Abstract
Broadband photodetection from visible to infrared spectrum region are of increasing importance in military and civilian applications. Recently, mercury telluride (HgTe) colloidal quantum dots(CQDs) have gradually become an attractive alternative for traditional narrow band gap semiconductors owing to their tunable spectral response. In this paper, HgTe QDs have been successfully synthesized. By simply spin-coating and ligand exchange treatment, the broadband photodetection based on HgTe CQDs up to near Infrared can be achieved.
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