Optical sensor and image sensor including graphene quantum dots
US11222953B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Oct 24, 2019 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | Oct 24, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/547
Abstract
Provided are an optical sensor including graphene quantum dots and an image sensor including an optical sensing layer. The optical sensor may include a graphene quantum dot layer that includes a plurality of first graphene quantum dots bonded to a first functional group and a plurality of second graphene quantum dots bonded to a second functional group that is different from the first functional group. An absorption wavelength band of the optical sensor may be adjusted based on types of functional groups bonded to the respective graphene quantum dots and/or sizes of the graphene quantum dots.
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