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High performance wide response GaAs based photo detector with nano texture on nanopillar arrays structure.
- Source :
- Microsystem Technologies; Aug2020, Vol. 26 Issue 8, p2651-2660, 10p
- Publication Year :
- 2020
-
Abstract
- Nanopillar arrays structure deployed over a top photodetector surface exhibits high light coupling efficiency which is attributed to their unique optical and structural properties. The paper presents a proposed GaAs material based periodic pyramidal cut nanopillar structure array model deployed over a 50 µm × 50 µm detector's surface area. From the geometric analysis of the proposed model structure a maximum 99.8% light absorption has been achieved. Enhanced detector's performance in terms of 0.75 A/W responsivity, as well as 56.8% external quantum efficiency for a narrow 0.5 µm depletion width, has also been demonstrated. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09467076
- Volume :
- 26
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- Microsystem Technologies
- Publication Type :
- Academic Journal
- Accession number :
- 144282396
- Full Text :
- https://doi.org/10.1007/s00542-020-04804-x