Big congratulations to Amran, Eike and Steve et al. for demonstrating the world-record perovskite/silicon tandem solar cell with a stabilized efficiency of over 29%. This oustanding result was achieved based on a newly-designed carbazole-based self-assembled monolayer (SAM, Me-4PACz), which simultaneously enhanced the hole extraction speed, minimized the non-radiative recombination at the hole-selective interface, lowered the ideality factor of the perovskite cell, and reduced the phase-segregation under illumination. The paper has been published in Science (link to the paper).
Al-Ashouri, A., Köhnen, E., Li, B., Magomedov, A., Hempel, H., Caprioglio, P., Márquez, J. A., ..., Rech, B., Schlatmann, R., Topič, M., Korte, L., Abate, A., Stannowski, B., Neher, D., Stolterfoht, M., Unold, T., Getautis, V. & Albrecht, S. Monolithic perovskite/silicon tandem solar cell with over 29% efficiency by enhanced hole extraction. Science 370, 1300–1309 (2020).
Introducing the new postdoc team that joined over the past few months.
- Vincent coming from Koster's group (University of Groningen, NL) will be working on device simulations and electro-optical measurements.
- Felix coming from Strank's group (University of Cambridge, UK) will be working on working on perovskite for space application, radiation hardness and defects.
- Jonny coming from Snaith's group (University of Oxford, UK) will be working on perovskite for tandem solar cells and interface recombination.
Welcome to the group!
Big congratulations to Dr. Christian Wolff and Dr. Pietro Caprioglio for successfully defending their PhD theses at Uni Potsdam on last Friday and Monday! Two amazing people with two amazing talks combined with outstanding knowledge of perovskites and a significant contribution to the field led to 2x summa cum laude, the highest distinction in Germany. We are very proud of you - you did it!
We wish you both a successful start in your postdocs at EPFL Neuchâtel (Christian) and Oxford (Pietro) and thanks for the great times!
Pacho's paper on bromide-rich wide-gap perovskite solar cells has been published in ACS Energy Letters ( link to the paper )! Congratulations to Pacho!
Peña-Camargo, F., Caprioglio, P., Zu, F., Gutierrez-Partida, E., Wolff, CM, Brinkmann, K., Albrecht, S., Riedl, T., Koch, N., Neher, D. & Stolterfoht, M. Halide Segregation versus Interfacial Recombination in Bromide-Rich Wide-Gap Perovskite Solar Cells. ACS Energy Lett. 2728-2736 (2020). doi: 10.1021 / acsenergylett.0c01104
Shanshan's comparative study on the electro-optical properties of MAPI and triple cation has been recently published in ACS Applied Materials and Interfaces ( link to the paper )! Congratulations to former group member Shanshan!
Zhang, S., Shaw, PE, Zhang, G., Jin, H., Shao, M., Lin, H., Meredith, P., Burn, PL, Neher, D. & Stolterfoht, M. Defect / interface recombination limited quasi-Fermi level splitting and open-circuit voltage in mono- and triple cation perovskite solar cells. ACS Appl. Mater. Interfaces acsami.0c02960 (2020). doi: 10.1021 / acsami.0c02960
If you are interested to get hands on lab experience and work on an exciting new solar cell technology (yes, we are talking about perovskites), you are right here as we are looking for Bachelor and Master students to join our group. Contact Martin Stolterfoht (email@example.com). For further information, have a look at the Research Activities of the Perovskite Group. (June, 2020).
Our paper on identification of recombination losses in perovskite solar cells published in Nature Energy has been picked up by several science news webpages.