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Interface and Surface Chemistry Engineering in HgTe Quantum Dots for High-Performance Infrared Optoelectronic

Muhammad Sulaman^1,2, Tao Zhao¹, Ali Usman³

¹Optoelectronic Research Center, School of Science, Minzu University of China, Beijing, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)

|May 28, 2026

Summary

Mercury telluride (HgTe) colloidal quantum dots offer tunable infrared detection by controlling particle size. These nanomaterials show promise for advanced infrared optoelectronics and imaging applications.

Keywords:

CMOS integration HgTe quantum dots colloidal nanocrystals infrared photodetectors surface chemistry

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Area of Science:

Materials Science
Nanotechnology
Optoelectronics

Background:

Mercury telluride (HgTe) colloidal quantum dots (CQDs) are advanced nanomaterials for infrared detection.
Their tunable bandgap via size control enables coverage from near-infrared to terahertz wavelengths.
Robust charge transport characteristics are key for infrared applications.

Purpose of the Study:

To review fabrication methods, electronic band structures, and device integration of HgTe CQDs.
To analyze the impact of nanoparticle characteristics on optical and electrical properties.
To explore the application of HgTe CQDs in photodetection and imaging.

Main Methods:

Review of current literature on HgTe CQD fabrication techniques.
Analysis of quantum confinement effects on bandgap engineering.
Investigation of nanoparticle size, morphology, and surface functionalization impacts.
Exploration of device integration strategies for photodetection and imaging.

Main Results:

HgTe CQDs exhibit tunable bandgaps through quantum confinement, enabling precise control over light absorption and emission.
Nanoparticle dimensions, morphology, and surface modifications significantly influence optical and electrical properties.
HgTe CQDs have been successfully implemented in photodetection, field-effect transistors, and imaging arrays.

Conclusions:

HgTe CQDs are versatile materials for high-performance infrared optoelectronic devices.
Further research into design strategies and durability is needed for commercial viability.
These nanomaterials offer a pathway to cost-effective, efficient infrared solutions.