Header menu link for other important links
Nanochannel-Assisted Perovskite Nanowires: From Growth Mechanisms to Photodetector Applications
Q. Zhou, J.G. Park, R. Nie, , D. Ha, J. Pan, S.I. Seok, T. Kim
Published in American Chemical Society
PMID: 29957925
Volume: 12
Issue: 8
Pages: 8406 - 8414
Growing interest in hybrid organic-inorganic lead halide perovskites has led to the development of various perovskite nanowires (NWs), which have potential use in a wide range of applications, including lasers, photodetectors, and light-emitting diodes (LEDs). However, existing nanofabrication approaches lack the ability to control the number, location, orientation, and properties of perovskite NWs. Their growth mechanism also remains elusive. Here, we demonstrate a micro/nanofluidic fabrication technique (MNFFT) enabling both precise control and in situ monitoring of the growth of perovskite NWs. The initial nucleation point and subsequent growth path of a methylammonium lead iodide-dimethylformamide (MAPbI3·DMF) NW array can be guided by a nanochannel. In situ UV-vis absorption spectra are measured in real time, permitting the study of the growth mechanism of the DMF-mediated crystallization of MAPbI3. As an example of an application of the MNFFT, we demonstrate a highly sensitive MAPbI3-NW-based photodetector on both solid and flexible substrates, showing the potential of the MNFFT for low-cost, large-scale, highly efficient, and flexible optoelectronic applications. © 2018 American Chemical Society.
About the journal
Published in American Chemical Society
Open Access
Impact factor