DataVXChemistry of MaterialsPaper
journal article·2017-09-12

Inside Perovskites: Quantum Luminescence from Bulk Cs4PbBr6 Single Crystals

Michele De Bastiani, Ibrahim Dursun, Yuhai Zhang, Buthainah A. Alshankiti, Xiao-He Miao, Jun Yin, Emre Yengel, Erkki Alarousu, Bekir Turedi, Jawaher M. Almutlaq, Makhsud I. Saidaminov, Somak Mitra, Issam Gereige, Ahmed AlSaggaf, Yihan Zhu, Yu Han, Iman S. Roqan, Jean-Luc Bredas, Omar F. Mohammed, Osman M. Bakr

Chemistry of Materials· Volume 29· Issue 17
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Source abstract

Abstract

Zero-dimensional perovskite-related structures (0D-PRS) are a new frontier of perovskite-based materials. 0D-PRS, commonly synthesized in powder form, manifest distinctive optical properties such as strong photoluminescence (PL), narrow emission line width, and high exciton binding energy. These properties make 0D-PRS compelling for several types of optoelectronic applications, including phosphor screens and electroluminescent devices. However, it would not be possible to rationally design the chemistry and structure of these materials, without revealing the origins of their optical behavior, which is contradictory to the well-studied APbX 3 perovskites. In this work, we synthesize single crystals of Cs 4 PbBr 6 0D-PRS, and investigated the origins of their unique optical and electronic properties. The crystals exhibit a PL quantum yield higher than 40%, the highest reported for perovskite-based single crystals. Time-resolved and temperature dependent PL studies, supported by DFT calculations, and structural analysis, elucidate an emissive behavior reminiscent of a quantum confined structure rather than a typical bulk perovskite material.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Solid-state spectroscopy and crystallography · 2D Materials and Applications

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

Affiliations

KAUST Solar Center (KSC), Division of Physical Science and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia

Imaging and Characterization Core Lab, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia

Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia

Saudi Aramco Research & Development Center, Dhahran 31311, Kingdom of Saudi Arabia

Advanced Membranes and Porous Materials Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia

KAUST Catalysis Center (KCC), Division of Physical Science and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia

Funding

Saudi Aramco · King Abdullah University of Science and Technology

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