this post was submitted on 21 Jun 2025
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Perovskite-based image sensors promise higher sensitivity and resolution than silicon (techxplore.com)
submitted 1 day ago by NoSpotOfGround@lemmy.world to c/technology@lemmy.world
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They use stacked transparent color sensors, like Foveon camera sensors used to.

In numerous experiments, the researchers put the two prototypes, which differ in their readout technology, through their paces. Their results prove the advantages of perovskite: the sensors are more sensitive to light, more precise in color reproduction and can offer a significantly higher resolution than conventional silicon technology.

The fact that each pixel captures all the light also eliminates some of the artifacts of digital photography, such as demosaicing and the moiré effect.

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[–] Engywuck@lemm.ee 26 points 1 day ago* (last edited 1 day ago) (21 children)

I used to work on hybrid perovskite for solar cells, during my PhD, a few years ago. The problem with theses materials was their short lifetime (some thousands of hours of sun exposition) and chemical instability, which made them unsuitable for "real life" uses, back then (but suitable to get high impact-factor papers...). Is that still a problem?

[–] SonOfAntenora@lemmy.world 1 points 1 day ago

I found this paper that seems so address this question:

https://www.sciencedirect.com/science/article/abs/pii/S0026265X23005428 // perovskites demonstrate exceptional photodetection abilities characterized by high sensitivity and fast response times, rendering them ideal for the development of optical sensors for medical diagnostics and environmental monitoring. Additionally, they hold promise in gas sensing applications, detecting specific gases with high sensitivity and opening up a wide range of potential applications in industrial process control and environmental monitoring. Although perovskite materials have gained attention due to their unique properties, their stability in the presence of moisture or oxygen remains a significant challenge and is an active area of research. // this study provides a comprehensive evaluation of recent applications of perovskite materials-based sensors. Specifically, the focus is on chemiresistive gas sensors based on perovskite oxides and fluorescence/photoelectrochemical sensors based on halide perovskites

This is actually a really good paper, but i'm skimming it to find the references to the stability of peroskite...but i'm not good at doing this on a mobile device.

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