Rapid Capillary‐Assisted Solution Printing of Perovskite Nanowire Arrays Enables Scalable Production of Photodetectors. Issue 35 (17th June 2020)

• Record Type: Journal Article
• Authors: Pan, Shuang; Zou, Haiyang; Wang, Aurelia C.; Wang, Zewei; Yu, Jiwoo; Lan, Chuntao; Liu, Qiliang; Wang, Zhong Lin; Lian, Tianquan; Peng, Juan; Lin, Zhiqun
• Is Part Of: Angewandte Chemie international edition. Volume 59:Issue 35(2020)
• Page Start: 14942
• Page End: 14949
• Publication Date: 2020-06-17
• Subjects: nanochannels -- optoelectronic materials -- perovskite nanowires -- photodetectors; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.202004912
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: Despite recent progress in producing perovskite nanowires (NWs) for optoelectronics, it remains challenging to solution‐print an array of NWs with precisely controlled position and orientation. Herein, we report a robust capillary‐assisted solution printing (CASP) strategy to rapidly access aligned and highly crystalline perovskite NW arrays. The key to the CASP approach lies in the integration of capillary‐directed assembly through periodic nanochannels and solution printing through the programmably moving substrate to rapidly guide the deposition of perovskite NWs. The growth kinetics of perovskite NWs was closely examined by in situ optical microscopy. Intriguingly, the as‐printed perovskite NWs array exhibit excellent optical and optoelectronic properties and can be conveniently implemented for the scalable fabrication of photodetectors. Abstract : Down to the nanowire : A convenient, rapid, and robust capillary‐assisted solution printing (CASP) strategy, which combines nanochannel‐enabled, capillary‐guided assembly with moving substrate‐facilitated printing, yields a perovskite nanowire array with excellent optoelectronic properties for photodetectors.