DataVXACS Applied Nano MaterialsPaper
journal article·2022-12-23

Self-Assembled δ-CsPbI3 Nanowires for Stable White Light Emission

Yanfeng Yin, Hui Cheng, Wenming Tian, Minhuan Wang, Zixi Yin, Shengye Jin, Jiming Bian

ACS Applied Nano Materials· Volume 5· Issue 12
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Source abstract

Abstract

An all-inorganic cesium lead halide perovskite shows great potential for high-performance optoelectronic devices due to its superior thermal stability compared to the organic–inorganic hybrid counterpart. Among the CsPbI3 family, orthorhombic phase (δ-) CsPbI3, in contrast to its cubic phase (α-) counterpart, has been believed to be a non-functional material because of its poor optoelectronic property. Herein, stable and white-light-emitting δ-CsPbI3 nanowires (NWs) were obtained from α-CsPbI3 quantum dots through self-assembled and phase transition processes after precisely controlled thermal annealing treatment. The optimized δ-CsPbI3 NWs exhibit a broad emission spectrum (∼410 to ∼800 nm) and an impressive photoluminescence quantum yield of 8%. Moreover, as a proof-of-concept application, the white-light-emitting diode (WLED) lamp bead with excellent operational stability are obtained by packing an InGaN-based violet chip (395 nm) and δ-CsPbI3 NWs. Our results give a perspective on δ-phase CsPbI3 for its applications as WLEDs.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsElectronic materialsMaterials processing

OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Optical properties and cooling technologies in crystalline materials

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

Affiliations

Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics, School of Microelectronics, Dalian University of Technology, 2 Ling Gong Road, Dalian 116024, China

State Key Laboratory of Molecular Reaction Dynamics and the Dynamic Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China

Funding

Ministry of Science and Technology of the People's Republic of China · Dalian Institute of Chemical Physics · Youth Innovation Promotion Association of the Chinese Academy of Sciences · Central University Basic Research Fund of China · Dalian Science and Technology Bureau · State Key Laboratory of Molecular Reaction Dynamics · National Natural Science Foundation of China · Chinese Academy of Sciences

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