Colloidal Quantum-Dot Heterojunction Imagers for Room-Temperature Thermal Imaging

Ge Mu; Xiaolong Zheng; Yimei Tan; Yanfei Liu; Qun Hao; Kangkang Weng; Xin Tang

doi:10.1002/adma.202416877

Colloidal Quantum-Dot Heterojunction Imagers for Room-Temperature Thermal Imaging

Ge Mu, Xiaolong Zheng, Yimei Tan, Yanfei Liu, Qun Hao, Kangkang Weng^*, Xin Tang^*

^*此作品的通讯作者

光电学院

科研成果: 期刊稿件 › 文章 › 同行评审

摘要

Room-temperature operation or high-operation temperature (HOT) is essential for mid-wave infrared (MWIR) optoelectronics devices providing low-cost and compact systems for numerous applications. Colloidal quantum dots (CQDs) have emerged as a rising candidate to enable photodetectors to operate at HOT or room temperature and develop the next-generation infrared focal plane array (FPA) imagers. Here, band-engineered heterojunctions are demonstrated to suppress dark current with well-passivated mercury telluride (HgTe) CQDs enabling room-temperature MWIR imaging by single-pixel scanning and 640 × 512 FPA sensitive thermal imaging above 250 K. As a result, the room-temperature detectivity reaches as high as 1.26 × 10¹⁰ Jones, and the noise equivalent temperature difference (NETD) is as good as 25 mK up to 200 K.

源语言	英语
文章编号	2416877
期刊	Advanced Materials
卷	37
期	10
DOI	https://doi.org/10.1002/adma.202416877
出版状态	已出版 - 12 3月 2025

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10.1002/adma.202416877

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Mu, G., Zheng, X., Tan, Y., Liu, Y., Hao, Q., Weng, K., & Tang, X. (2025). Colloidal Quantum-Dot Heterojunction Imagers for Room-Temperature Thermal Imaging. Advanced Materials, 37(10), 文章 2416877. https://doi.org/10.1002/adma.202416877

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title = "Colloidal Quantum-Dot Heterojunction Imagers for Room-Temperature Thermal Imaging",

abstract = "Room-temperature operation or high-operation temperature (HOT) is essential for mid-wave infrared (MWIR) optoelectronics devices providing low-cost and compact systems for numerous applications. Colloidal quantum dots (CQDs) have emerged as a rising candidate to enable photodetectors to operate at HOT or room temperature and develop the next-generation infrared focal plane array (FPA) imagers. Here, band-engineered heterojunctions are demonstrated to suppress dark current with well-passivated mercury telluride (HgTe) CQDs enabling room-temperature MWIR imaging by single-pixel scanning and 640 × 512 FPA sensitive thermal imaging above 250 K. As a result, the room-temperature detectivity reaches as high as 1.26 × 1010 Jones, and the noise equivalent temperature difference (NETD) is as good as 25 mK up to 200 K.",

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AU - Mu, Ge

AU - Zheng, Xiaolong

AU - Tan, Yimei

AU - Liu, Yanfei

AU - Hao, Qun

AU - Weng, Kangkang

AU - Tang, Xin

PY - 2025/3/12

Y1 - 2025/3/12

N2 - Room-temperature operation or high-operation temperature (HOT) is essential for mid-wave infrared (MWIR) optoelectronics devices providing low-cost and compact systems for numerous applications. Colloidal quantum dots (CQDs) have emerged as a rising candidate to enable photodetectors to operate at HOT or room temperature and develop the next-generation infrared focal plane array (FPA) imagers. Here, band-engineered heterojunctions are demonstrated to suppress dark current with well-passivated mercury telluride (HgTe) CQDs enabling room-temperature MWIR imaging by single-pixel scanning and 640 × 512 FPA sensitive thermal imaging above 250 K. As a result, the room-temperature detectivity reaches as high as 1.26 × 1010 Jones, and the noise equivalent temperature difference (NETD) is as good as 25 mK up to 200 K.

AB - Room-temperature operation or high-operation temperature (HOT) is essential for mid-wave infrared (MWIR) optoelectronics devices providing low-cost and compact systems for numerous applications. Colloidal quantum dots (CQDs) have emerged as a rising candidate to enable photodetectors to operate at HOT or room temperature and develop the next-generation infrared focal plane array (FPA) imagers. Here, band-engineered heterojunctions are demonstrated to suppress dark current with well-passivated mercury telluride (HgTe) CQDs enabling room-temperature MWIR imaging by single-pixel scanning and 640 × 512 FPA sensitive thermal imaging above 250 K. As a result, the room-temperature detectivity reaches as high as 1.26 × 1010 Jones, and the noise equivalent temperature difference (NETD) is as good as 25 mK up to 200 K.

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Colloidal Quantum-Dot Heterojunction Imagers for Room-Temperature Thermal Imaging

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