Tin‐Lead‐Selenide Nanocrystals for Sensitive Uncooled Mid‐Infrared Focal Plane Array Imager with Monolithic Readout Integration Article Swipe
Yifan Chen
,
Qi Wei
,
Shuixian Yang
,
Tao Zhang
,
Hongfei Chen
,
Zhihao Fu
,
Chao Lü
,
Zhengyong Liu
,
Yanxiong Wu
,
Jingshun Pan
,
Mingjie Li
,
Zhaohui Li
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1002/adma.202504225
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1002/adma.202504225
The mid‐infrared focal plane array (FPA) imager has developed over recent decades to become multifunctional, powerful, reliable, miniaturized, and cost‐effective. However, the complexity of the refrigerated packaging process (such as dewar flask) and traditional fabrication technology (such as flip‐chip) continues to contribute significantly to the high cost of industrial production. Here, a simple, low‐cost, and effective type of uncooled mid‐infrared FPA imager is reported through the monolithic integration of mid‐infrared Pb 1‐x Sn x Se nanocrystals (NCs) PIN heterojunction (PbS/Pb 1‐x Sn x Se/ZnO) photodetectors and glass‐based readout integrated circuits (ROICs). Sn‐doping in PbSe NCs not only weakens the internal photocarrier‐phonon coupling to reduce thermal noise but also optimizes the energy band structure of the heterojunction to enhance mid‐infrared performance. Finally, the PbS/Pb 0.86 Sn 0.14 Se/ZnO heterojunction photodetector demonstrates a dark current (2.7 x 10 −7 A mm −2 at −0.5 V), a detectivity of 7.46 × 10 9 Jones at a peak wavelength of 4.25 µm, air stability (retaining 96.7% performance at 300 K for 360 days) and the corresponding uncooled mid‐infrared FPA (64 × 64 pixels) achieves excellent thermal sensitivity of 133 mK. These results underscore the substantial potential applications of mid‐infrared FPA based on the heterojunction, including spectral imaging, gas leak detection, and chemical reagent identification.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1002/adma.202504225
- https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/adma.202504225
- OA Status
- bronze
- References
- 60
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4411731495
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4411731495Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1002/adma.202504225Digital Object Identifier
- Title
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Tin‐Lead‐Selenide Nanocrystals for Sensitive Uncooled Mid‐Infrared Focal Plane Array Imager with Monolithic Readout IntegrationWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2025Year of publication
- Publication date
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2025-06-27Full publication date if available
- Authors
-
Yifan Chen, Qi Wei, Shuixian Yang, Tao Zhang, Hongfei Chen, Zhihao Fu, Chao Lü, Zhengyong Liu, Yanxiong Wu, Jingshun Pan, Mingjie Li, Zhaohui LiList of authors in order
- Landing page
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https://doi.org/10.1002/adma.202504225Publisher landing page
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https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/adma.202504225Direct link to full text PDF
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YesWhether a free full text is available
- OA status
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bronzeOpen access status per OpenAlex
- OA URL
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https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/adma.202504225Direct OA link when available
- Concepts
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Materials science, Optoelectronics, Heterojunction, Infrared, Photodetector, Large format, Dark current, Specific detectivity, Quantum efficiency, Optics, PhysicsTop concepts (fields/topics) attached by OpenAlex
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0Total citation count in OpenAlex
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60Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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| citation_normalized_percentile.is_in_top_1_percent | False |
| citation_normalized_percentile.is_in_top_10_percent | False |