DataVXACS Energy LettersPaper
journal article·2020-11-13Open access

Broad Tunability of Carrier Effective Masses in Two-Dimensional Halide Perovskites

Mateusz Dyksik, Herman Duim, Xiangzhou Zhu, Zhuo Yang, Masaki Gen, Yoshimitsu Kohama, Sampson Adjokatse, Duncan K. Maude, Maria Antonietta Loi, David A. Egger, Michal Baranowski, Paulina Plochocka

ACS Energy Letters· Volume 5· Issue 11
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Source abstract

Abstract

The effective mass of charge carriers is a crucial parameter for the design of any optoelectronic device. The estimated values of the effective mass of 2D halide perovskites currently span a broad range, providing an unwelcome source of confusion in this promising material system. Here we highlight how the distortion imposed by the organic spacers, and orbital hybridization effects by the metal cation, govern the effective mass. As a result, the effective mass in 2D halide perovskites can be easily tailored over a wide range. To demonstrate this, we have directly measured the reduced effective mass of charge carriers in phenethylamine (PEA)-based 2D halide perovskites. Combining the experimental results with electronic band-structure calculations, we propose a scaling diagram for the effective mass value versus the distortion of the octahedra imposed by the organic cations.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · 2D Materials and Applications · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Laboratoire National des Champs Magnétiques Intenses, UPR 3228, CNRS-UGA-UPS-INSA, Grenoble and Toulouse, France

Department of Experimental Physics, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wroclaw, Poland

Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands

Department of Physics, Technical University of Munich, 85748 Garching, Germany

The Institute for Solid State Physics, The University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Chiba, Japan

Funding

Agence Nationale de la Recherche · Narodowe Centrum Nauki · Deutsche Forschungsgemeinschaft · Alexander von Humboldt-Stiftung · Seventh Framework Programme · Nederlandse Organisatie voor Wetenschappelijk Onderzoek · Narodowa Agencja Wymiany Akademickiej

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