Direct Vapor-Liquid-Solid Synthesis of All-Inorganic Perovskite Nanowires for High-Performance Electronics and Optoelectronics.
basic_science · Level V
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- Record sourced from PubMed, PMID 31067402.
- Also identified by DOI 10.1021/acsnano.9b02379.
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Abstract
Controlled synthesis of lead halide perovskite (LHP) nanostructures not only benefits fundamental research but also offers promise for applications. Among many synthesis techniques, although catalytic vapor-liquid-solid (VLS) growth is recognized as an effective route to achieve high-quality nanostructures, until now, there is no detailed report on VLS grown LHP nanomaterials due to the emerging challenges in perovskite synthesis. Here, we develop a direct VLS growth for single-crystalline all-inorganic lead halide perovskite ( i.e., CsPbX<sub>3</sub>; X = Cl, Br, or I) nanowires (NWs). These NWs exhibit high-performance photodetection with the responsivity exceeding 4489 A/W and detectivity over 7.9 × 10<sup>12</sup> Jones toward the visible light regime. Field-effect transistors (FET) based on individual CsPbX<sub>3</sub> NWs are also fabricated, where they show the superior hole mobility of up to 3.05 cm<sup>2</sup>/(V s), higher than other all-inorganic LHP devices. This work provides important guidelines for the further improvement of these perovskite nanostructures for utilizations.