Infrared and Laser Engineering, Volume. 52, Issue 7, 20230377(2023)
640×512 HgTe colloidal quantum-dot mid-wave infrared focal plane array (invited)
Figures & Tables(9)
Fig. 1. TEM image and absorption spectra of HgTe quantum dots (CQDs) at room temperature
Fig. 2. Response spectra of HgTe CQDs-based photodetectors at room temperature and 80 K
Fig. 3. (a) Device structure diagram of trapping-mode photodetectors; (b) Energy band diagram of trapping-mode photodetectors
Fig. 4. Diagram of device signal extraction and Dewar test package
Fig. 5. (a) Response distribution diagram and response statistics histogram, (b) noise distribution diagram and noise statistics histogram, (c) detectivity distribution diagram and detectivity statistics histogram of photodetectors
Fig. 8. Thermal images of (a) 50 ℃ water and 200 ℃ soldering iron, (b) bottles with water at temperature of 50 ℃, 0 ℃ and 25 ℃ (from left to right); (c) human body and (d) human body with phones
Table 1. Device performance comparison between this work and the previous CQDs-based focus plane arrays
View tableView in ArticleTable 1. Device performance comparison between this work and the previous CQDs-based focus plane arrays
Ref. Materials Wavelength/μm Array scale Detectivity/Jones NETD/mK [ 9 ]PbS CQDs 1.8 256×256 2.3×109 - [ 10 ]PbS CQDs 0.3-2.0 388×288 1012 - [ 11 ]PbS CQDs 0.94 640×512 2.1×1012 - [ 17 ]HgTe CQDs 1.8 640×512 - - [ 12 ]HgTe CQDs 4.5 320×256 - 102- 199 This work HgTe CQDs 4.6 640×512 2×1010 51.26
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Yimei Tan, Shuo Zhang, Yuning Luo, Qun Hao, Menglu Chen, Yanfei Liu, Xin Tang. 640×512 HgTe colloidal quantum-dot mid-wave infrared focal plane array (invited)[J]. Infrared and Laser Engineering, 2023, 52(7): 20230377
Paper Information
Category: Invited paper
Received: Jun. 25, 2023
Accepted: --
Published Online: Aug. 16, 2023
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