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15 results on '"Schröder, Vincent R. F."'

1. An open-access database and analysis tool for perovskite solar cells based on the FAIR data principles

Author

Jacobsson, T. Jesper, Hultqvist, Adam, García-Fernández, Alberto, Anand, Aman, Al-Ashouri, Amran, Hagfeldt, Anders, Crovetto, Andrea, Abate, Antonio, Ricciardulli, Antonio Gaetano, Vijayan, Anuja, Kulkarni, Ashish, Anderson, Assaf Y., Darwich, Barbara Primera, Yang, Bowen, Coles, Brendan L., Perini, Carlo A. R., Rehermann, Carolin, Ramirez, Daniel, Fairen-Jimenez, David, Di Girolamo, Diego, Jia, Donglin, Avila, Elena, Juarez-Perez, Emilio J., Baumann, Fanny, Mathies, Florian, González, G. S. Anaya, Boschloo, Gerrit, Nasti, Giuseppe, Paramasivam, Gopinath, Martínez-Denegri, Guillermo, Näsström, Hampus, Michaels, Hannes, Köbler, Hans, Wu, Hua, Benesperi, Iacopo, Dar, M. Ibrahim, Bayrak Pehlivan, Ilknur, Gould, Isaac E., Vagott, Jacob N., Dagar, Janardan, Kettle, Jeff, Yang, Jie, Li, Jinzhao, Smith, Joel A., Pascual, Jorge, Jerónimo-Rendón, Jose J., Montoya, Juan Felipe, Correa-Baena, Juan-Pablo, Qiu, Junming, Wang, Junxin, Sveinbjörnsson, Kári, Hirselandt, Katrin, Dey, Krishanu, Frohna, Kyle, Mathies, Lena, Castriotta, Luigi A., Aldamasy, Mahmoud. H., Vasquez-Montoya, Manuel, Ruiz-Preciado, Marco A., Flatken, Marion A., Khenkin, Mark V., Grischek, Max, Kedia, Mayank, Saliba, Michael, Anaya, Miguel, Veldhoen, Misha, Arora, Neha, Shargaieva, Oleksandra, Maus, Oliver, Game, Onkar S., Yudilevich, Ori, Fassl, Paul, Zhou, Qisen, Betancur, Rafael, Munir, Rahim, Patidar, Rahul, Stranks, Samuel D., Alam, Shahidul, Kar, Shaoni, Unold, Thomas, Abzieher, Tobias, Edvinsson, Tomas, David, Tudur Wyn, Paetzold, Ulrich W., Zia, Waqas, Fu, Weifei, Zuo, Weiwei, Schröder, Vincent R. F., Tress, Wolfgang, Zhang, Xiaoliang, Chiang, Yu-Hsien, Iqbal, Zafar, Xie, Zhiqiang, and Unger, Eva

Published
2022
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5. Using Combinatorial Inkjet Printing for Synthesis and Deposition of Metal Halide Perovskites in Wavelength‐Selective Photodetectors

Author

Schröder, Vincent R. F., Hermerschmidt, Felix, Helper, Sabrina, Rehermann, Carolin, Ligorio, Giovanni, Näsström, Hampus, Unger, Eva, and List-Kratochvil, Emil J.W.

Subjects
halide variations, bandgap tunability, 540 Chemie und zugeordnete Wissenschaften, ddc:540, metal halide perovskites, combinatorial inkjet printing, wavelength-selective photodetectors
Abstract

Metal halide perovskites have received great attention in recent years, predominantly due to the high performance of perovskite solar cells. The versatility of the material, which allows the tunability of the bandgap, has led to its use in light-emitting diodes, photo, and X-ray detectors, among other optoelectronic device applications. Specifically in photodetectors, the tunability of the bandgap allows fabrication of spectrally selective devices. Utilizing a combinatorial inkjet printing approach, multiple perovskite compositions absorbing at specific wavelengths in a single printing step are fabricated. The drop-on-demand capabilities of inkjet printing enable the deposition of inks in a precise ratio to produce specific perovskite compositions in the printed thin film. By controlling the halide ratio in the compositions, a mixed halide gradient ranging from pure MAPbI3 via MAPbBr3 to MAPbCl3 is produced. The tunability in the absorption onset from 410 to 790 nm is demonstrated, covering the whole visible spectrum, with a precision of 8 nm steps for MAPb(BrxCl1−x)3 compositions. From this range of mixed halide perovskites, photodetectors which show spectral selectivity corresponding to the measured absorption onset are demonstrated, paving the way for use in a printed visible light spectrometer without the need for a dispersion element.

Published
2021

7. An open-access database and analysis tool for perovskite solar cells based on the FAIR data principles

Author

Jacobsson, T. Jesper, primary, Hultqvist, Adam, additional, García-Fernández, Alberto, additional, Anand, Aman, additional, Al-Ashouri, Amran, additional, Hagfeldt, Anders, additional, Crovetto, Andrea, additional, Abate, Antonio, additional, Ricciardulli, Antonio Gaetano, additional, Vijayan, Anuja, additional, Kulkarni, Ashish, additional, Anderson, Assaf Y., additional, Darwich, Barbara Primera, additional, Yang, Bowen, additional, Coles, Brendan L., additional, Perini, Carlo A. R., additional, Rehermann, Carolin, additional, Ramirez, Daniel, additional, Fairen-Jimenez, David, additional, Di Girolamo, Diego, additional, Jia, Donglin, additional, Avila, Elena, additional, Juarez-Perez, Emilio J., additional, Baumann, Fanny, additional, Mathies, Florian, additional, González, G. S. Anaya, additional, Boschloo, Gerrit, additional, Nasti, Giuseppe, additional, Paramasivam, Gopinath, additional, Martínez-Denegri, Guillermo, additional, Näsström, Hampus, additional, Michaels, Hannes, additional, Köbler, Hans, additional, Wu, Hua, additional, Benesperi, Iacopo, additional, Dar, M. Ibrahim, additional, Bayrak Pehlivan, Ilknur, additional, Gould, Isaac E., additional, Vagott, Jacob N., additional, Dagar, Janardan, additional, Kettle, Jeff, additional, Yang, Jie, additional, Li, Jinzhao, additional, Smith, Joel A., additional, Pascual, Jorge, additional, Jerónimo-Rendón, Jose J., additional, Montoya, Juan Felipe, additional, Correa-Baena, Juan-Pablo, additional, Qiu, Junming, additional, Wang, Junxin, additional, Sveinbjörnsson, Kári, additional, Hirselandt, Katrin, additional, Dey, Krishanu, additional, Frohna, Kyle, additional, Mathies, Lena, additional, Castriotta, Luigi A., additional, Aldamasy, Mahmoud. H., additional, Vasquez-Montoya, Manuel, additional, Ruiz-Preciado, Marco A., additional, Flatken, Marion A., additional, Khenkin, Mark V., additional, Grischek, Max, additional, Kedia, Mayank, additional, Saliba, Michael, additional, Anaya, Miguel, additional, Veldhoen, Misha, additional, Arora, Neha, additional, Shargaieva, Oleksandra, additional, Maus, Oliver, additional, Game, Onkar S., additional, Yudilevich, Ori, additional, Fassl, Paul, additional, Zhou, Qisen, additional, Betancur, Rafael, additional, Munir, Rahim, additional, Patidar, Rahul, additional, Stranks, Samuel D., additional, Alam, Shahidul, additional, Kar, Shaoni, additional, Unold, Thomas, additional, Abzieher, Tobias, additional, Edvinsson, Tomas, additional, David, Tudur Wyn, additional, Paetzold, Ulrich W., additional, Zia, Waqas, additional, Fu, Weifei, additional, Zuo, Weiwei, additional, Schröder, Vincent R. F., additional, Tress, Wolfgang, additional, Zhang, Xiaoliang, additional, Chiang, Yu-Hsien, additional, Iqbal, Zafar, additional, Xie, Zhiqiang, additional, and Unger, Eva, additional

Published
2021
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9. A guide to qualitative haze measurements demonstrated on inkjet-printed silver electrodes for flexible OLEDs

Author

Hermerschmidt, Felix, Hengge, Michael, Schröder, Vincent R. F., Hänsch, Paul, Livanov, Konstantin, Zamoshchik, Natalia, List-Kratochvil, Emil J.W., Hermerschmidt, Felix, Hengge, Michael, Schröder, Vincent R. F., Hänsch, Paul, Livanov, Konstantin, Zamoshchik, Natalia, and List-Kratochvil, Emil J.W.

Abstract

The search for alternative transparent electrodes to the commonly used indium tin oxide (ITO) in optoelectronic devices has led to solution-based approaches based on inkjet printing. As an additive manufacturing technique that allows drops to be positioned only where necessary, inkjet printing shows reduced waste of starting material compared to other methods such as spin coating. As a result, functional materials can be both coated and structured without the need for masks or lithographic pre-patterning of the substrate. For this contribution, we utilized a particle-free silver ink to produce a transparent electrode by inkjet printing. After printing, the silver ions were reduced to metallic silver by an argon plasma. The process takes place at low temperatures (ca. 40 – 50°C), making it suitable for use with flexible substrates, which are often temperature-sensitive. The printed silver layers show good electrical conductivity and optical transmittance, with a crystalline grain structure being formed and maintained during the metallization process. This structure forms a self-organized nanometer-size grid, whose structure allows light to pass through. Due to its nano-structured property, the haze of the electrode was investigated using a simple experimental setup based on a light source shining through the electrode and analyzing the size of the projected pattern. Such qualitative assessment can be a useful indication of the quality of the electrode and we provide details on how to replicate this setup. The final electrodes were implemented in solution-processed OLEDs, which showed bright luminance and overall low haze compared to ITO-based reference devices., Peer Reviewed

Published
2021

11. Using Combinatorial Inkjet Printing for Synthesis and Deposition of Metal Halide Perovskites in Wavelength‐Selective Photodetectors.

Author

Schröder, Vincent R. F., Hermerschmidt, Felix, Helper, Sabrina, Rehermann, Carolin, Ligorio, Giovanni, Näsström, Hampus, Unger, Eva L., and List-Kratochvil, Emil J. W.

Subjects
METAL halides, OPTOELECTRONIC devices, PHOTODETECTORS, PEROVSKITE, LIGHT emitting diodes, VISIBLE spectra, SOLAR cells
Abstract

Metal halide perovskites have received great attention in recent years, predominantly due to the high performance of perovskite solar cells. The versatility of the material, which allows the tunability of the bandgap, has led to its use in light‐emitting diodes, photo, and X‐ray detectors, among other optoelectronic device applications. Specifically in photodetectors, the tunability of the bandgap allows fabrication of spectrally selective devices. Utilizing a combinatorial inkjet printing approach, multiple perovskite compositions absorbing at specific wavelengths in a single printing step are fabricated. The drop‐on‐demand capabilities of inkjet printing enable the deposition of inks in a precise ratio to produce specific perovskite compositions in the printed thin film. By controlling the halide ratio in the compositions, a mixed halide gradient ranging from pure MAPbI3 via MAPbBr3 to MAPbCl3 is produced. The tunability in the absorption onset from 410 to 790 nm is demonstrated, covering the whole visible spectrum, with a precision of 8 nm steps for MAPb(BrxCl1−x)3 compositions. From this range of mixed halide perovskites, photodetectors which show spectral selectivity corresponding to the measured absorption onset are demonstrated, paving the way for use in a printed visible light spectrometer without the need for a dispersion element. [ABSTRACT FROM AUTHOR]

Published
2022
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15. Effects of Polar Substituents and Media on the Performance of N,N′‐Di‐tert‐Butoxycarbonyl‐Indigos as Photoswitches.

Author

Koeppe, Benjamin and Schröder, Vincent R. F.

Subjects
*POLAR solvents, *RESONANCE effect, *ISOMERS, *STRUCTURE-activity relationships, *DIARYLETHENE, *SOLVATOCHROMISM, *PRESS, *TOLUENE
Abstract

The N,N′‐di‐tert‐butoxycarbonylindigo parent compound and four symmetrically substituted derivatives alternatively containing methoxy and nitro substituents in positions 5 and 6 were synthesized. The photochromic behavior was studied in solvents ranging in polarity from toluene to acetonitrile/water mixtures and characterized in terms of trans and cis isomer spectra, conversion quantum yields and thermal half‐lives of the metastable cis isomers. The half‐lives at 21 °C varied from a few seconds (5‐nitro in polar solvents) to several days (6‐methoxy in apolar media) and can be described by the substituents' Hammett constants. Spectroscopic and photochemical parameters, in contrast, are governed largely by the substituents' resonance effects according to a scheme well known from thioindigos and these are termed here favorable and unfavorable resonance effects (FRE and URE, respectively). The title photoswitches show little propensity to quenching by protons and may be operated in aqueous media. [ABSTRACT FROM AUTHOR]

Published
2019
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