The DOI matches its Crossref record; 33 of the 33 references it cites were found in a registry or an index.
MoS2–HgTe Quantum Dot Hybrid Photodetectors beyond 2 µm
Open accessAbstract
Mercury telluride (HgTe) colloidal quantum dots (CQDs) have been developed as promising materials for the short and mid‐wave infrared photodetection applications because of their low cost, solution processing, and size tunable absorption in the short wave and mid‐infrared spectrum. However, the low mobility and poor photogain have limited the responsivity of HgTe CQD‐based photodetectors to only tens of mA W−1. Here, HgTe CQDs are integrated on a TiO 2 encapsulated MoS 2 transistor channel to form hybrid phototransistors with high responsivity of ≈10 6 A W−1, the highest reported to date for HgTe QDs. By operating the phototransistor in the depletion regime enabled by the gate modulated current of MoS 2, the noise current is significantly suppressed, leading to an experimentally measured specific detectivity D* of ≈10 12 Jones at a wavelength of 2 µm. This work demonstrates for the first time the potential of the hybrid 2D/QD detector technology in reaching out to wavelengths beyond 2 µm with compelling sensitivity.
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Cites
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Self-citationNear-infrared fluorescent type II quantum dots for sentinel lymph node mapping
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Self-citationUltrasensitive solution-cast quantum dot photodetectors
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Self-citationPbSe Nanocrystal Solids for n- and p-Channel Thin Film Field-Effect Transistors
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Cited by
Recent Progress and Future Prospects of 2D‐Based Photodetectors
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Colloidal quantum dot electronics
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Infrared Photodetectors Based on 2D Materials and Nanophotonics
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Metadata
- Authors
- Huo, N., Gupta, S., & Konstantatos, G.
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2017-03
- Volume
- 29
- Issue
- 17
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W2594626325
- Cited by
- 334
- References
- 33
- FWCI
- 15.24
- Type
- journal article
- Language
- en
- Open access
- green
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