| DOI | Resolve DOI: https://doi.org/10.1109/IFETC46817.2019.9073720 |
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| Author | Search for: Ouyang, Jianying1; Search for: Zhang, Yanguang2; Search for: Lu, Jianping2; Search for: Chu, Ta-Ya2; Search for: Graddage, Neil2; Search for: Malenfant, Patrick1; Search for: Tao, Ye2 |
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| Affiliation | - National Research Council of Canada. Security and Disruptive Technologies
- National Research Council of Canada. Advanced Electronics and Photonics
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| Format | Text, Article |
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| Conference | 2019 IEEE International Flexible Electronics Technology Conference (IFETC), Aug. 11-14, 2019, Vancouver, BC |
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| Physical description | 2 p. |
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| Subject | absorption; quantum dots; nanocrystals; silver; crystals; chalcogenides; photodetectors |
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| Abstract | Semiconducting nanocrystals (colloidal quantum dots, QDs) have superior optical properties and solution processibility. Silver selenide quantum dots are important nanomaterials with absorption peak extending from ~880nm to ~1200nm. Compared to the lead-based counterparts, Ag₂Se QDs are less developed and their application is less explored. This is in part due to the difficult control of their size and size distribution, resulting in broad absorption or even featureless absorption. We employed secondary phosphine to elevate the precursor reactivity and were able to well control the nucleation and growth. After a systematic investigation on a number of synthetic parameters, high quality Ag₂Se QDs have been synthesized with tunable size and narrow size distribution, exhibiting well-defined absorption peaks. The synthesis is scalable with high yield. The application of Ag₂Se QDs has been successfully demonstrated in photodetectors with photoresponse in near infrared region (>1000 nm). |
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| Publication date | 2019-08-11 |
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| Publisher | IEEE |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 6570c6a1-dc8c-4378-ba4b-d3148aec7f9c |
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| Record created | 2021-03-08 |
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| Record modified | 2021-03-15 |
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