Abstract
Abstract
As an important member of cadmium-based halides, two-dimensional (2D) CdI2 has drawn widespread attention due to its excellent optoelectronic properties. However, the large-size growth of ultrathin CdI2 flakes remains a huge challenge. Here, a facile hot plate-assisted vapor deposition (HPVVD) method is developed to synthesize submillimeter ultrathin CdI2 flakes. The photodetectors based on CdI2 flakes exhibit extremely low dark current (0.53 pA), ultrafast response speed (<2 ms) and good stability. The proposed HPVVD method may open a new avenue to prepare 2D layered metal halides.
Subject
General Physics and Astronomy
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