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organic semiconductors

Ordered Donor-Acceptor Complex Formation and Electron Transfer in Co-Deposited Films of Structurally Dissimilar Molecules

A. Opitz et al. | J. Phys. Chem. C 124 (2020)

The electrical and optoelectronic properties of organic semiconductor thin films can be tailored by mixing two molecular materials, e.g., by co-deposition. Possible resulting morphologies include phase separation or mixed crystals, which can form either solid solutions or ordered complexes, but it...


Position-locking of volatile reaction products by atmosphere and capping layers slows down photodecomposition of methylammonium lead triiodide perovskite

F. Zu et al. | RSC Adv. 10 (2020)

The remarkable progress of metal halide perovskites in photovoltaics has led to the power conversion efficiency approaching 26%. However, practical applications of perovskite-based solar cells are challenged by the stability issues, of which the most critical one is photo-induced degradation. Bare...

2D semiconductors

Demonstration of the key substrate-dependent charge transfer mechanisms between monolayer MoS2 and molecular dopants

S. Park et al. | Commun. Phys. 2 (2019)

Tuning the Fermi level (EF) in two-dimensional transition metal dichalcogenide (TMDC) semiconductors is crucial for optimizing their application in (opto-)electronic devices. Doping by molecular electron acceptors and donors has been suggested as a promising method to achieve...


New doctoral program “Ciencia y Tecnología de Materiales” at Pontificia Universidad Javeriana

Two speakers from Berlin (HU and HZB) at the inaugural symposium of the new doctoral program “Ciencia y Tecnología de…

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Graduate School „Advanced Materials“: First admission of members

This April, the Graduate School "Advanced Materials" (GS-AM) admitted 22 doctoral students as members, from HU Berlin, FU Berlin, TU…

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Opening Event Graduate School „Advanced Materials“

The opening Event of the Graduate School “Advanced Materials” will be in an electronic format at the end of March.…

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Graduate School "Advanced Materials"


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Integrative Research Institute for the Sciences

Helmholtz-Zentrum Berlin

Department of Physics

Humboldt-Universität zu Berlin