The rise of HgTe colloidal quantum dots for infrared optoelectronics

KA Sergeeva, H Zhang, AS Portniagin… - Advanced Functional …, 2024 - Wiley Online Library
Among materials produced as colloidal quantum dots (CQDs), HgTe has a special status
being the only material covering the whole infrared range from the visible to the THz (0.7 …

Silver telluride colloidal quantum dot infrared photodetectors and image sensors

Y Wang, L Peng, J Schreier, Y Bi, A Black, A Malla… - Nature …, 2024 - nature.com
Photodetectors that are sensitive in the shortwave-infrared (SWIR) range (1–2 µm) are of
great interest for applications such as machine vision, autonomous driving and three …

Obviating ligand exchange preserves the intact surface of HgTe colloidal quantum dots and enhances performance of short wavelength infrared photodetectors

KA Sergeeva, S Hu, AV Sokolova… - Advanced …, 2024 - Wiley Online Library
A large volume, scalable synthesis procedure of HgTe quantum dots (QDs) capped initially
with short‐chain conductive ligands ensures ligand exchange‐free and simple device …

Synergism in Binary Nanocrystals Enables Top-Illuminated HgTe Colloidal Quantum Dot Short-Wave Infrared Imager

B Wang, M Yuan, J Liu, X Zhang, J Liu, J Yang… - Nano Letters, 2024 - ACS Publications
Thanks to their tunable infrared absorption, solution processability, and low fabrication costs,
HgTe colloidal quantum dots (CQDs) are promising for optoelectronic devices. Despite …

Anisotropic Thermal Transport in Tunable Self-Assembled Nanocrystal Supercrystals

M Feldman, C Vernier, R Nag, JJ Barrios-Capuchino… - ACS …, 2024 - ACS Publications
Realizing tunable functional materials with built-in nanoscale heat flow directionality
represents a significant challenge that could advance thermal management strategies. Here …

Surface-Reconstructed InAs Colloidal Nanorod Quantum Dots for Efficient Deep-Shortwave Infrared Emission and Photodetection

T Sheikh, WJ Mir, A Alofi, M Skoroterski… - Journal of the …, 2024 - ACS Publications
Shortwave infrared (SWIR) light emitters and detectors are crucial in numerous applications.
Conventionally, SWIR devices rely on epitaxially grown narrow bandgap semiconductors …

In situ map** of the vectorial electric field within a nanocrystal-based focal plane array using photoemission microscopy

A Khalili, M Cavallo, E Bossavit, R Alchaar… - ACS Applied …, 2023 - ACS Publications
Within a few years, nanocrystal-based infrared devices have achieved significant progress
and advancements, including high-quality imaging systems. This raises the need to develop …

Infrared Imaging using thermally stable HgTe/CdS nanocrystals

H Zhang, Y Prado, R Alchaar, H Lehouelleur… - Nano Letters, 2024 - ACS Publications
Transferring nanocrystals (NCs) from the laboratory environment toward practical
applications has raised new challenges. HgTe appears as the most spectrally tunable …

Inside a nanocrystal-based photodiode using photoemission microscopy

M Cavallo, R Alchaar, E Bossavit, H Zhang, TH Dang… - Nanoscale, 2023 - pubs.rsc.org
As nanocrystal-based devices gain maturity, a comprehensive understanding of their
electronic structure is necessary for further optimization. Most spectroscopic techniques …

Narrow bandgap silver mercury telluride alloy semiconductor nanocrystal for self-powered midwavelength-infrared photodiode

H Song, SY Eom, G Kim, YS Jung, D Choi… - Communications …, 2024 - nature.com
Infrared colloidal quantum dots (CQDs) have been of interest due to their low-cost
fabrication and facile wavelength tunability for various infrared optoelectronic applications …