Search Results - "Koch , Norbert"

Molecular Electrical Doping of Organic Semiconductors: Fundamental Mechanisms and Emerging Dopant Design Rules by Salzmann, Ingo, Heimel, Georg, Oehzelt, Martin, Winkler, Stefanie, Koch, Norbert

“…Today’s information society depends on our ability to controllably dope inorganic semiconductors, such as silicon, thereby tuning their electrical properties…”
Get full text

Organic semiconductor density of states controls the energy level alignment at electrode interfaces by Oehzelt, Martin, Koch, Norbert, Heimel, Georg

“…Minimizing charge carrier injection barriers and extraction losses at interfaces between organic semiconductors and metallic electrodes is critical for…”
Get full text

Surface Termination Dependent Work Function and Electronic Properties of Ti3C2Tx MXene by Schultz, Thorsten, Frey, Nathan C., Hantanasirisakul, Kanit, Park, Soohyung, May, Steven J., Shenoy, Vivek B., Gogotsi, Yury, Koch, Norbert

“…MXenes, an emerging family of 2D transition metal carbides and nitrides, have shown promise in various applications, such as energy storage, electromagnetic…”
Get full text

Reduced Interface‐Mediated Recombination for High Open‐Circuit Voltages in CH3NH3PbI3 Solar Cells by Wolff, Christian M., Zu, Fengshuo, Paulke, Andreas, Toro, Lorena Perdigón, Koch, Norbert, Neher, Dieter

“…Perovskite solar cells with all‐organic transport layers exhibit efficiencies rivaling their counterparts that employ inorganic transport layers, while…”
Get full text

Design of Organic Semiconductors from Molecular Electrostatics by Heimel, Georg, Salzmann, Ingo, Duhm, Steffen, Koch, Norbert

“…Progress in the field of organic electronics depends on the synthesis of new π-conjugated molecules to further improve the performance of, for example, organic…”
Get full text

Doping Approaches for Organic Semiconductors by Scaccabarozzi, Alberto D, Basu, Aniruddha, Aniés, Filip, Liu, Jian, Zapata-Arteaga, Osnat, Warren, Ross, Firdaus, Yuliar, Nugraha, Mohamad Insan, Lin, Yuanbao, Campoy-Quiles, Mariano, Koch, Norbert, Müller, Christian, Tsetseris, Leonidas, Heeney, Martin, Anthopoulos, Thomas D

“…Electronic doping in organic materials has remained an elusive concept for several decades. It drew considerable attention in the early days in the quest for…”
Get full text

Charge-transfer crystallites as molecular electrical dopants by Méndez, Henry, Heimel, Georg, Winkler, Stefanie, Frisch, Johannes, Opitz, Andreas, Sauer, Katrein, Wegner, Berthold, Oehzelt, Martin, Röthel, Christian, Duhm, Steffen, Többens, Daniel, Koch, Norbert, Salzmann, Ingo

“…Ground-state integer charge transfer is commonly regarded as the basic mechanism of molecular electrical doping in both, conjugated polymers and oligomers…”
Get full text

Understanding Performance Limiting Interfacial Recombination in pin Perovskite Solar Cells by Warby, Jonathan, Zu, Fengshuo, Zeiske, Stefan, Gutierrez‐Partida, Emilio, Frohloff, Lennart, Kahmann, Simon, Frohna, Kyle, Mosconi, Edoardo, Radicchi, Eros, Lang, Felix, Shah, Sahil, Peña‐Camargo, Francisco, Hempel, Hannes, Unold, Thomas, Koch, Norbert, Armin, Ardalan, De Angelis, Filippo, Stranks, Samuel D., Neher, Dieter, Stolterfoht, Martin

“…Perovskite semiconductors are an attractive option to overcome the limitations of established silicon based photovoltaic (PV) technologies due to their…”
Get full text

Directional Charge Transport in Layered Two‐Dimensional Triazine‐Based Graphitic Carbon Nitride by Noda, Yu, Merschjann, Christoph, Tarábek, Ján, Amsalem, Patrick, Koch, Norbert, Bojdys, Michael J.

“…Triazine‐based graphitic carbon nitride (TGCN) is the most recent addition to the family of graphene‐type, two‐dimensional, and metal‐free materials. Although…”
Get full text

Perfluorinated Self-Assembled Monolayers Enhance the Stability and Efficiency of Inverted Perovskite Solar Cells by Wolff, Christian M, Canil, Laura, Rehermann, Carolin, Ngoc Linh, Nguyen, Zu, Fengshuo, Ralaiarisoa, Maryline, Caprioglio, Pietro, Fiedler, Lukas, Stolterfoht, Martin, Kogikoski, Sergio, Bald, Ilko, Koch, Norbert, Unger, Eva L, Dittrich, Thomas, Abate, Antonio, Neher, Dieter

“…Perovskite solar cells are among the most exciting photovoltaic systems as they combine low recombination losses, ease of fabrication, and high spectral…”
Get full text

Growth of Nb-Doped Monolayer WS2 by Liquid-Phase Precursor Mixing by Qin, Ziyu, Loh, Leyi, Wang, Junyong, Xu, Xiaomin, Zhang, Qi, Haas, Benedikt, Alvarez, Carlos, Okuno, Hanako, Yong, Justin Zhou, Schultz, Thorsten, Koch, Norbert, Dan, Jiadong, Pennycook, Stephen J, Zeng, Dawen, Bosman, Michel, Eda, Goki

“…Controlled substitutional doping of two-dimensional transition-metal dichalcogenides (TMDs) is of fundamental importance for their applications in electronics…”
Get full text

Interface Engineering of Solution-Processed Hybrid Organohalide Perovskite Solar Cells by Zhang, Shanshan, Stolterfoht, Martin, Armin, Ardalan, Lin, Qianqian, Zu, Fengshuo, Sobus, Jan, Jin, Hui, Koch, Norbert, Meredith, Paul, Burn, Paul L, Neher, Dieter

“…Engineering the interface between the perovskite absorber and the charge-transporting layers has become an important method for improving the charge extraction…”
Get full text

Chemical Vapor Deposition of N‑Doped Graphene and Carbon Films: The Role of Precursors and Gas Phase by Ito, Yoshikazu, Christodoulou, Christos, Nardi, Marco Vittorio, Koch, Norbert, Sachdev, Hermann, Müllen, Klaus

“…Thermally induced chemical vapor deposition (CVD) was used to study the formation of nitrogen-doped graphene and carbon films on copper from aliphatic…”
Get full text

Moderate doping leads to high performance of semiconductor/insulator polymer blend transistors by Lu, Guanghao, Blakesley, James, Himmelberger, Scott, Pingel, Patrick, Frisch, Johannes, Lieberwirth, Ingo, Salzmann, Ingo, Oehzelt, Martin, Di Pietro, Riccardo, Salleo, Alberto, Koch, Norbert, Neher, Dieter

“…Polymer transistors are being intensively developed for next-generation flexible electronics. Blends comprising a small amount of semiconducting polymer mixed…”
Get full text

Constructing the Electronic Structure of CH3NH3PbI3 and CH3NH3PbBr3 Perovskite Thin Films from Single-Crystal Band Structure Measurements by Zu, Fengshuo, Amsalem, Patrick, Egger, David A, Wang, Rongbin, Wolff, Christian M, Fang, Honghua, Loi, Maria Antonietta, Neher, Dieter, Kronik, Leeor, Duhm, Steffen, Koch, Norbert

“…Photovoltaic cells based on halide perovskites, possessing remarkably high power conversion efficiencies have been reported. To push the development of such…”
Get full text

Band-Bending in Organic Semiconductors: the Role of Alkali-Halide Interlayers by Wang, Haibo, Amsalem, Patrick, Heimel, Georg, Salzmann, Ingo, Koch, Norbert, Oehzelt, Martin

“…Band‐bending in organic semiconductors, occurring at metal/alkali‐halide cathodes in organic‐electronic devices, is experimentally revealed and…”
Get full text

Influence of Aggregation on the Performance of All-Polymer Solar Cells Containing Low-Bandgap Naphthalenediimide Copolymers by Schubert, Marcel, Dolfen, Daniel, Frisch, Johannes, Roland, Steffen, Steyrleuthner, Robert, Stiller, Burkhard, Chen, Zhihua, Scherf, Ullrich, Koch, Norbert, Facchetti, Antonio, Neher, Dieter

“…The authors present efficient all‐polymer solar cells comprising two different low‐bandgap naphthalenediimide (NDI)‐based copolymers as acceptors and…”
Get full text

Doping of Organic Semiconductors: Impact of Dopant Strength and Electronic Coupling by Méndez, Henry, Heimel, Georg, Opitz, Andreas, Sauer, Katrein, Barkowski, Patrick, Oehzelt, Martin, Soeda, Junshi, Okamoto, Toshihiro, Takeya, Jun, Arlin, Jean-Baptiste, Balandier, Jean-Yves, Geerts, Yves, Koch, Norbert, Salzmann, Ingo

“…Molecular doping: The standard model for molecular p‐doping of organic semiconductors (OSCs) assumes integer charge transfer between OSC and dopant. This is in…”
Get full text

Optically switchable transistor via energy-level phototuning in a bicomponent organic semiconductor by Orgiu, Emanuele, Crivillers, Núria, Herder, Martin, Grubert, Lutz, Pätzel, Michael, Frisch, Johannes, Pavlica, Egon, Duong, Duc T., Bratina, Gvido, Salleo, Alberto, Koch, Norbert, Hecht, Stefan, Samorì, Paolo

“…Organic semiconductors are suitable candidates for printable, flexible and large-area electronics. Alongside attaining an improved device performance, to…”
Get full text

Impact of White Light Illumination on the Electronic and Chemical Structures of Mixed Halide and Single Crystal Perovskites by Zu, Feng‐Shuo, Amsalem, Patrick, Salzmann, Ingo, Wang, Rong‐Bin, Ralaiarisoa, Maryline, Kowarik, Stefan, Duhm, Steffen, Koch, Norbert

“…This study investigates the effect of white light illumination on the electronic and chemical properties of mixed halide perovskite (CH3NH3PbI3−xClx) thin…”
Get full text