Data · dataset · 2026
Lithium niobate waveguide-integrated Bi2Te3/graphene heterojunction photodetector
Listed in ScienceDB
We demonstrate an on-chip photodetector by integratinga graphene and topological insulator Bi2Te3 heterostruc-ture on a thin-film lithium niobate waveguide.
Description
Lithiumniobate on insulator (LNOI) waveguides are fabricated bythe photolithography-assisted chemical mechanical etchingmethod. The bismuth telluride (Bi2Te3) and graphene het-erostructure design provides enhanced photocurrent dueto the effective photocarrier generation.
The lithium nio-bate waveguide-integrated Bi2Te3/graphene heterojunctionpresents a high absorption coefficient of 2.1 dB/μm. TheBi2Te3/graphene heterojunction photodetector exhibits aresponsivity of 2.54 mA/W without external bias at a 1.55 μmwavelength, which is enhancement of sevenfold as comparedto the pure graphene-based photodetector. The photodetec-tor has a 3 dB bandwidth of over 4.7 GHz.
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This work providesa potentially viable method for a self-powered, high respon-sivity, and fast response of the photodetector integrated withthe LNOI photonic platform.
Links
Where it is published
- DOI doi.org/10.57760/sciencedb.35350 ↗
DOI / persistent id · from scidb cn
Catalogue records · 1
- OAI-PMH record scidb.cn/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=10.57760%2… ↗
metadata API · from scidb cn
Topics
- From keywords
- Earth & Environmental Science · Engineering · Humanities · Life Sciences · Social Science
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ScienceDB | 10.57760/sciencedb.35350 | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].local:field:earth-environmental | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:engineering | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:humanities | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:social-science | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| description | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/description |
| license_text | source · scidb cn | connector:scidb_cn@1.0.0 | |
| publication_date | source · scidb cn | connector:scidb_cn@1.0.0 | |
| title | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/title |