Stable Colloidal Quantum Dot Inks Enable Inkjet-Printed High-Sensitivity Infrared Photodetectors
| العنوان: | Stable Colloidal Quantum Dot Inks Enable Inkjet-Printed High-Sensitivity Infrared Photodetectors |
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| المؤلفون: | Min-Jae Choi, Sachin Kinge, Tapio Fabritius, F. Pelayo García de Arquer, Rafal Sliz, Edward H. Sargent, James Z. Fan, Marc Lejay, Sjoerd Hoogland |
| المصدر: | ACS Nano. 13:11988-11995 |
| بيانات النشر: | American Chemical Society (ACS), 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Materials science, business.industry, Infrared, General Engineering, Physics::Optics, General Physics and Astronomy, Photodetector, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Colloid, Quantum dot, Optoelectronics, General Materials Science, Colloidal quantum dots, Sensitivity (control systems), 0210 nano-technology, business |
| الوصف: | Colloidal quantum dots (CQDs) have recently gained attention as materials for manufacturing optoelectronic devices in view of their tunable light absorption and emission properties and compatibility with low-temperature thin-film manufacture. The realization of CQD inkjet-printed infrared photodetectors has thus far been hindered by incompatibility between the chemical processes that produce state-of-the-art CQD solution-exchanged inks and the requirements of ink formulations for inkjet materials processing. To achieve inkjet-printed CQD solids with a high degree of reproducibility, as well as with the needed morphological and optoelectronic characteristics, we sought to overcome the mismatch among these processing conditions. In this study, we design CQD inks by simultaneous evaluation of requirements regarding ink colloidal stability, jetting conditions, and film morphology for different dots and solvents. The new inks remain colloidally stable, achieved through a design that suppresses the reductant properties of amines on the dots' surface. After drop ejection from the nozzle, the quantum dot material is immobilized on the substrate surface due to the rapid evaporation of the low boiling point amine-based compound. Concurrently, the high boiling point solvent allows for the formation of a thin film of high uniformity, as is required for the fabrication of high-performance IR photodetectors. We fabricate inkjet-printed photodetectors exhibiting the highest specific detectivities reported to date (above 10 |
| تدمد: | 1936-086X 1936-0851 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96d36447d39a87e6ac7697a614218b64 https://doi.org/10.1021/acsnano.9b06125 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....96d36447d39a87e6ac7697a614218b64 |
| قاعدة البيانات: | OpenAIRE |
Find this issue from the American Chemical Society | تدمد: | 1936086X 19360851 |
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