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Temperature Difference Triggering Controlled Growth of All‐Inorganic Perovskite Nanowire Arrays in Air
Author(s) -
Wang Yaguang,
Yasar Muhammad,
Luo Ziyi,
Zhou Shasha,
Yu Yiwei,
Li Huiqiao,
Yang Rui,
Wang Xiaoxia,
Pan Anlian,
Gan Lin,
Zhai Tianyou
Publication year - 2018
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201803010
Subject(s) - materials science , nanowire , fabrication , perovskite (structure) , nanotechnology , halide , epitaxy , crystallinity , phase (matter) , electronics , chemical engineering , chemistry , inorganic chemistry , layer (electronics) , medicine , alternative medicine , organic chemistry , pathology , engineering , composite material
Abstract All‐inorganic perovskites have attracted increasing worldwide interest due to its significantly improved stability in atmospheric environment compared to organic–inorganic hybrid perovskites, which renders it infinitely applicable in many fields such as electronics, optoelectronics, and energy storage. However, all‐inorganic perovskites have to confront the challenges from fabrication before their wide utilization in the aforementioned applications. Liquid‐phase synthesis holds the advantage of mass production and easy modulation of composition but with the deficiencies of relatively low crystallinity and disordered products. Interestingly, gas‐phase growth has complementary characteristics compared to the liquid‐phase method. In this work, it is proposed that a novel temperature difference triggers growth strategy to integrate the merits of the liquid‐ and gas‐phase methods, and the feasibility of this strategy via a simple lab‐use hot plate is demonstrated. High quality all‐inorganic perovskites, cesium lead halide (CsPbX 3 ) nanowire arrays, can be epitaxially grown as in a gas‐phase method, but at the same time, the composition of products can be easily modulated by predesigning the recipe of precursors as in the liquid‐phase method on a large scale. Notably, the as‐fabricated CsPbX 3 perovskite nanowire arrays demonstrate excellent stability and good optoelectronic properties in air. It is believed that this novel strategy can strikingly prompt the development of perovskites fabrication and applications in future.