|  | 14:45 | TT 9.1 | Invited Talk:
            
            
              
                2D / 3D Heterostructures for Optoelectronis — •Max Lemme | 
        
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              |  | 15:15 | TT 9.2 | Optical properties of atomically thin MoS2 exposed to helium ions — •Anna Nolinder, Julian Klein, Agnieszka Kuc, Marcus Altzschner, Jakob Wierzbowski, Florian Sigger, Franz Kreupl, Thomas Heine, Jonathan Finley, Ursula Wurstbauer, Alexander Holleitner, and Michael Kaniber | 
        
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              |  | 15:30 | TT 9.3 | Coulomb Engineering of Excitonic Transitions in Transition Metal Dichalcogenides for New Non-Classical Light Sources — •Sven Borghardt, Jhih-Sian Tu, Tim Flatten, Frank Matthes, Daniel Bürgler, Detlev Grützmacher, and Beata Kardynal | 
        
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              |  | 15:45 | TT 9.4 | Exciton-trion competition and single photon emission in III-V- monolayer hybrid architectures — •Oliver Iff, Yu-Ming He, Nils Lundt, Sebastian Stoll, Vasilij Baumann, Sven Hoefling, and Christian Schneider | 
        
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            |  | 16:00 | TT 9.5 | The contribution has been moved to HL 15.11. | 
        
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            |  | 16:15 |  | Coffee Break | 
        
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              |  | 16:45 | TT 9.6 | Invited Talk:
            
            
              
                Excitons in colloidal 2D-CdSe nanocrystals — •Ulrike Woggon | 
        
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              |  | 17:15 | TT 9.7 | Controlled MoS2 deposition by metal-organic vapour phase epitaxy — Matthias Marx, Dominik Andrzejewski, Annika Grundmann, You-Ron Lin, Gerd Bacher, Holger Kalisch, Andrei Vescan, and •Michael Heuken | 
        
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              |  | 17:30 | TT 9.8 | Ion implantation of 2D transition metal dichalcogenides monolayers — •Jhih-Sian Tu, Sven Borghardt, Hans Hofsass, Ursel Bangert, Quentin Ramasse, Detlev Grützmacher, and Beata Kardynał | 
        
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              |  | 17:45 | TT 9.9 | synthesis of bismuth/reduced graphene oxide composites and their electrochemical properties for Na-ion batteries — •Benrong Hai, Yang Xu, Min Zhou, Liying Liang, and Yong Lei | 
        
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              |  | 18:00 | TT 9.10 | Optical properties of boron vacancies and boron vacancy complexes in hexagonal boron nitride — •Mažena Mackoit and Audrius Alkauskas | 
        
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              |  | 18:15 | TT 9.11 | The Influence of the Substrate Material on the Optical Properties of Tungsten-Diselendide Monolayers — Sina Lippert, •Lorenz Schneider, Dylan Renaud, Kyung Nam Kang, Obafunso Ajayi, Marc Halbich, Oday Abdulmunem, Xing Lin, Jan Kuhnert, Khaleel Hassoon, Saideh Edalati-Boostan, Young Duck Kim, Wolfram Heimbrodt, Eui-Hyeok Yang, James Hone, and Arash Rahimi-Iman | 
        
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