Here we merge both types into a hybrid photodetector device by integrating a colloidal quantum dot photodiode atop a graphene phototransistor. Our hybrid detector overcomes the limitations of a ...

Here, we report on the design, fabrication, and characterization of metasurface-enhanced photodetectors and photodiodes using colloidal quantum dots. We fabricate photoconductors optimized for the ...

Researchers have fabricated a new high-performance shortwave infrared (SWIR) image sensor based on non-toxic colloidal quantum dots ... Initially, the photodiode exhibited a low performance ...

The Los Alamos team has developed an elegant approach to synthesizing the colloidal ... a mercury sulfide interlayer at the core/shell interface, the team turned the quantum dots into highly ...

The proof-of-concept is a critical step toward mass-market infrared imaging with low-cost and non-toxic photodiodes. By detecting wavelengths ... “Replacing lead in colloidal quantum dots with a more ...

The team integrated an active colloidal quantum dot photodiode with a graphene phototransistor. By doing this, they were able to increase collection of charges in a thick QD film. It also led to ...

The results of this work have been recently published in Nature Communications ("Integrating an electrically active colloidal quantum dot photodiode with a graphene phototransistor"). This is a ...

Colloidal quantum dots tuned to SWIR show promise for such ... The first attempt was only moderately successful because the resulting photodiode didn't perform as well as expected in the SWIR ...

Invisible to our eyes, shortwave infrared (SWIR) light can enable unprecedented reliability, function and performance in high-volume, computer vision first applications in service robotics ...

SWIR sensor with lead-free quantum dot photodiodes Credit: imec The sensor successfully ... multifunctional image sensors with new functionalities." "Replacing lead in colloidal quantum dots with a ...