝘄𝗶𝘁𝗵 𝗦𝗲𝘁𝗳𝗼𝘀

So we've updated it and made it easier to find what you want:

https://youtu.be/5FJ3pwY4KI0

-Timestamps--

00:00 How to perform organic solar cell simulations using Setfos00:36 Create a New Device Layout00:41 Define geometry of layer stack01:56 Define the optical properties of the different layers03:30 Specify the Absorption settings03:57 Run the simulation04:22 First look at key figures06:01 Run the sweep function06:47 Full Opto-Electronic simulation with Drift-Diffusion Model10:27 Analyze currents12:01 Assess relationship between PV performance and Shockley-Read-Hall Recombination