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Broadband enhancement of infrared absorption in microbolometers using Ag nanocrystals
- Title
- Broadband enhancement of infrared absorption in microbolometers using Ag nanocrystals
- Authors
- Hyun, Jerome K.; Ahn, Chi Won; Kim, Woo Choong; Kim, Tae Hyun; Hyun, Moon Seop; Lee, Won-Oh; Kim, Hee Yeoun; Park, Jae Hong
- Ewha Authors
- 현가담
- SCOPUS Author ID
- 현가담

- Issue Date
- 2015
- Journal Title
- APPLIED PHYSICS LETTERS
- ISSN
- 0003-6951
1077-3118
- Citation
- APPLIED PHYSICS LETTERS vol. 107, no. 25
- Publisher
- AMER INST PHYSICS
- Indexed
- SCI; SCIE; SCOPUS

- Document Type
- Article
- Abstract
- High performance microbolometers are widely sought for thermal imaging applications. In order to increase the performance limits of microbolometers, the responsivity of the device to broadband infrared (IR) radiation needs to be improved. In this work, we report a simple, quick, and cost-effective approach to modestly enhance the broadband IR response of the device by evaporating Ag nanocrystals onto the light entrance surface of the device. When irradiated with IR light, strong fields are built up within the gaps between adjacent Ag nanocrystals. These fields resistively generate heat in the nanocrystals and underlying substrate, which is transduced into an electrical signal via a resistive sensing element in the device. Through this method, we are able to enhance the IR absorption over a broadband spectrum and improve the responsivity of the device by similar to 11%. (C) 2015 AIP Publishing LLC.
- DOI
- 10.1063/1.4937900
- Appears in Collections:
- 자연과학대학 > 화학·나노과학전공 > Journal papers
- Files in This Item:
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